TY - JOUR
T1 - MR perfusion studies of brain for patients with unilateral carotid stenosis or occlusion
T2 - Evaluation of maps of "time to peak" and "percentage of baseline at peak"
AU - Teng, Michael Mu Huo
AU - Cheng, Hui Cheng
AU - Kao, Yi Hsuan
AU - Hsu, Li Chi
AU - Yeh, Tzu Chen
AU - Hung, Chung Shiou
AU - Wong, Wen Jang
AU - Hu, Han Hwa
AU - Chiang, Jen Huey
AU - Chang, Cheng Yen
PY - 2001/2/6
Y1 - 2001/2/6
N2 - Maps of "time to peak" (TTP) and "percentage of baseline at peak" (PBP) were compared with maps of conventional brain perfusion parameters, namely, mean transit time (MTT) and relative cerebral blood volume (rCBV). We performed MR perfusion studies in 11 patients. All of them had occlusion or high-grade stenosis of the unilateral carotid artery. Three areas of old infarct, 4 areas of new infarct, and 10 areas of brain without infarct were evaluated specifically. In all these cases, the TTP maps appeared similar to the MTT maps. They showed increases, normal values, or decreases at the same time in all areas evaluated. Most areas of abnormally decreased CBV had increased signal in PBP maps. In conclusion, the TTP map provided the same qualitative information as MTT. PBP seemed correlated inversely to CBV and was less sensitive in demonstrating abnormality.
AB - Maps of "time to peak" (TTP) and "percentage of baseline at peak" (PBP) were compared with maps of conventional brain perfusion parameters, namely, mean transit time (MTT) and relative cerebral blood volume (rCBV). We performed MR perfusion studies in 11 patients. All of them had occlusion or high-grade stenosis of the unilateral carotid artery. Three areas of old infarct, 4 areas of new infarct, and 10 areas of brain without infarct were evaluated specifically. In all these cases, the TTP maps appeared similar to the MTT maps. They showed increases, normal values, or decreases at the same time in all areas evaluated. Most areas of abnormally decreased CBV had increased signal in PBP maps. In conclusion, the TTP map provided the same qualitative information as MTT. PBP seemed correlated inversely to CBV and was less sensitive in demonstrating abnormality.
KW - Cerebral blood flow
KW - Cerebral blood volume
KW - Magnetic resonance imaging
KW - Magnetic resonance perfusion
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U2 - 10.1097/00004728-200101000-00022
DO - 10.1097/00004728-200101000-00022
M3 - Article
C2 - 11176306
AN - SCOPUS:0035139653
SN - 0363-8715
VL - 25
SP - 121
EP - 125
JO - Journal of Computer Assisted Tomography
JF - Journal of Computer Assisted Tomography
IS - 1
ER -