|Quantitative Measurement of Oxygen Extraction Fraction by MRI in Patients with Cerebrovascular Disease: Pre- and Post-Surgery|
|Xie, Sheng1; Xia, Jiangxi2; Duan, Hongzhou3; Fu, Lei1; Mo, Dapeng4; Zhang, Xiaodong2|
|关键词||Oxygen Extraction Fraction (Oef) Cerebral Blood Flow (Cbf) Magnetic Resonance Imaging (Mri) Stent Superficial Temporal Artery-middle Cerebral Artery (Sta-mca) Bypass|
|WOS标题词||Science & Technology|
|类目[WOS]||Clinical Neurology ; Surgery|
|研究领域[WOS]||Neurosciences & Neurology ; Surgery|
|关键词[WOS]||POSITRON-EMISSION-TOMOGRAPHY ; MIDDLE CEREBRAL-ARTERY ; EXTRACRANIAL-INTRACRANIAL BYPASS ; DETECTING MISERY PERFUSION ; CAROTID OCCLUSION ; BLOOD-FLOW ; PET ; ACETAZOLAMIDE ; HEMODYNAMICS ; TERRITORIES|
AIM: We aimed to evaluate cerebral hemodynamic status of preoperative and postoperative revascularization treatment by oxygen extraction fraction (OEF)-magnetic resonance imaging (MRI) in patients with severe cerebrovascular stenosis or occlusive disease.
MATERIAL and METHODS: This study enrolled 9 symptomatic patients with severe cerebrovascular disease and 9 age-matched normal volunteers. Cerebral blood flow (CBF) and OEF were determined in all subjects by functional MRI. Brain regions with elevated OEF above normal range were defined in the patients preoperatively. The values of pre- and postoperative OEF in these regions were compared.
RESULTS: A total of 16 regions of interest (ROIs) had elevated OEF before the vascular surgery, with relative CBF (rCBF) values ranging from 0.2 to 1.0. OEF decreased to normal range in 15 ROls postoperatively, which indicated hemodynamic improvement in these regions. The OEF value of the high-OEF group (preoperative OEF value ranged from 0.365 to 0.400) had a significant decrease compared with those of the low-OEF group (preoperative OEF value ranged from 0.350 to 0.365), which showed an a statistical difference (p = 0.001).
CONCLUSION: OEF was elevated in patients with severe ischemic cerebrovascular disease, and decreased after successful revascularization. OEF-MRI can provide quantitative information for evaluating the hemodynamic status and selecting the candidates suitable for revascularization.
|作者单位||1.China Japan Friendship Hosp, Dept Radiol, Beijing, Peoples R China|
2.Peking Univ, Hosp 1, Dept Radiol, Beijing 100871, Peoples R China
3.Peking Univ, Hosp 1, Dept Neurosurg, Beijing 100871, Peoples R China
4.Beijing Tiantan Hosp, Dept Emergency Intervent Neuroradiol, Beijing, Peoples R China
|Xie, Sheng,Xia, Jiangxi,Duan, Hongzhou,et al. Quantitative Measurement of Oxygen Extraction Fraction by MRI in Patients with Cerebrovascular Disease: Pre- and Post-Surgery[J]. TURKISH NEUROSURGERY,2015,25(1):21-28.|
|APA||Xie, Sheng,Xia, Jiangxi,Duan, Hongzhou,Fu, Lei,Mo, Dapeng,&Zhang, Xiaodong.(2015).Quantitative Measurement of Oxygen Extraction Fraction by MRI in Patients with Cerebrovascular Disease: Pre- and Post-Surgery.TURKISH NEUROSURGERY,25(1),21-28.|
|MLA||Xie, Sheng,et al."Quantitative Measurement of Oxygen Extraction Fraction by MRI in Patients with Cerebrovascular Disease: Pre- and Post-Surgery".TURKISH NEUROSURGERY 25.1(2015):21-28.|