Index by author
Radovanovic, I.
- FELLOWS' JOURNAL CLUBClinical ReportYou have accessArtery of Davidoff and Schechter Supply in Dural Arteriovenous FistulasK.D. Bhatia, H. Kortman, T. Wälchli, I. Radovanovic, V.M. Pereira and T. KringsAmerican Journal of Neuroradiology February 2020, 41 (2) 300-304; DOI: https://doi.org/10.3174/ajnr.A6380
The artery of Davidoff and Schechter is a dural branch of the posterior cerebral artery that can supply the meninges close to the falcotentorial junction. It is usually not identified on angiography except when enlarged in the setting of a dural AVF or meningioma. The impact on treatment of the artery of Davidoff and Schechter supply to a fistula is not well-described in the literature. The authors' retrospective analysis of patients with dural AVFs treated at the Toronto Western Hospital between 2006 and 2018 identified 6 patients with dural AVFs receiving supply from the artery of Davidoff and Schechter (of a total of 173 patients with dural AVFs). All patients were initially treated by transarterial embolization using liquid embolic agents. Three patients required a second endovascular procedure partly due to residual supply from the artery of Davidoff and Schechter.
Raoult, H.
- NeurointerventionYou have accessDWI-Based Algorithm to Predict Disability in Patients Treated with Thrombectomy for Acute StrokeH. Raoult, M.V. Lassalle, B. Parat, C. Rousseau, F. Eugène, S. Vannier, S. Evain, A. Le Bras, T. Ronziere, J.C. Ferre, J.Y. Gauvrit and B. LaviolleAmerican Journal of Neuroradiology February 2020, 41 (2) 274-279; DOI: https://doi.org/10.3174/ajnr.A6379
Raseman, J.
- FELLOWS' JOURNAL CLUBSpine Imaging and Spine Image-Guided InterventionsYou have accessRenal Excretion of Contrast on CT Myelography: A Specific Marker of CSF LeakS. Behbahani, J. Raseman, H. Orlowski, A. Sharma and R. EldayaAmerican Journal of Neuroradiology February 2020, 41 (2) 351-356; DOI: https://doi.org/10.3174/ajnr.A6393
The authors performed a retrospective review of postmyelographic CT scans from 49 consecutive patients seen between January 2009 and August 2018 with imaging and/or clinical findings related to intracranial hypotension. Each scan was evaluated by both a neuroradiology fellow and a board-certified neuroradiologist for the presence of contrast in the renal excretory system. A similar assessment was also performed on 90 consecutive control subjects who underwent CT myelography for alternative indications. Among the 49 patients with suspected CSF leak, 21 (43%) had an overt CSF leak on postmyelographic CT (group 1) and 28 (57%) did not (group 2). Overall, renal contrast was identified in 7/49 patients (14.3%): 5 (24%) patients in group 1, and 2 (7%) patients in group 2. Renal contrast was not seen in any of the 90 controls on postmyelographic CT. Renal contrast was exclusively seen in patients with a clinically or radiographically suspected CSF leak. Identification of this finding should prompt a second look for subtle myelographic contrast extravasation or an underlying CSF-venous fistula.
Rava, R.A.
- EDITOR'S CHOICEAdult BrainYou have accessAssessment of a Bayesian Vitrea CT Perfusion Analysis to Predict Final Infarct and Penumbra Volumes in Patients with Acute Ischemic Stroke: A Comparison with RAPIDR.A. Rava, K.V. Snyder, M. Mokin, M. Waqas, A.B. Allman, J.L. Senko, A.R. Podgorsak, M.M. Shiraz Bhurwani, Y. Hoi, A.H. Siddiqui, J.M. Davies, E.I. Levy and C.N. IonitaAmerican Journal of Neuroradiology February 2020, 41 (2) 206-212; DOI: https://doi.org/10.3174/ajnr.A6395
Data were retrospectively collected for 105 patients with acute ischemic stroke (55 patients with successful recanalization [TICI 2b/2c/3] and large-vessel occlusions and 50 patients without interventions). Final infarct volumes were calculated using DWI and FLAIR 24 hours following CTP imaging. RAPID and the Vitrea Bayesian CTP algorithm (with 3 different settings) predicted infarct and penumbra volumes for comparison with final infarct volumes to assess software performance. RAPID and Vitrea default setting had the most accurate final infarct volume prediction in patients with interventions. Default Vitrea and RAPID were the most and least accurate in determining final infarct volume for patients without an intervention, respectively. Compared with RAPID, the Vitrea default setting was noninferior for patients with interventions and superior in penumbra estimation for patients without interventions as indicated by mean infarct differences and correlations with final infarct volumes.
