American Journal of Neuroradiology: 39 (2)

February 01, 2018; Volume 39,Issue 2

Perspectives

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Perspectives
Thomas A. Tomsick

American Journal of Neuroradiology February 2018, 39 (2) 207; DOI: https://doi.org/10.3174/ajnr.P0050

Review Article

Adult Brain

Open Access
Radiomics in Brain Tumor: Image Assessment, Quantitative Feature Descriptors, and Machine-Learning Approaches
M. Zhou, J. Scott, B. Chaudhury, L. Hall, D. Goldgof, K.W. Yeom, M. Iv, Y. Ou, J. Kalpathy-Cramer, S. Napel, R. Gillies, O. Gevaert and R. Gatenby

American Journal of Neuroradiology February 2018, 39 (2) 208-216; DOI: https://doi.org/10.3174/ajnr.A5391

Practice Perspectives

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John Nash and the Organization of Stroke Care
M. Goyal, A.T. Wilson, D. Mayank, N. Kamal, D.H. Robinson, D. Turkel-Parrella and J.A. Hirsch

American Journal of Neuroradiology February 2018, 39 (2) 217-218; DOI: https://doi.org/10.3174/ajnr.A5481

General Contents

Adult Brain

Open Access
MR Perfusion to Determine the Status of Collaterals in Patients with Acute Ischemic Stroke: A Look Beyond Time Maps
K. Nael, A. Doshi, R. De Leacy, J. Puig, M. Castellanos, J. Bederson, T.P. Naidich, J Mocco and M. Wintermark

American Journal of Neuroradiology February 2018, 39 (2) 219-225; DOI: https://doi.org/10.3174/ajnr.A5454
Adult Brain

Open Access
On the Reproducibility of Inversion Recovery Intravoxel Incoherent Motion Imaging in Cerebrovascular Disease
S.M. Wong, W.H. Backes, C.E. Zhang, J. Staals, R.J. van Oostenbrugge, C.R.L.P.N. Jeukens and J.F.A. Jansen

American Journal of Neuroradiology February 2018, 39 (2) 226-231; DOI: https://doi.org/10.3174/ajnr.A5474
Adult Brain

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The CT Swirl Sign Is Associated with Hematoma Expansion in Intracerebral Hemorrhage
D. Ng, L. Churilov, P. Mitchell, R. Dowling and B. Yan

American Journal of Neuroradiology February 2018, 39 (2) 232-237; DOI: https://doi.org/10.3174/ajnr.A5465
Adult Brain

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Dural Arteriovenous Fistulas: A Characteristic Pattern of Edema and Enhancement of the Medulla on MRI
A.Z. Copelan, A. Krishnan, H. Marin and R. Silbergleit

American Journal of Neuroradiology February 2018, 39 (2) 238-244; DOI: https://doi.org/10.3174/ajnr.A5460
EDITOR'S CHOICEAdult Brain

Open Access
White Matter Changes Related to Subconcussive Impact Frequency during a Single Season of High School Football
S.J. Kuzminski, M.D. Clark, M.A. Fraser, C.C. Haswell, R.A. Morey, C. Liu, K.R. Choudhury, K.M. Guskiewicz and J.R. Petrella

American Journal of Neuroradiology February 2018, 39 (2) 245-251; DOI: https://doi.org/10.3174/ajnr.A5489

Seventeen male athletes (mean age, 16 years) underwent MR imaging before and after the football season. Changes in fractional anisotropy across the white matter skeleton were assessed with Tract-Based Spatial Statistics and ROI analysis. The mean number of impacts over a 10-g threshold sustained was 414. Voxelwise analysis failed to show significant changes in fractional anisotropy across the season or a correlation with impact frequency, after correcting for multiple comparisons. ROI analysis showed significant decreases in fractional anisotropy in the fornix-stria terminalis and cingulum hippocampus, which were related to impact frequency. The authors conclude that subclinical neurotrauma related to participation in American football may result in white matter injury and that alterations in white matter tracts within the limbic system may be detectable after only 1 season of play at the high school level.
Adult Brain

