Index by author
Singh, V.
- SpineOpen AccessConvolutional Neural Network–Based Automated Segmentation of the Spinal Cord and Contusion Injury: Deep Learning Biomarker Correlates of Motor Impairment in Acute Spinal Cord InjuryD.B. McCoy, S.M. Dupont, C. Gros, J. Cohen-Adad, R.J. Huie, A. Ferguson, X. Duong-Fernandez, L.H. Thomas, V. Singh, J. Narvid, L. Pascual, N. Kyritsis, M.S. Beattie, J.C. Bresnahan, S. Dhall, W. Whetstone, J.F. Talbott and TRACK-SCI InvestigatorsAmerican Journal of Neuroradiology April 2019, 40 (4) 737-744; DOI: https://doi.org/10.3174/ajnr.A6020
Smajda, S.
- NeurointerventionYou have accessEndovascular Treatment for Low-Grade (Spetzler-Martin I–II) Brain Arteriovenous MalformationsH. Baharvahdat, R. Blanc, R. Fahed, S. Smajda, G. Ciccio, J.-P. Desilles, H. Redjem, S. Escalard, M. Mazighi, D. Chauvet, T. Robert, P. Sasannejad and M. PiotinAmerican Journal of Neuroradiology April 2019, 40 (4) 668-672; DOI: https://doi.org/10.3174/ajnr.A5988
Sohn, S.-I.
- NeurointerventionOpen AccessClot Burden Score and Early Ischemia Predict Intracranial Hemorrhage following Endovascular TherapyV. Yogendrakumar, F. Al-Ajlan, M. Najm, J. Puig, A. Calleja, S.-I. Sohn, S.H. Ahn, R. Mikulik, N. Asdaghi, T.S. Field, A. Jin, T. Asil, J.-M. Boulanger, M.D. Hill, A.M. Demchuk, B.K. Menon and D. Dowlatshahi on behalf of the INTERRSeCT InvestigatorsAmerican Journal of Neuroradiology April 2019, 40 (4) 655-660; DOI: https://doi.org/10.3174/ajnr.A6009
Steinklein, J.M.
- FELLOWS' JOURNAL CLUBAdult BrainYou have accessMeasuring Glymphatic Flow in Man Using Quantitative Contrast-Enhanced MRIR. Watts, J.M. Steinklein, L. Waldman, X. Zhou and C.G. FilippiAmerican Journal of Neuroradiology April 2019, 40 (4) 648-651; DOI: https://doi.org/10.3174/ajnr.A5931
In this technical report, the authors used MR myelography to demonstrate the feasibility of T1 mapping to quantify contrast concentration to analyze glymphatic flow in man. There is increasing interest in its use as a biomarker and potential therapeutic target in Alzheimer disease.
Stokes, A.
- EDITOR'S CHOICEAdult BrainOpen AccessMoving Toward a Consensus DSC-MRI Protocol: Validation of a Low–Flip Angle Single-Dose Option as a Reference Standard for Brain TumorsK.M. Schmainda, M.A. Prah, L.S. Hu, C.C. Quarles, N. Semmineh, S.D. Rand, J.M. Connelly, B. Anderies, Y. Zhou, Y. Liu, B. Logan, A. Stokes, G. Baird and J.L. BoxermanAmerican Journal of Neuroradiology April 2019, 40 (4) 626-633; DOI: https://doi.org/10.3174/ajnr.A6015
DSC-MR imaging using preload, intermediate (60°) flip angle and postprocessing leakage correction has gained traction as a standard methodology. Simulations suggest that DSC-MR imaging with flip angle = 30° and no preload yields relative CBV practically equivalent to the reference standard. Eighty-four patients with brain lesions were enrolled in this 3-institution study. Forty-three patients satisfied the inclusion criteria. DSC-MR imaging (3T, single-dose gadobutrol, gradient recalled-echo–EPI, TE=20–35 ms, TR=1.2–1.63 seconds) was performed twice for each patient, with flip angle = 30°–35° and no preload (P-) or provided preload (P+) for an intermediate flipangle = 60°. Compared with 60°/P+/C+, 30°/P-/C+ had closest mean standardized relative CBV, highest Lin concordance correlation coefficient, and lowest Bland-Altman bias.