American Journal of Neuroradiology: 37 (4)

April 01, 2016; Volume 37,Issue 4

Perspectives

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Perspectives
Anish Kapadia

American Journal of Neuroradiology April 2016, 37 (4) 585; DOI: https://doi.org/10.3174/ajnr.P0016

Editorial

INTERVENTIONAL

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Current Evaluation of the Safety and Efficacy of Aneurysm Treatment with the WEB Device
L. Pierot, A. Arthur, L. Spelle and D. Fiorella

American Journal of Neuroradiology April 2016, 37 (4) 586-587; DOI: https://doi.org/10.3174/ajnr.A4702

Review Article

HEAD & NECK

Open Access
Dynamic Contrast-Enhanced MR Imaging in Head and Neck Cancer: Techniques and Clinical Applications
S. Gaddikeri, R.S. Gaddikeri, T. Tailor and Y. Anzai

American Journal of Neuroradiology April 2016, 37 (4) 588-595; DOI: https://doi.org/10.3174/ajnr.A4458

Practice Perspectives

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ICD-10: History and Context
J.A. Hirsch, G. Nicola, G. McGinty, R.W. Liu, R.M. Barr, M.D. Chittle and L. Manchikanti

American Journal of Neuroradiology April 2016, 37 (4) 596-599; DOI: https://doi.org/10.3174/ajnr.A4696

General Contents

ADULT BRAIN

Open Access
Clinical Applications of Simultaneous PET/MR Imaging Using (R)-[¹¹C]-Verapamil with Cyclosporin A: Preliminary Results on a Surrogate Marker of Drug-Resistant Epilepsy
J.-W. Shin, K. Chu, S.A. Shin, K.-H. Jung, S.-T. Lee, Y.-S. Lee, J. Moon, D.Y. Lee, J.S. Lee, D.S. Lee and S.K. Lee

American Journal of Neuroradiology April 2016, 37 (4) 600-606; DOI: https://doi.org/10.3174/ajnr.A4566
ADULT BRAIN

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Cortical Cerebral Blood Flow, Oxygen Extraction Fraction, and Metabolic Rate in Patients with Middle Cerebral Artery Stenosis or Acute Stroke
Z. Liu and Y. Li

American Journal of Neuroradiology April 2016, 37 (4) 607-614; DOI: https://doi.org/10.3174/ajnr.A4624
ADULT BRAIN

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Risk Factors for Growth of Intracranial Aneurysms: A Systematic Review and Meta-Analysis
W. Brinjikji, Y.-Q. Zhu, G. Lanzino, H.J. Cloft, M.H. Murad, Z. Wang and D.F. Kallmes

American Journal of Neuroradiology April 2016, 37 (4) 615-620; DOI: https://doi.org/10.3174/ajnr.A4575
EDITOR'S CHOICEADULT BRAIN

Open Access
Computational Identification of Tumor Anatomic Location Associated with Survival in 2 Large Cohorts of Human Primary Glioblastomas
T.T. Liu, A.S. Achrol, L.A. Mitchell, W.A. Du, J.J. Loya, S.A. Rodriguez, A. Feroze, E.M. Westbroek, K.W. Yeom, J.M. Stuart, S.D. Chang, G.R. Harsh and D.L. Rubin

American Journal of Neuroradiology April 2016, 37 (4) 621-628; DOI: https://doi.org/10.3174/ajnr.A4631

Preoperative T1 anatomic MR images of 384 patients with glioblastomas were evaluated by an automated computational image-analysis pipeline to determine the anatomic locations of tumor in each patient. Voxel-based differences in tumor location between good and poor survival groups identified in the training cohort were used to classify patients in The Cancer Genome Atlas cohort into 2 brain-location groups, for which clinical features, messenger RNA expression, and copy number changes were compared. Tumors in the right occipitotemporal periventricular white matter were significantly associated with poor survival in both training and test cohorts. Tumors in the right periatrial location were associated with hypoxia pathway enrichment and PDGFRA amplification. The authors conclude that voxel-based location in glioblastoma is associated with patient outcome and may have a potential role for guiding personalized treatment.
ADULT BRAIN

Open Access
Radiologic Features and Expression of Vascular Endothelial Growth Factor Stratify Survival Outcomes in Patients with Glioblastoma
K. Wang, Y.Y. Wang, J.F. Wang, J. Ma, T. Jiang and J.P. Dai