Open Access
MR Imaging Characteristics Associate with Tumor-Associated Macrophages in Glioblastoma and Provide an Improved Signature for Survival Prognostication
J. Zhou, M.V. Reddy, B.K.J. Wilson, D.A. Blair, A. Taha, C.M. Frampton, R.A. Eiholzer, P.Y.C. Gan, F. Ziad, Z. Thotathil, S. Kirs, N.A. Hung, J.A. Royds and T.L. Slatter

American Journal of Neuroradiology February 2018, 39 (2) 252-259; DOI: https://doi.org/10.3174/ajnr.A5441
Adult Brain

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Diagnostic Accuracy of Centrally Restricted Diffusion in the Differentiation of Treatment-Related Necrosis from Tumor Recurrence in High-Grade Gliomas
N. Zakhari, M.S. Taccone, C. Torres, S. Chakraborty, J. Sinclair, J. Woulfe, G.H. Jansen and T.B. Nguyen

American Journal of Neuroradiology February 2018, 39 (2) 260-264; DOI: https://doi.org/10.3174/ajnr.A5485
Adult Brain

Open Access
Addition of Amide Proton Transfer Imaging to FDG-PET/CT Improves Diagnostic Accuracy in Glioma Grading: A Preliminary Study Using the Continuous Net Reclassification Analysis
A. Sakata, T. Okada, Y. Yamamoto, Y. Fushimi, T. Dodo, Y. Arakawa, Y. Mineharu, B. Schmitt, S. Miyamoto and K. Togashi

American Journal of Neuroradiology February 2018, 39 (2) 265-272; DOI: https://doi.org/10.3174/ajnr.A5503
Adult Brain

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Diffusion-Weighted Imaging of Brain Metastasis from Lung Cancer: Correlation of MRI Parameters with the Histologic Type and Gene Mutation Status
W.S. Jung, C.H. Park, C.-K. Hong, S.H. Suh and S.J. Ahn

American Journal of Neuroradiology February 2018, 39 (2) 273-279; DOI: https://doi.org/10.3174/ajnr.A5516
Adult Brain

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Diagnostic Accuracy of Amino Acid and FDG-PET in Differentiating Brain Metastasis Recurrence from Radionecrosis after Radiotherapy: A Systematic Review and Meta-Analysis
H. Li, L. Deng, H.X. Bai, J. Sun, Y. Cao, Y. Tao, L.J. States, M.D. Farwell, P. Zhang, B. Xiao and L. Yang

American Journal of Neuroradiology February 2018, 39 (2) 280-288; DOI: https://doi.org/10.3174/ajnr.A5472
EDITOR'S CHOICEAdult Brain

Open Access
Feasibility of Brain Atrophy Measurement in Clinical Routine without Prior Standardization of the MRI Protocol: Results from MS-MRIUS, a Longitudinal Observational, Multicenter Real-World Outcome Study in Patients with Relapsing-Remitting MS
R. Zivadinov, N. Bergsland, J.R. Korn, M.G. Dwyer, N. Khan, J. Medin, J.C. Price, B. Weinstock-Guttman and D. Silva on behalf of the MS-MRIUS Study Group

American Journal of Neuroradiology February 2018, 39 (2) 289-295; DOI: https://doi.org/10.3174/ajnr.A5442

Brain atrophy outcomes of 590 patients were analyzed by the percentage brain volume change measured by structural image evaluation with normalization of atrophy on 2D-T1WI and 3D-T1WI and the percentage lateral ventricle volume change, measured by VIENA on 2D-T1WI and 3D-T1WI and NeuroSTREAM on T2-FLAIR examinations. The median annualized percentage brain volume change was -0.31% on 2D-T1WI and -0.38% on 3D-T1WI. The median annualized percentage lateral ventricle volume change was 0.95% on 2D-T1WI, 1.47% on 3D-T1WI, and 0.90% on T2-FLAIR. The authors conclude that brain atrophy was more readily assessed by estimating the percentage lateral ventricle volume change on T2-FLAIR compared with the percentage brain volume change or percentage lateral ventricle volume change using 2D- or 3D-T1WI.
Adult Brain

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Improved Precision of Automatic Brain Volume Measurements in Patients with Clinically Isolated Syndrome and Multiple Sclerosis Using Edema Correction
J.B.M. Warntjes, A. Tisell, I. Håkansson, P. Lundberg and J. Ernerudh

