Index by author
Koonen, J.J.
- 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.
Kortman, H.
- 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.
Krings, T.
- 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.
Kumbla, S.
- Clinical ReportYou have accessMacrocerebellum in Achondroplasia: A Further CNS Manifestation of FGFR3 Mutations?H.M. Pascoe, J.Y.-M. Yang, J. Chen, A.M. Fink and S. KumblaAmerican Journal of Neuroradiology February 2020, 41 (2) 338-342; DOI: https://doi.org/10.3174/ajnr.A6369
Kunst, M.M.
- 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.
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