Index by author
R, Gowtham
- LetterYou have accessTowards Reproducible Results: Validating CT Hemorrhage-Detection Algorithms on Standard DatasetsN. Damodaran and Gowtham RAmerican Journal of Neuroradiology December 2018, 39 (12) E127; DOI: https://doi.org/10.3174/ajnr.A5849
Ramasamy, D.P.
- Adult BrainOpen AccessBrain Atrophy Is Associated with Disability Progression in Patients with MS followed in a Clinical RoutineE. Ghione, N. Bergsland, M.G. Dwyer, J. Hagemeier, D. Jakimovski, I. Paunkoski, D.P. Ramasamy, D. Silva, E. Carl, D. Hojnacki, C. Kolb, B. Weinstock-Guttman and R. ZivadinovAmerican Journal of Neuroradiology December 2018, 39 (12) 2237-2242; DOI: https://doi.org/10.3174/ajnr.A5876
Raslau, F.D.
- EDITOR'S CHOICEFunctionalYou have accessPeeking into the Black Box of Coregistration in Clinical fMRI: Which Registration Methods Are Used and How Well Do They Perform?F.D. Raslau, L.Y. Lin, A.H. Andersen, D.K. Powell, C.D. Smith and E.J. EscottAmerican Journal of Neuroradiology December 2018, 39 (12) 2332-2339; DOI: https://doi.org/10.3174/ajnr.A5846
This retrospective study of presurgical fMRI for brain tumors compares nonregistered images and 5 registration cost functions: Hellinger, mutual information, normalized mutual information, correlation ratio, and local Pearson correlation. To adjudicate the accuracy of coregistration, the authors edge-enhanced echo-planar maps and rated them for alignment with structural anatomy. The local Pearson correlation is a special-purpose cost function specifically designed for T2*–T1 coregistration and should be more widely incorporated into software tools as a better method for coregistration in clinical fMRI.
Raz, E.
- FELLOWS' JOURNAL CLUBNeurointerventionYou have accessToward Better Understanding of Flow Diversion in Bifurcation AneurysmsM. Shapiro, A. Shapiro, E. Raz, T. Becske, H. Riina and P.K. NelsonAmerican Journal of Neuroradiology December 2018, 39 (12) 2278-2283; DOI: https://doi.org/10.3174/ajnr.A5874
Fundamental electric and fluid dynamics principles were applied to generate equations describing the relationships between changes in flow and the degree of vessel coverage in settings of variable collateral support to the jailed territory. The authors studied a simplified hypothetic system with minimum assumptions to generate the most conservative outcomes. Up to 30% metal coverage of any branch territory is very likely to be well-tolerated regardless of device or artery size or the availability of immediate collateral support, provided that no acute thrombus forms to further reduce jailed territory perfusion.
Reinshagen, K.L.
- Head and Neck ImagingOpen AccessRetrospective Review of Otic Capsule Contour and Thickness in Patients with Otosclerosis and Individuals with Normal Hearing on CTN. Sanghan, T. Chansakul, E.D. Kozin, A.F. Juliano, H.D. Curtin and K.L. ReinshagenAmerican Journal of Neuroradiology December 2018, 39 (12) 2350-2355; DOI: https://doi.org/10.3174/ajnr.A5892
Riedel, C.H.
- LetterYou have accessReply:N. Larsen, O. Jansen, C.H. Riedel, C. von der Brelie and C. FlühAmerican Journal of Neuroradiology December 2018, 39 (12) E131; DOI: https://doi.org/10.3174/ajnr.A5860
Rigamonti, D.
- FELLOWS' JOURNAL CLUBAdult BrainYou have accessDoes Phase-Contrast Imaging through the Cerebral Aqueduct Predict the Outcome of Lumbar CSF Drainage or Shunt Surgery in Patients with Suspected Adult Hydrocephalus?A.M. Blitz, J. Shin, O. Balédent, G. Pagé, L.W. Bonham, D.A. Herzka, A.R Moghekar and D. RigamontiAmerican Journal of Neuroradiology December 2018, 39 (12) 2224-2230; DOI: https://doi.org/10.3174/ajnr.A5857
In this retrospective study, the phase-contrast MR imaging of 185 patients with suspected chronic adult hydrocephalus was evaluated using the CSF Flow software package. Decision-making for shunt placement was performed in this cohort on the basis of clinical assessment alone without the availability of quantitative phase-contrast MRI results. The authors evaluated the response to lumbar puncture or lumbar drainage and shunt surgery using quantitative tests such as the Tinetti Test, the Timed Up and Go, and the Mini-Mental State Examination and qualitative measures of gait, urinary, and cognitive symptom improvement before and after lumbar puncture/lumbar drainage and shunt surgery. This study suggests that the results of phase-contrast MR imaging through the cerebral aqueduct alone should not be used to select patients for diagnostic or therapeutic CSF diversion.
- Adult BrainYou have accessNatural History of Endoscopic Third Ventriculostomy in Adults: Serial Evaluation with High-Resolution CISSM. Trelles, A.K. Ahmed, C.H. Mitchell, I. Josue-Torres, D. Rigamonti and A.M. BlitzAmerican Journal of Neuroradiology December 2018, 39 (12) 2231-2236; DOI: https://doi.org/10.3174/ajnr.A5861
Riina, H.
- FELLOWS' JOURNAL CLUBNeurointerventionYou have accessToward Better Understanding of Flow Diversion in Bifurcation AneurysmsM. Shapiro, A. Shapiro, E. Raz, T. Becske, H. Riina and P.K. NelsonAmerican Journal of Neuroradiology December 2018, 39 (12) 2278-2283; DOI: https://doi.org/10.3174/ajnr.A5874
Fundamental electric and fluid dynamics principles were applied to generate equations describing the relationships between changes in flow and the degree of vessel coverage in settings of variable collateral support to the jailed territory. The authors studied a simplified hypothetic system with minimum assumptions to generate the most conservative outcomes. Up to 30% metal coverage of any branch territory is very likely to be well-tolerated regardless of device or artery size or the availability of immediate collateral support, provided that no acute thrombus forms to further reduce jailed territory perfusion.
Ros, P.
- Adult BrainYou have accessDifferentiation of Hemorrhage from Iodine Using Spectral Detector CT: A Phantom StudyS. Van Hedent, N. Große Hokamp, K.R. Laukamp, N. Buls, R. Kessner, B. Rose, P. Ros and D. JordanAmerican Journal of Neuroradiology December 2018, 39 (12) 2205-2210; DOI: https://doi.org/10.3174/ajnr.A5872
Rose, B.
- Adult BrainYou have accessDifferentiation of Hemorrhage from Iodine Using Spectral Detector CT: A Phantom StudyS. Van Hedent, N. Große Hokamp, K.R. Laukamp, N. Buls, R. Kessner, B. Rose, P. Ros and D. JordanAmerican Journal of Neuroradiology December 2018, 39 (12) 2205-2210; DOI: https://doi.org/10.3174/ajnr.A5872
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