Role of Hypoperfusion Intensity Ratio in Vessel Occlusions: A Review on Safety and Clinical Outcomes | American Journal of Neuroradiology

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    Role of Hypoperfusion Intensity Ratio in Vessel Occlusions: A Review on Safety and Clinical Outcomes | American Journal of Neuroradiology  
    



















    

































    
  
  




    
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      Review ArticleREVIEW ARTICLE
  
      
  
      Role of Hypoperfusion Intensity Ratio in Vessel Occlusions: A Review on Safety and Clinical Outcomes  
    	Sana Rehman, Arsalan Nadeem, Arbab Burhan Uddin Kasi, Ali Husnain, Summaiyya Waseem, Sohail Kumar, Syed Muhammad Owais, Nasreen Banu, Dhairya A. Lakhani, Hamza A. Salim, Risheng Xu, Vaibhav S. Vagal, Yasmin N. Aziz, Argye E. Hillis, Victor C. Urrutia, Rafael H. Llinas, Elisabeth B. Marsh, Richard Leigh, Hanzhang Lu, Adam A. Dmytriw, Adrien Guenego, Gregory W. Albers, Jeremy J. Heit, Tobias D. Faizy and Vivek S. Yedavalli
  
    	American Journal of Neuroradiology October 2024,  ajnr.A8557; DOI: https://doi.org/10.3174/ajnr.A8557 
  
  
  

Sana Rehman 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Arsalan Nadeem 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Arbab Burhan Uddin Kasi 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Ali Husnain 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Summaiyya Waseem 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Sohail Kumar 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Syed Muhammad Owais 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Nasreen Banu 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Dhairya A. Lakhani 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Hamza A. Salim 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Risheng Xu 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Vaibhav S. Vagal 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Yasmin N. Aziz 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Argye E. Hillis 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Victor C. Urrutia 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Rafael H. Llinas 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Elisabeth B. Marsh 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Richard Leigh 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Hanzhang Lu 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Adam A. Dmytriw 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Adrien Guenego 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Gregory W. Albers 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Jeremy J. Heit 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Tobias D. Faizy 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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Vivek S. Yedavalli 
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
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    	ajnr.A8557 
  
  
  

  

  
  

			
		
	
	
 	
	  
  
		
		
			
			  
  
      
  
  
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https://doi.org/10.3174/ajnr.A8557
  

  
  

  
      
  
  
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39477546
  

  
  

  
      
  
  
    
  

  
  

  
      
  
  
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American Journal of Neuroradiology
  

  
  

  
      
  
  
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Published online October 30, 2024.
  

  
  

  
      
  
  
    
  

  
  

  
      
  
  
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    Sana Rehman, 
Arsalan Nadeem, 
Arbab Burhan Uddin Kasi, 
Ali Husnain, 
Summaiyya Waseem, 
Sohail Kumar, 
Syed Muhammad Owais, 
Nasreen Banu, 
Dhairya A. Lakhani, 
Hamza A. Salim, 
Risheng Xu, 
Vaibhav S. Vagal, 
Yasmin N. Aziz, 
Argye E. Hillis, 
Victor C. Urrutia, 
Rafael H. Llinas, 
Elisabeth B. Marsh, 
Richard Leigh, 
Hanzhang Lu, 
Adam A. Dmytriw, 
Adrien Guenego, 
Gregory W. Albers, 
Jeremy J. Heit, 
Tobias D. Faizy and 
Vivek S. Yedavalli
From the Department of Radiology and Radiological Sciences (S.R., D.A.L., H.A.S., R.X., A.E.H., V.C.U., R.H.L., E.B.M., H.L., V.S.Y.), Johns Hopkins University, Baltimore, Maryland, U.S.; Department of Medicine (A.N.), Allama Iqbal Medical College, Lahore, Punjab, Pakistan; Mass General Brigham (A.B.U.K.), Massachusetts, U.S.; Division of Interventional Radiology, Department of Radiology (A.H.), Northwestern Memorial Hospital, Chicago, Illinois, U.S.; Dow University of Health Sciences (S.W.), Karachi, Pakistan; HMH JFK University Medical Center (S.K.), Edison, New Jersey, U.S.; University of Toledo (S.M.O.), Toledo, Ohio, U.S.; Shadan Institute of Medical Sciences (N.B.), Hyderabad, Telangana, India; Stony Brook University Renaissance School of Medicine (V.S.V), New York, U.S.; University of Cincinnati College of Medicine (Y.N.A.), Cincinnati, Ohio, U.S.; Department of Neurology (R.L.), Johns Hopkins Medicine, Baltimore, Maryland, U.S.; Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Boston, Massachusetts, U.S.; Department of Diagnostic and Interventional Neuroradiology (A.G.), Erasme University Hospital, Brussels, Belgium; Department of Neurology (G.W.A., J.J.H.), Stanford University, Stanford, California, U.S.; Department of Radiology (T.D.F.), Neuroendovascular Program, University Medical Center Münster, Munster, Germany.
Please address correspondence to Vivek S. Yedavalli, MD MS, Department of Radiology and Radiological Sciences, Johns Hopkins University, 600 North Wolfe street, Baltimore, Maryland 21287, U.S.; vyedava1{at}jhmi.edu.
  

  
  

  
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      Role of Hypoperfusion Intensity Ratio in Vessel Occlusions: A Review on Safety and Clinical Outcomes  
    	Sana Rehman, Arsalan Nadeem, Arbab Burhan Uddin Kasi, Ali Husnain, Summaiyya Waseem, Sohail Kumar, Syed Muhammad Owais, Nasreen Banu, Dhairya A. Lakhani, Hamza A. Salim, Risheng Xu, Vaibhav S. Vagal, Yasmin N. Aziz, Argye E. Hillis, Victor C. Urrutia, Rafael H. Llinas, Elisabeth B. Marsh, Richard Leigh, Hanzhang Lu, Adam A. Dmytriw, Adrien Guenego, Gregory W. Albers, Jeremy J. Heit, Tobias D. Faizy, Vivek S. Yedavalli
  
    	American Journal of Neuroradiology Oct 2024, ajnr.A8557; DOI: 10.3174/ajnr.A8557 
  
  
  

  
  
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      Role of Hypoperfusion Intensity Ratio in Vessel Occlusions: A Review on Safety and Clinical Outcomes  
    	Sana Rehman, Arsalan Nadeem, Arbab Burhan Uddin Kasi, Ali Husnain, Summaiyya Waseem, Sohail Kumar, Syed Muhammad Owais, Nasreen Banu, Dhairya A. Lakhani, Hamza A. Salim, Risheng Xu, Vaibhav S. Vagal, Yasmin N. Aziz, Argye E. Hillis, Victor C. Urrutia, Rafael H. Llinas, Elisabeth B. Marsh, Richard Leigh, Hanzhang Lu, Adam A. Dmytriw, Adrien Guenego, Gregory W. Albers, Jeremy J. Heit, Tobias D. Faizy, Vivek S. Yedavalli
  
    	American Journal of Neuroradiology Oct 2024, ajnr.A8557; DOI: 10.3174/ajnr.A8557 
  
  
  

  

  
  

  
      
  
  
    
  
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Print ISSN: 0195-6108 Online ISSN: 1936-959X