Index by author
Kadirvel, R.
- InterventionalOpen AccessAnalysis of Flow Dynamics and Outcomes of Cerebral Aneurysms Treated with Intrasaccular Flow-Diverting DevicesJ.R. Cebral, B.J. Chung, F. Mut, J. Chudyk, C. Bleise, E. Scrivano, P. Lylyk, R. Kadirvel and D. KallmesAmerican Journal of Neuroradiology September 2019, 40 (9) 1511-1516; DOI: https://doi.org/10.3174/ajnr.A6169
Kallmes, D.
- InterventionalOpen AccessAnalysis of Flow Dynamics and Outcomes of Cerebral Aneurysms Treated with Intrasaccular Flow-Diverting DevicesJ.R. Cebral, B.J. Chung, F. Mut, J. Chudyk, C. Bleise, E. Scrivano, P. Lylyk, R. Kadirvel and D. KallmesAmerican Journal of Neuroradiology September 2019, 40 (9) 1511-1516; DOI: https://doi.org/10.3174/ajnr.A6169
Kampondeni, S.D.
- PediatricsOpen AccessDiffusion-Weighted MR Imaging in a Prospective Cohort of Children with Cerebral Malaria Offers Insights into Pathophysiology and PrognosisS.M. Moghaddam, G.L. Birbeck, T.E. Taylor, K.B. Seydel, S.D. Kampondeni and M.J. PotchenAmerican Journal of Neuroradiology September 2019, 40 (9) 1575-1580; DOI: https://doi.org/10.3174/ajnr.A6159
Kannath, S.K.
- FELLOWS' JOURNAL CLUBSpineYou have accessComparative Analysis of Volumetric High-Resolution Heavily T2-Weighted MRI and Time-Resolved Contrast-Enhanced MRA in the Evaluation of Spinal Vascular MalformationsS.K. Kannath, S. Mandapalu, B. Thomas, J. Enakshy Rajan and C. KesavadasAmerican Journal of Neuroradiology September 2019, 40 (9) 1601-1606; DOI: https://doi.org/10.3174/ajnr.A6164
The authors compared the efficacy of volumetric high-resolution heavily T2-weighted and time-resolved contrast-enhanced images in spinal vascular malformation diagnosis and feeder characterization and assessed whether a combined evaluation improved the overall accuracy of diagnosis in 28 patients. Both sequences demonstrated 100% sensitivity and 93.5% accuracy for the detection of spinal vascular malformations. Volumetric high-resolution heavily T2-weighted imaging was superior to time-resolved contrast-enhanced MR imaging for identification of spinal cord arteriovenous malformations while the opposite was observed for perimedullary arteriovenous fistulas. Both sequences showed equal sensitivity (100%) and accuracy (87%) for spinal dural arteriovenous fistulas. They conclude that combined volumetric high-resolution heavily T2-weighted imaging and time-resolved contrast-enhanced MR imaging can improve the sensitivity and accuracy of spinal vascular malformation diagnosis, classification, and feeder characterization.
Kappos, L.
- FELLOWS' JOURNAL CLUBSpineOpen AccessAutomatic Spinal Cord Gray Matter Quantification: A Novel ApproachC. Tsagkas, A. Horvath, A. Altermatt, S. Pezold, M. Weigel, T. Haas, M. Amann, L. Kappos, T. Sprenger, O. Bieri, P. Cattin and K. ParmarAmerican Journal of Neuroradiology September 2019, 40 (9) 1592-1600; DOI: https://doi.org/10.3174/ajnr.A6157
The authors assessed the reproducibility and accuracy of cervical spinal cord gray matter and white matter cross-sectional area measurements using magnetization inversion recovery acquisition images and a fully automatic postprocessing segmentation algorithm. The cervical spinal cord of 24 healthy subjects was scanned in a test-retest fashion on a 3T MR imaging system. Twelve axial averaged magnetization inversion recovery acquisition slices were acquired over a 48-mm cord segment. GM and WM were both manually segmented by 2 experienced readers and compared with an automatic variational segmentation algorithm with a shape prior modified for 3D data with a slice similarity prior. Reproducibility was high for both methods, while being better for the automatic approach. The accuracy of the automatic method compared with the manual reference standard was excellent. They conclude that the fully automated postprocessing segmentation algorithm demonstrated an accurate and reproducible spinal cord GM and WM segmentation.