American Journal of Neuroradiology April 2016, 37 (4) 629-635; DOI: https://doi.org/10.3174/ajnr.A4567
FELLOWS' JOURNAL CLUBADULT BRAIN

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Giant Intracranial Aneurysms at 7T MRI
T. Matsushige, B. Chen, A. Ringelstein, L. Umutlu, M. Forsting, H.H. Quick, U. Sure and K.H. Wrede

American Journal of Neuroradiology April 2016, 37 (4) 636-641; DOI: https://doi.org/10.3174/ajnr.A4569

Seven giant intracranial aneurysms were evaluated, and 2 aneurysms were available for histopathologic examination. Aneurysm walls were depicted as hypointense in TOF-MRA and SWI sequences with excellent contrast ratios to adjacent brain parenchyma. A triple-layered microstructure of the aneurysm walls was visualized in all aneurysms in TOF-MRA and SWI. This could be related to iron deposition in the wall, and similar findings were seen in 2 available histopathologic specimens. In vivo 7T TOF-MRA and SWI can delineate the aneurysm wall and the triple-layered wall microstructure in giant intracranial aneurysms.
EDITOR'S CHOICEADULT BRAIN

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A Spiral Spin-Echo MR Imaging Technique for Improved Flow Artifact Suppression in T1-Weighted Postcontrast Brain Imaging: A Comparison with Cartesian Turbo Spin-Echo
Z. Li, H.H. Hu, J.H. Miller, J.P. Karis, P. Cornejo, D. Wang and J.G. Pipe

American Journal of Neuroradiology April 2016, 37 (4) 642-647; DOI: https://doi.org/10.3174/ajnr.A4600

T1-weighted enhanced brain imaging was performed in 24 pediatric patients comparing the reference Cartesian TSE sequence (2 minutes 30 seconds) with a spiral spin-echo sequence (1 minutes 18 seconds) with similar spatial resolution and coverage. In 23/24 cases, spiral spin-echo was scored better than Cartesian TSE for flow artifact reduction and in 21 cases was superior in subjective preference. The authors demonstrate a relatively simple 2D spiral SE approach in T1-weighted postcontrast brain MR imaging that has minimal flow artifacts in comparison with its 2D Cartesian TSE counterpart.
INTERVENTIONAL

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Low-Dose Volume-of-Interest C-Arm CT Imaging of Intracranial Stents and Flow Diverters
P. Yang, A. Ahmed, S. Schafer, D. Niemann, B. Aagaard-Kienitz, K. Royalty and C. Strother

American Journal of Neuroradiology April 2016, 37 (4) 648-654; DOI: https://doi.org/10.3174/ajnr.A4590
INTERVENTIONAL

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WEB Treatment of Intracranial Aneurysms: Clinical and Anatomic Results in the French Observatory
L. Pierot, J. Moret, F. Turjman, D. Herbreteau, H. Raoult, X. Barreau, S. Velasco, H. Desal, A.-C. Januel, P. Courtheoux, J.-Y. Gauvrit, C. Cognard, A. Molyneux, J. Byrne and L. Spelle

American Journal of Neuroradiology April 2016, 37 (4) 655-659; DOI: https://doi.org/10.3174/ajnr.A4578
FELLOWS' JOURNAL CLUBINTERVENTIONAL

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The Added Value of Volume-of-Interest C-Arm CT Imaging during Endovascular Treatment of Intracranial Aneurysms
G. Chintalapani, P. Chinnadurai, A. Maier, Y. Xia, S. Bauer, H. Shaltoni, H. Morsi and M.E. Mawad

American Journal of Neuroradiology April 2016, 37 (4) 660-666; DOI: https://doi.org/10.3174/ajnr.A4605

VOI C-arm CT images were obtained in 28 patients undergoing endovascular treatment of intracranial aneurysms and the VOI images were reconstructed by using a novel prototype reconstruction algorithm to minimize truncation artifacts from double collimation. The reconstruction accuracy of VOI C-arm CT images was assessed quantitatively by comparing them with the full-head noncollimated images. Quality of VOI C-arm CT images was comparable with that of the standard Feldkamp, Davis, and Kress reconstruction of noncollimated C-arm CT images. The authors conclude that VOI imaging allows multiple 3D C-arm CT acquisitions and provides information related to device expansion, parent wall apposition, and neck coverage during the procedure, with very low additional radiation exposure to the patient.
INTERVENTIONAL

