CT Perfusion Mean Transit Time Maps Optimally Distinguish Benign Oligemia from True “At-Risk” Ischemic Penumbra, but Thresholds Vary by Postprocessing Technique - Kamalian, Shervin; Kamalian, Shahmir; Konstas, A.A.; Maas, M.B.; Payabvash, S.; Pomerantz, S.R.; Schaefer, P.W.; Furie, K.L.; González, R.G.; Lev, M.H. (American journal of neuroradiology : AJNR, 2012)
Keywords: Aged; Aged, 80 and over; Algorithms; Biological and medical sciences; Brain; Brain Ischemia - complications; Brain Ischemia - diagnostic imaging; Female; Humans; Investigative techniques, diagnostic techniques (general aspects); Male; Medical sciences; Middle Aged; Miscellaneous. Technology; Nervous system; Perfusion Imaging - methods; Radiodiagnosis. Nmr imagery. Nmr spectrometry; Radiographic Image Enhancement - methods; Radiographic Image Interpretation, Computer-Assisted - methods; Reproducibility of Results; Retrospective Studies; Sensitivity and Specificity; Stroke - complications; Stroke - diagnostic imaging; Tomography, X-Ray Computed - methods; Cartography; Nervous system diseases; Radiodiagnosis; Transit time; Risk factor; Computerized axial tomography; Technique; Ischemic penumbra