American Journal of Neuroradiology February 2018, 39 (2) 296-302; DOI: https://doi.org/10.3174/ajnr.A5476
Adult Brain

Open Access
Combining Quantitative Susceptibility Mapping with Automatic Zero Reference (QSM0) and Myelin Water Fraction Imaging to Quantify Iron-Related Myelin Damage in Chronic Active MS Lesions
Y. Yao, T.D. Nguyen, S. Pandya, Y. Zhang, S. Hurtado Rúa, I. Kovanlikaya, A. Kuceyeski, Z. Liu, Y. Wang and S.A. Gauthier

American Journal of Neuroradiology February 2018, 39 (2) 303-310; DOI: https://doi.org/10.3174/ajnr.A5482
EDITOR'S CHOICEAdult Brain

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Noninvasive Assessment of Intracranial Pressure Status in Idiopathic Intracranial Hypertension Using Displacement Encoding with Stimulated Echoes (DENSE) MRI: A Prospective Patient Study with Contemporaneous CSF Pressure Correlation
A.M. Saindane, D. Qiu, J.N. Oshinski, N.J. Newman, V. Biousse, B.B. Bruce, J.F. Holbrook, B.M. Dale and X. Zhong

American Journal of Neuroradiology February 2018, 39 (2) 311-316; DOI: https://doi.org/10.3174/ajnr.A5486

Nine patients with suspected elevated intracranial pressure and 9 healthy control patients were included in this prospective study. Control patients underwent DENSE MR imaging through the midsagittal brain while patients underwent DENSE MR imaging followed immediately by lumbar puncture with opening pressure measurement, CSF removal, closing pressure measurement, and immediate repeat DENSE MR imaging. All patients had elevated opening pressure (median, 36.0 cm water), decreased by the removal of CSF to a median closing pressure of 17.0 cm water. Measured CSF pressure in patients pre= and post=lumbar puncture correlated significantly with pontine displacement. The authors conclude that DENSE MR imaging may providing a method to noninvasively assess intracranial pressure status in idiopathic intracranial hypertension.
Adult Brain

Open Access
Leukoaraiosis Attenuates Diagnostic Accuracy of Large-Vessel Occlusion Scales
Y. Mayasi, R.P. Goddeau, M. Moonis, B. Silver, A.H. Jun-O'Connell, A.S. Puri and N. Henninger

American Journal of Neuroradiology February 2018, 39 (2) 317-322; DOI: https://doi.org/10.3174/ajnr.A5473
Interventional

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The Role of Hemodynamics in Intracranial Bifurcation Arteries after Aneurysm Treatment with Flow-Diverter Stents
A.P. Narata, F.S. de Moura, I. Larrabide, C.M. Perrault, F. Patat, R. Bibi, S. Velasco, A.-C. Januel, C. Cognard, R. Chapot, A. Bouakaz, C.A. Sennoga and A. Marzo

American Journal of Neuroradiology February 2018, 39 (2) 323-330; DOI: https://doi.org/10.3174/ajnr.A5471
FELLOWS' JOURNAL CLUBInterventional

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Feasibility of Permanent Stenting with Solitaire FR as a Rescue Treatment for the Reperfusion of Acute Intracranial Artery Occlusion
H.G. Woo, L. Sunwoo, C. Jung, B.J. Kim, M.-K. Han, H.-J. Bae, Y.J. Bae, B.S. Choi and J.H. Kim

American Journal of Neuroradiology February 2018, 39 (2) 331-336; DOI: https://doi.org/10.3174/ajnr.A5477

From January 2011 through January 2016, among 2979 patients with acute ischemic stroke, the authors identified 27 patients who underwent permanent stent placement (13 patients with the Solitaire FR and 14 patients with other self-expanding stents). The postprocedural modified TICI grade and angiographic and clinical outcomes were assessed. Stent placement was successful in all cases. Modified TICI 2b=3 reperfusion was noted in 84.6% of the Solitaire group and in 78.6% of the other stent group. They conclude that permanent stent placement with the Solitaire FR compared with other self-expanding stents appears to be feasible and safe as a rescue tool for refractory intra-arterial therapy.
Interventional

