急性缺血性脑卒中的三维血流成像（英文）.ppt

Comprehensive Imaging in 15 Minutes Perfusion CT … Images from PCT: MIP CBF CBV TTP Calculating 3D-PBV Images Materials and Methods Twenty-five patients (7 women, 18 men; mean age 59 years; range 42-77 years) suffered from acute ischemic stroke of the anterior circulation were studied within 6h after onset of symptoms NECT, CTA and CTP were performed within an average time of 2.8 hours (range 1-6 hours) after onset of symptoms Intravenous or intra-arterial thrombolytic therapy was performed in 11 of 25 patients Follow-up CT and MRI examinations were done at 2 to 7 days for the depiction of definite infarction Results NECT: signs of ischemia were demonstrated in 13 of 25 acute stroke patients CTP: CBF, CBV, and TTP demonstrated perfusion deficits in 21 patients CBF, CBV, and TTP demonstrated suspected perfusion deficits in 2 patients Only TTP demonstrated perfusion deficits in 2 of 25 patients 3D-PBV: demonstrated perfusion deficits in all of the 25 acute stroke patients Results CTP: lesion volume significantly correlated with the follow-up CT (R=0.776/P0.001 for CBF; R=0.723/ P0.001 for CBV; R=0.629/P=0.001 for TTP) PBV: lesion volume significantly correlated with the follow-up CT (R=0.837, P0.001) Results Conclusions 3D PBV can improve detection rate of ischemia by avoiding lesion omitting and assess the full extent of ischemia which correlates well with follow-up plain CT 3D PBV requires no additional scan or contrast injection and can be performed in a short period of time. The integration of 3D-PBV with multimodal CT (NECT, CTP and CTA) can add the diagnostic value in acute ischemic stroke * * 3D Blood Volume Imaging Acute Ischemic Stroke Kuncheng Li M.D.,Ph.D. Medical Imaging CenterDepartment of Radiology Xuanwu Hospital Capital Medical UniversityBeijing 100053 China Non-enhanced CT (NECT) : could exclude hemorrhage and indicate earl