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Mechanical Thrombectomy for Isolated M2 Occlusions: A Post Hoc Analysis of the STAR, SWIFT, and SWIFT PRIME Studies
J.M. Coutinho, D.S. Liebeskind, L.-A. Slater, R.G. Nogueira, B.W. Baxter, E.I. Levy, A.H. Siddiqui, M. Goyal, O.O. Zaidat, A. Davalos, A. Bonafé, R. Jahan, J. Gralla, J.L. Saver and V.M. Pereira

American Journal of Neuroradiology April 2016, 37 (4) 667-672; DOI: https://doi.org/10.3174/ajnr.A4591
INTERVENTIONAL

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Mechanical Thrombectomy of Distal Occlusions in the Anterior Cerebral Artery: Recanalization Rates, Periprocedural Complications, and Clinical Outcome
J. Pfaff, C. Herweh, M. Pham, S. Schieber, P.A. Ringleb, M. Bendszus and M. Möhlenbruch

American Journal of Neuroradiology April 2016, 37 (4) 673-678; DOI: https://doi.org/10.3174/ajnr.A4594
INTERVENTIONAL

Open Access
Endovascular Treatment of Unruptured Paraclinoid Aneurysms: Single-Center Experience with 400 Cases and Literature Review
K. Shimizu, H. Imamura, Y. Mineharu, H. Adachi, C. Sakai and N. Sakai

American Journal of Neuroradiology April 2016, 37 (4) 679-685; DOI: https://doi.org/10.3174/ajnr.A4577
INTERVENTIONAL

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Associations between Cerebral Embolism and Carotid Intraplaque Hemorrhage during Protected Carotid Artery Stenting
G.H. Chung, J.Y. Jeong, H.S. Kwak and S.B. Hwang

American Journal of Neuroradiology April 2016, 37 (4) 686-691; DOI: https://doi.org/10.3174/ajnr.A4576
INTERVENTIONAL

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Superselective Intra-Arterial Ethanol Sclerotherapy of Feeding Artery and Nidal Aneurysms in Ruptured Cerebral Arteriovenous Malformations
F. Settecase, S.W. Hetts, A.D. Nicholson, M.R. Amans, D.L. Cooke, C.F. Dowd, R.T. Higashida and V.V. Halbach

American Journal of Neuroradiology April 2016, 37 (4) 692-697; DOI: https://doi.org/10.3174/ajnr.A4584
PEDIATRICS

Open Access
White Matter Abnormality Correlates with Developmental and Seizure Outcomes in West Syndrome of Unknown Etiology
J. Natsume, C. Ogawa, T. Fukasawa, H. Yamamoto, N. Ishihara, Y. Sakaguchi, Y. Ito, T. Takeuchi, Y. Azuma, N. Ando, T. Kubota, T. Tsuji, H. Kawai, S. Naganawa and H. Kidokoro

American Journal of Neuroradiology April 2016, 37 (4) 698-705; DOI: https://doi.org/10.3174/ajnr.A4589
EDITOR'S CHOICEPEDIATRICS

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Cerebral Blood Flow Improvement after Indirect Revascularization for Pediatric Moyamoya Disease: A Statistical Analysis of Arterial Spin-Labeling MRI
T. Blauwblomme, H. Lemaitre, O. Naggara, R. Calmon, M. Kossorotoff, M. Bourgeois, B. Mathon, S. Puget, M. Zerah, F. Brunelle, C. Sainte-Rose and N. Boddaert

American Journal of Neuroradiology April 2016, 37 (4) 706-712; DOI: https://doi.org/10.3174/ajnr.A4592

The authors evaluated 15 children treated by indirect cerebral revascularization with multiple burr-holes between 2011–2013. Arterial spin-labeling MR imaging and T1 sequences were analyzed under SPM8 before and after the operation (3 and 12 months). Group analysis showed statistically significant preoperative hypoperfusion in the MCA territory in the Moyamoya hemispheres and a significant increase of cerebral perfusion in the same territory after revascularization. The authors conclude that SPM analysis of arterial spin-labeling MR imaging offers a noninvasive evaluation of preoperative cerebral hemodynamic impairment and an objective assessment of postoperative improvement in children with Moyamoya disease.
PEDIATRICS

Open Access
Voxel-Based Morphometry and fMRI Revealed Differences in Brain Gray Matter in Breastfed and Milk Formula–Fed Children
X. Ou, A. Andres, R.T. Pivik, M.A. Cleves, J.H. Snow, Z. Ding and T.M. Badger