Kesavadas, C.
- FELLOWS' JOURNAL CLUBSpineYou have accessComparative Analysis of Volumetric High-Resolution Heavily T2-Weighted MRI and Time-Resolved Contrast-Enhanced MRA in the Evaluation of Spinal Vascular MalformationsS.K. Kannath, S. Mandapalu, B. Thomas, J. Enakshy Rajan and C. KesavadasAmerican Journal of Neuroradiology September 2019, 40 (9) 1601-1606; DOI: https://doi.org/10.3174/ajnr.A6164
The authors compared the efficacy of volumetric high-resolution heavily T2-weighted and time-resolved contrast-enhanced images in spinal vascular malformation diagnosis and feeder characterization and assessed whether a combined evaluation improved the overall accuracy of diagnosis in 28 patients. Both sequences demonstrated 100% sensitivity and 93.5% accuracy for the detection of spinal vascular malformations. Volumetric high-resolution heavily T2-weighted imaging was superior to time-resolved contrast-enhanced MR imaging for identification of spinal cord arteriovenous malformations while the opposite was observed for perimedullary arteriovenous fistulas. Both sequences showed equal sensitivity (100%) and accuracy (87%) for spinal dural arteriovenous fistulas. They conclude that combined volumetric high-resolution heavily T2-weighted imaging and time-resolved contrast-enhanced MR imaging can improve the sensitivity and accuracy of spinal vascular malformation diagnosis, classification, and feeder characterization.
Khandelwal, P.
- InterventionalYou have accessDistal Transradial Access in the Anatomic Snuffbox for Diagnostic Cerebral AngiographyP. Patel, N. Majmundar, I. Bach, V. Dodson, F. Al-Mufti, L. Tomycz and P. KhandelwalAmerican Journal of Neuroradiology September 2019, 40 (9) 1526-1528; DOI: https://doi.org/10.3174/ajnr.A6178
Kim, D.
- Adult BrainYou have accessUsefulness of the Delay Alternating with Nutation for Tailored Excitation Pulse with T1-Weighted Sampling Perfection with Application-Optimized Contrasts Using Different Flip Angle Evolution in the Detection of Cerebral Metastases: Comparison with MPRAGE ImagingD. Kim, Y.J. Heo, H.W. Jeong, J.W. Baek, J.-Y. Han, J.Y. Lee, S.-C. Jin and H.J. BaekAmerican Journal of Neuroradiology September 2019, 40 (9) 1469-1475; DOI: https://doi.org/10.3174/ajnr.A6158
Klostranec, J.M.
- InterventionalYou have accessSentinel Angiographic Signs of Cerebral Hyperperfusion after Angioplasty and Stenting of Intracranial Atherosclerotic Stenosis: A Technical NoteM. Ghuman, A.C.O. Tsang, J.M. Klostranec and T. KringsAmerican Journal of Neuroradiology September 2019, 40 (9) 1523-1525; DOI: https://doi.org/10.3174/ajnr.A6149
Koktzoglou, I.
- Extracranial VascularOpen AccessNon-Contrast-Enhanced Carotid MRA: Clinical Evaluation of a Novel Ungated Radial Quiescent-Interval Slice-Selective MRA at 1.5TS. Peters, M. Huhndorf, U. Jensen-Kondering, N. Larsen, I. Koktzoglou, R.R. Edelman, J. Graessner, M. Both, O. Jansen and M. Salehi RaveshAmerican Journal of Neuroradiology September 2019, 40 (9) 1529-1537; DOI: https://doi.org/10.3174/ajnr.A6171