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Better Than Nothing: A Rational Approach for Minimizing the Impact of Outflow Strategy on Cerebrovascular Simulations
C. Chnafa, O. Brina, V.M. Pereira and D.A. Steinman

American Journal of Neuroradiology February 2018, 39 (2) 337-343; DOI: https://doi.org/10.3174/ajnr.A5484
Head & Neck

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Intranasal Esthesioneuroblastoma: CT Patterns Aid in Preventing Routine Nasal Polypectomy
M.E. Peckham, R.H. Wiggins, R.R. Orlandi, Y. Anzai, W. Finke and H.R. Harnsberger

American Journal of Neuroradiology February 2018, 39 (2) 344-349; DOI: https://doi.org/10.3174/ajnr.A5464
FELLOWS' JOURNAL CLUBHead & Neck

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Lymphographic-Like Technique for the Treatment of Microcystic Lymphatic Malformation Components of <3 mm
V. Da Ros, M. Iacobucci, F. Puccinelli, L. Spelle and G. Saliou

American Journal of Neuroradiology February 2018, 39 (2) 350-354; DOI: https://doi.org/10.3174/ajnr.A5449

A retrospective analysis of a prospectively collected lymphatic malformation data base was performed that included 16 patients (5 males, 11 females; mean age, 15 years; range, 1=47 years). Patients with at least 1 microcystic lymphatic malformation component demonstrated on MR imaging treated by lymphographic-like technique bleomycin infusion were included in the study. Patient interviews and MR imaging were performed to assess subjective and objective clinical improvement (microcystic lymphatic malformation size decrease of >30%). The authors observed no major and 3 minor complications: 1 eyelid infection, 1 case of severe postprocedural nausea and vomiting, and 1 case of skin discoloration. MR imaging objective improvement was observed in 5/16 (31%) patients; overall improvement of clinical symptoms was obtained in 93% of treated patients. Bleomycin lymphographic-like technique for microcystic lymphatic malformations was safe and feasible with objective improvement in about one-third of patients.
Head & Neck

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Semiautomated Middle Ear Volume Measurement as a Predictor of Postsurgical Outcomes for Congenital Aural Atresia
S.J. Kabadi, D.S. Ruhl, S. Mukherjee and B.W. Kesser

American Journal of Neuroradiology February 2018, 39 (2) 355-361; DOI: https://doi.org/10.3174/ajnr.A5475
Head & Neck

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Optimal Fat Suppression in Head and Neck MRI: Comparison of Multipoint Dixon with 2 Different Fat-Suppression Techniques, Spectral Presaturation and Inversion Recovery, and STIR
S. Gaddikeri, M. Mossa-Basha, J.B. Andre, D.S. Hippe and Y. Anzai

American Journal of Neuroradiology February 2018, 39 (2) 362-368; DOI: https://doi.org/10.3174/ajnr.A5483
Pediatrics

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Optic Nerve Measurement on MRI in the Pediatric Population: Normative Values and Correlations
C.E. Al-Haddad, M.G. Sebaaly, R.N. Tutunji, C.J. Mehanna, S.R. Saaybi, A.M. Khamis and R.G. Hourani

American Journal of Neuroradiology February 2018, 39 (2) 369-374; DOI: https://doi.org/10.3174/ajnr.A5456
Pediatrics

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Measuring Cerebral and Cerebellar Glutathione in Children Using ¹H MEGA-PRESS MRS
F. Raschke, R. Noeske, R.A Dineen and D.P. Auer

American Journal of Neuroradiology February 2018, 39 (2) 375-379; DOI: https://doi.org/10.3174/ajnr.A5457
Pediatrics

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Temporal Lobe Malformations in Achondroplasia: Expanding the Brain Imaging Phenotype Associated with FGFR3-Related Skeletal Dysplasias
S.A. Manikkam, K. Chetcuti, K.B. Howell, R. Savarirayan, A.M. Fink and S.A. Mandelstam

American Journal of Neuroradiology February 2018, 39 (2) 380-384; DOI: https://doi.org/10.3174/ajnr.A5468
Spine

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Systematic Radiation Dose Reduction in Cervical Spine CT of Human Cadaveric Specimens: How Low Can We Go?
M. Tozakidou, C. Reisinger, D. Harder, J. Lieb, Z. Szucs-Farkas, M. Müller-Gerbl, U. Studler, S. Schindera and A. Hirschmann