American Journal of Neuroradiology April 2016, 37 (4) 713-719; DOI: https://doi.org/10.3174/ajnr.A4593
PEDIATRICS

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Evaluation of Subependymal Gray Matter Heterotopias on Fetal MRI
U.D. Nagaraj, J.L. Peiro, K.S. Bierbrauer and B.M. Kline-Fath

American Journal of Neuroradiology April 2016, 37 (4) 720-725; DOI: https://doi.org/10.3174/ajnr.A4585
PEDIATRICS

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Asymptomatic Interhypothalamic Adhesions in Children
F.N. Ahmed, N.V. Stence and D.M. Mirsky

American Journal of Neuroradiology April 2016, 37 (4) 726-729; DOI: https://doi.org/10.3174/ajnr.A4602
SPINE

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Increased Facet Fluid Predicts Dynamic Changes in the Dural Sac Size on Axial-Loaded MRI in Patients with Lumbar Spinal Canal Stenosis
H. Kanno, H. Ozawa, Y. Koizumi, N. Morozumi, T. Aizawa and E. Itoi

American Journal of Neuroradiology April 2016, 37 (4) 730-735; DOI: https://doi.org/10.3174/ajnr.A4582
FELLOWS' JOURNAL CLUBSPINE

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Imaging Psoas Sign in Lumbar Spinal Infections: Evaluation of Diagnostic Accuracy and Comparison with Established Imaging Characteristics
L.N. Ledbetter, K.L. Salzman and L.M. Shah

American Journal of Neuroradiology April 2016, 37 (4) 736-741; DOI: https://doi.org/10.3174/ajnr.A4571

In this retrospective case-control study, the authors evaluated lumbar spine MR imagings during a 30-month period that were requested for the evaluation of discitis-osteomyelitis. Fifty age-matched control patients were compared with 51 biopsy-proved or clinically diagnosed patients with discitis-osteomyelitis. The investigators assessed the randomly organized MR imaging examinations for abnormalities of the psoas musculature, vertebral bodies, discs, and epidural space. Psoas T2 hyperintensity demonstrated high sensitivity (92%), specificity (92%), and positive likelihood ratio (11.5). They conclude that psoas T2 hyperintensity, the imaging psoas sign, is highly correlated with discitis-osteomyelitis.
SPINE

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Age- and Level-Dependence of Fatty Infiltration in Lumbar Paravertebral Muscles of Healthy Volunteers
R.J. Crawford, L. Filli, J.M. Elliott, D. Nanz, M.A. Fischer, M. Marcon and E.J. Ulbrich

American Journal of Neuroradiology April 2016, 37 (4) 742-748; DOI: https://doi.org/10.3174/ajnr.A4596
SPINE

Open Access
Multicenter Validation of Mean Upper Cervical Cord Area Measurements from Head 3D T1-Weighted MR Imaging in Patients with Multiple Sclerosis
Y. Liu, C. Lukas, M.D. Steenwijk, M. Daams, A. Versteeg, Y. Duan, K. Li, F. Weiler, H.K. Hahn, M.P. Wattjes, F. Barkhof and H. Vrenken

American Journal of Neuroradiology April 2016, 37 (4) 749-754; DOI: https://doi.org/10.3174/ajnr.A4635
SPINE

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The Cervical Spinal Canal Tapers Differently in Patients with Chiari I with and without Syringomyelia
A. Thompson, N. Madan, J.R. Hesselink, G. Weinstein, A. Munoz del Rio and V. Haughton

American Journal of Neuroradiology April 2016, 37 (4) 755-758; DOI: https://doi.org/10.3174/ajnr.A4597
SPINE

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Radiographic Local Control of Spinal Metastases with Percutaneous Radiofrequency Ablation and Vertebral Augmentation
A.N. Wallace, A. Tomasian, D. Vaswani, R. Vyhmeister, R.O. Chang and J.W. Jennings

American Journal of Neuroradiology April 2016, 37 (4) 759-765; DOI: https://doi.org/10.3174/ajnr.A4595
SPINE

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CT-Fluoroscopic Cervical Transforaminal Epidural Steroid Injections: Extraforaminal Needle Tip Position Decreases Risk of Intravascular Injection
G.M. Lagemann, M.P. Yannes, A. Ghodadra, W.E. Rothfus and V. Agarwal

American Journal of Neuroradiology April 2016, 37 (4) 766-772; DOI: https://doi.org/10.3174/ajnr.A4603

