Index by author
Nagesh, C.
- EDITOR'S CHOICEAdult BrainYou have accessCombining Diffusion Tensor Metrics and DSC Perfusion Imaging: Can It Improve the Diagnostic Accuracy in Differentiating Tumefactive Demyelination from High-Grade Glioma?S.B. Hiremath, A. Muraleedharan, S. Kumar, C. Nagesh, C. Kesavadas, M. Abraham, T.R. Kapilamoorthy and B. ThomasAmerican Journal of Neuroradiology April 2017, 38 (4) 685-690; DOI: https://doi.org/10.3174/ajnr.A5089
Fourteen patients with tumefactive demyelinating lesions and 21 patients with high-grade gliomas underwent MR imaging with conventional, DTI, and DSC perfusion imaging. Conventional imaging sequences had a sensitivity of 80.9% and specificity of 57.1% in differentiating high-grade gliomas from tumefactive demyelinating lesions. DTI metrics (p:q tensor decomposition) and DSC perfusion demonstrated a statistically significant difference among enhancing portions in tumefactive demyelinating lesions and high-grade gliomas. The highest specificity was found for ADC, the anisotropic component of the diffusion tensor, and relative CBV. The authors conclude that DTI and DSC perfusion add profoundly to conventional imaging in differentiating tumefactive demyelinating lesions and high-grade gliomas.
Nariai, T.
- Adult BrainOpen AccessNoninvasive Evaluation of CBF and Perfusion Delay of Moyamoya Disease Using Arterial Spin-Labeling MRI with Multiple Postlabeling Delays: Comparison with 15O-Gas PET and DSC-MRIS. Hara, Y. Tanaka, Y. Ueda, S. Hayashi, M. Inaji, K. Ishiwata, K. Ishii, T. Maehara and T. NariaiAmerican Journal of Neuroradiology April 2017, 38 (4) 696-702; DOI: https://doi.org/10.3174/ajnr.A5068
Nasr, D.
- Extracranial VascularYou have accessIntracranial and Extracranial Neurovascular Manifestations of Takayasu ArteritisK.M. Bond, D. Nasr, V. Lehman, G. Lanzino, H.J. Cloft and W. BrinjikjiAmerican Journal of Neuroradiology April 2017, 38 (4) 766-772; DOI: https://doi.org/10.3174/ajnr.A5095
Netter, L.G.
- Pediatric NeuroimagingYou have accessDiagnostic Performance of Ultrafast Brain MRI for Evaluation of Abusive Head TraumaS.F. Kralik, M. Yasrebi, N. Supakul, C. Lin, L.G. Netter, R.A. Hicks, R.A. Hibbard, L.L. Ackerman, M.L. Harris and C.Y. HoAmerican Journal of Neuroradiology April 2017, 38 (4) 807-813; DOI: https://doi.org/10.3174/ajnr.A5093
Niu, K.
- FELLOWS' JOURNAL CLUBNeurointerventionOpen AccessEvaluation of Collaterals and Clot Burden Using Time-Resolved C-Arm Conebeam CT Angiography in the Angiography Suite: A Feasibility StudyP. Yang, K. Niu, Y. Wu, T. Struffert, A. Doerfler, P. Holter, B. Aagaard-Kienitz, C. Strother and G.-H. ChenAmerican Journal of Neuroradiology April 2017, 38 (4) 747-752; DOI: https://doi.org/10.3174/ajnr.A5072
Ten C-arm conebeam CT perfusion datasets from 10 subjects with acute ischemic stroke acquired before endovascular treatment were retrospectively processed to generate time-resolved conebeam CTA. From time-resolved conebeam CTA, 2 experienced readers evaluated the clot burden and collateral flow in consensus by using previously reported scoring systems and assessed the clinical value of this novel imaging technique. The 2 readers agreed that time-revolved C-arm conebeam CTA was the preferred method for evaluating the clot burden and collateral flow compared with other conventional imaging methods. They conclude that comprehensive evaluations of clot burden and collateral flow are feasible by using time-resolved C-arm conebeam CTA data acquired in the angiography suite.