American Journal of Neuroradiology February 2018, 39 (2) 385-391; DOI: https://doi.org/10.3174/ajnr.A5490
FELLOWS' JOURNAL CLUBSpine

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Clinical and Radiologic Characteristics of Deep Lumbosacral Dural Arteriovenous Fistulas
F. Jablawi, O. Nikoubashman, G.A. Schubert, M. Dafotakis, F.-J. Hans and M. Mull

American Journal of Neuroradiology February 2018, 39 (2) 392-398; DOI: https://doi.org/10.3174/ajnr.A5497

Twenty patients with deep lumbosacral spinal dural arteriovenous fistulas were included in this series. Cord T2 hyperintensity and contrast enhancement were present in most cases. The filum vein and/or lumbar veins were dilated in 95% of patients. Time-resolved contrast-enhanced dynamic MRA indicated a spinal DAVF at or below the L5 vertebral level in 7/8 (88%) patients who received time-resolved contrast-enhanced dynamic MRA before DSA. A bilateral arterial supply of the fistula was detected via DSA in 5 (25%) patients. The authors conclude that time-resolved contrast-enhanced dynamic MRA facilitates the detection of the drainage vein and helps to localize deep lumbosacral-located fistulas with a high sensitivity before DSA. Definite detection remains challenging and requires conventional spinal angiography.
Spine

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Cervical Cord Atrophy and Long-Term Disease Progression in Patients with Primary-Progressive Multiple Sclerosis
F.X. Aymerich, C. Auger, J. Alonso, M. Alberich, J. Sastre-Garriga, M. Tintoré, X. Montalban and A. Rovira

American Journal of Neuroradiology February 2018, 39 (2) 399-404; DOI: https://doi.org/10.3174/ajnr.A5495

White Paper

Extracranial Vascular

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Carotid Artery Wall Imaging: Perspective and Guidelines from the ASNR Vessel Wall Imaging Study Group and Expert Consensus Recommendations of the American Society of Neuroradiology
L. Saba, C. Yuan, T.S. Hatsukami, N. Balu, Y. Qiao, J.K. DeMarco, T. Saam, A.R. Moody, D. Li, C.C. Matouk, M.H. Johnson, H.R. Jäger, M. Mossa-Basha, M.E. Kooi, Z. Fan, D. Saloner, M. Wintermark, D.J. Mikulis and B.A. Wasserman on behalf of the Vessel Wall Imaging Study Group of the American Society of Neuroradiology

American Journal of Neuroradiology February 2018, 39 (2) E9-E31; DOI: https://doi.org/10.3174/ajnr.A5488

Letters: (Online only)

LETTER

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Multiparametric Imaging Improves Confidence in the Diagnosis of Multinodular and Vacuolating Neuronal Tumor of the Cerebrum
A. Lecler, D. Chauvet, H.A. Biassette and J. Savatovsky

American Journal of Neuroradiology February 2018, 39 (2) E32-E33; DOI: https://doi.org/10.3174/ajnr.A5425
LETTER

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Reply:
R.H. Nunes, C.C.-T. Hsu, T.W. Watkins and A.G. Osborn

American Journal of Neuroradiology February 2018, 39 (2) E34; DOI: https://doi.org/10.3174/ajnr.A5447
LETTER

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The Anesthesiologist, Rather Than the Anesthesia, May Influence the Outcomes following Stroke Thrombectomy
W. Fandino

American Journal of Neuroradiology February 2018, 39 (2) E35; DOI: https://doi.org/10.3174/ajnr.A5430
LETTER

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Economic Considerations in MR Imaging of Patients with Cardiac Devices
M.U. Antonucci, M.V. Spampinato and E.R. Ritenour

American Journal of Neuroradiology February 2018, 39 (2) E36; DOI: https://doi.org/10.3174/ajnr.A5450
LETTER

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Reply:
A.W. Korutz, E.J. Russell, T.A. Hijaz, J.D. Collins, B.P. Knight and A.J. Nemeth

American Journal of Neuroradiology February 2018, 39 (2) E37; DOI: https://doi.org/10.3174/ajnr.A5467

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