… few level C studies with early CT scanners 25,26 and practical experience. Two prospective
and randomized level … Recent evidence (level B) suggests that although the presence of old …

CT perfusion (CTP) is a functional imaging technique that provides important information
about capillary-level hemodynamics of the brain parenchyma and is a natural complement to …

… This analysis will incorporate patient characteristics at the time of scan acquisition, such
as heart rate, blood pressure, glucose level, and hematocrit, which may have a significant …

PURPOSE: To evaluate acute stroke with conventional, multisection diffusion-weighted (DW),
and hemodynamically weighted (HW) magnetic resonance (MR) imaging. MATERIALS …

… A and B, Axial contrast-enhanced T1-weighted (A) and rCBV (B) images through the level
of the lateral ventricles demonstrate an enhancing mass. There is elevated blood volume …

Background and Purpose— Acute ischemic stroke due to large vessel occlusion (LVO)—vertebral,
basilar, carotid terminus, middle and anterior cerebral arteries—likely portends a …

… Angiographic occlusions, with a 1 to 5 level of certainty rating, were recorded for 27 defined
vessel segments. Lesions identified as subtotal or total occlusion of Level 4 and 5 certainty (…

Background: Rapid and easy clinical assessments for volumes of infarction and perfusion
mismatch are needed. We tested whether simple geometric models generated accurate …

… , variable window width and level review settings in computed … center level and window
width settings of 20 and 80 HU and with variable soft-copy settings initially centered at a level of …

… methodology 21 by using case-level labels aggregated from slice-level labels, as well as …
of 100 test slices, without the need for tedious and costly manual pixel-level segmentation. …