Consensus Statement

Open Access
Training Guidelines for Endovascular Ischemic Stroke Intervention: An International Multi-Society Consensus Document
S.D. Lavine, K. Cockroft, B. Hoh, N. Bambakidis, A.A. Khalessi, H. Woo, H. Riina, A. Siddiqui, J.A. Hirsch, W. Chong, H. Rice, J. Wenderoth, P. Mitchell, A. Coulthard, T.J. Signh, C. Phatorous, M. Khangure, P. Klurfan, K. terBrugge, D. Iancu, T. Gunnarsson, O. Jansen, M. Muto, I. Szikora, L. Pierot, P. Brouwer, J. Gralla, S. Renowden, T. Andersson, J. Fiehler, F. Turjman, P. White, A.C. Januel, L. Spelle, Z. Kulcsar, R. Chapot, L. Spelle, A. Biondi, S. Dima, C. Taschner, M. Szajner, A. Krajina, N. Sakai, Y. Matsumaru, S. Yoshimura, M. Ezura, T. Fujinaka, K. Iihara, A. Ishii, T. Higashi, M. Hirohata, A. Hyodo, Y. Ito, M. Kawanishi, H. Kiyosue, E. Kobayashi, S. Kobayashi, N. Kuwayama, Y. Matsumoto, S. Miyachi, Y. Murayama, I. Nagata, I. Nakahara, S. Nemoto, Y. Niimi, H. Oishi, J. Satomi, T. Satow, K. Sugiu, M. Tanaka, T. Terada, H. Yamagami, O. Diaz, P. Lylyk, M.V. Jayaraman, A. Patsalides, C.D. Gandhi, S.K. Lee, T. Abruzzo, B. Albani, S.A. Ansari, A.S. Arthur, B.W. Baxter, K.R. Bulsara, M. Chen, J.E. Delgado Almandoz, J.F. Fraser, D.V. Heck, S.W. Hetts, M.S. Hussain, R.P. Klucznik, T.M. Leslie-Mawzi, W.J. Mack, R.A. McTaggart, P.M. Meyers, J. Mocco, C.J. Prestigiacomo, G.L. Pride, P.A. Rasmussen, R.M. Starke, P.J. Sunenshine, R.W. Tarr, D.F. Frei, M. Ribo, R.G. Nogueira, O.O. Zaidat, T. Jovin, I. Linfante, D. Yavagal, D. Liebeskind, R. Novakovic, S. Pongpech, G. Rodesch, M. Soderman, K. terBrugge, A. Taylor, T. Krings, D. Orbach, A. Biondi, L. Picard, D.C. Suh, M. Tanaka and H.Q. Zhang

American Journal of Neuroradiology April 2016, 37 (4) E31-E34; DOI: https://doi.org/10.3174/ajnr.A4766

Letters: (Online only)

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Asymptomatic Interhypothalamic Adhesions in Children
M.T. Whitehead and G. Vezina

American Journal of Neuroradiology April 2016, 37 (4) E35; DOI: https://doi.org/10.3174/ajnr.A4703
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Reply:
D.M. Mirsky, F.N. Ahmed and N.V. Stence

American Journal of Neuroradiology April 2016, 37 (4) E36; DOI: https://doi.org/10.3174/ajnr.A4745
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Integrative Analysis of 334 Patients with Blister-Like Aneurysms
L. Yang, X. Huang, X. Tan, H. Zhou and H.X. Bai

American Journal of Neuroradiology April 2016, 37 (4) E37; DOI: https://doi.org/10.3174/ajnr.A4709
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Reply:
S. Peschillo, D. Cannizzaro, E. Di Stasio, A. Caporlingua and P. Missori

American Journal of Neuroradiology April 2016, 37 (4) E38; DOI: https://doi.org/10.3174/ajnr.A4732
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Regarding “Clinical and Imaging Follow-Up of Patients with Coiled Basilar Tip Aneurysms Up to 20 Years”
A. Malhotra, X. Wu, V.B. Kalra, C.C. Matouk and H.P. Forman

American Journal of Neuroradiology April 2016, 37 (4) E39; DOI: https://doi.org/10.3174/ajnr.A4708
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Reply:
W.J. van Rooij, M. van Eijck, R. Bechan and G. Roks

American Journal of Neuroradiology April 2016, 37 (4) E40; DOI: https://doi.org/10.3174/ajnr.A4711

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