Ray, A.
- Clinical ReportYou have accessIntra-Arterial Verapamil Treatment in Oral Therapy–Refractory Reversible Cerebral Vasoconstriction SyndromeJ.M. Ospel, C.H. Wright, R. Jung, L.L.M. Vidal, S. Manjila, G. Singh, D.V. Heck, A. Ray and K.A. BlackhamAmerican Journal of Neuroradiology February 2020, 41 (2) 293-299; DOI: https://doi.org/10.3174/ajnr.A6378
Richelle, H.R.
- Adult BrainYou have accessPredictive Value of Noncontrast Head CT with Negative Findings in the Emergency Department SettingA.L. Callen, D.S. Chow, Y.A. Chen, H.R. Richelle, J. Pao, M. Bardis, B.D. Weinberg, C.P. Hess and L.P. SugrueAmerican Journal of Neuroradiology February 2020, 41 (2) 213-218; DOI: https://doi.org/10.3174/ajnr.A6408
Roberts, D.R.
- LetterYou have accessReply:D.R. Roberts, D. Asemani, P.J. Nietert, M.A. Eckert, D.C. Inglesby, J.J. Bloomberg, M.S. George and T.R. BrownAmerican Journal of Neuroradiology February 2020, 41 (2) E8; DOI: https://doi.org/10.3174/ajnr.A6400
Robison, R.K.
- EDITOR'S CHOICEAdult BrainYou have accessSpiral T1 Spin-Echo for Routine Postcontrast Brain MRI Exams: A Multicenter Multireader Clinical EvaluationM.B. Ooi, Z. Li, R.K. Robison, D. Wang, A.G. Anderson, N.R. Zwart, A. Bakhru, S. Nagaraj, T. Mathews, S. Hey, J.J. Koonen, I.E. Dimitrov, H.T. Friel, Q. Lu, M. Obara, I. Saha, H. Wang, Y. Wang, Y. Zhao, M. Temkit, H.H. Hu, T.L. Chenevert, O. Togao, J.A. Tkach, U.D. Nagaraj, M.C. Pinho, R.K. Gupta, J.E. Small, M.M. Kunst, J.P. Karis, J.B. Andre, J.H. Miller, N.K. Pinter and J.G. PipeAmerican Journal of Neuroradiology February 2020, 41 (2) 238-245; DOI: https://doi.org/10.3174/ajnr.A6409
The authors report a multicenter multireader study that was designed to compare spiral with standard-of-care Cartesian postcontrast structural brain MR imaging on the basis of relative performance in 10 metrics of image quality, artifact prevalence, and diagnostic benefit. Seven clinical sites acquired 88 total subjects. For each subject, sites acquired 2 postcontrast MR imaging scans: a spiral 2D T1 spin-echo, and 1 of 4 routine Cartesian 2D T1 spin-echo/TSE scans. Nine neuroradiologists independently reviewed each subject, with the matching pair of spiral and Cartesian scans compared side-by-side, and scored the subject on 10 image-quality metrics. Spiral was superior to Cartesian in 7 of 10 metrics (flow artifact mitigation, SNR, GM/WM contrast, image sharpness, lesion conspicuity, preference for diagnosing abnormal enhancement, and overall intracranial image quality), comparable in 1 of 10 metrics (motion artifacts), and inferior in 2 of 10 metrics (susceptibility artifacts, overall extracranial image quality). Spiral 2D T1 spin-echo for routine structural brain MR imaging is feasible in the clinic with conventional scanners and was preferred by neuroradiologists for overall postcontrast intracranial evaluation.
Roh, J.
- NeurointerventionYou have accessAsymptomatic Cerebral Vasoconstriction after Carotid Artery StentingC.H. Kang, J. Roh, J.A. Yeom, S.H. Ahn, M.G. Park, K.P. Park and S.K. BaikAmerican Journal of Neuroradiology February 2020, 41 (2) 305-309; DOI: https://doi.org/10.3174/ajnr.A6385
Ronziere, T.
- NeurointerventionYou have accessDWI-Based Algorithm to Predict Disability in Patients Treated with Thrombectomy for Acute StrokeH. Raoult, M.V. Lassalle, B. Parat, C. Rousseau, F. Eugène, S. Vannier, S. Evain, A. Le Bras, T. Ronziere, J.C. Ferre, J.Y. Gauvrit and B. LaviolleAmerican Journal of Neuroradiology February 2020, 41 (2) 274-279; DOI: https://doi.org/10.3174/ajnr.A6379
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