@article{oai:niigata-u.repo.nii.ac.jp:00019302,
 author = {大西, 洋司 and 佐藤, 晶 and 小野田, 倉三 and 山崎, 元義 and 小宅, 睦郎},
 issue = {6},
 journal = {新潟医学会雑誌, 新潟医学会雑誌},
 month = {Jun},
 note = {To determine the accuracy of magnetic resonance angiography (MRA) in detecting the stenosis of the main trunk of the intracranial major arteries, we compared the results of MRA and conventional angiography (CA) . To 36 patients with ischemic cerebrovascular disease, we performed both MRA and CA. MRA was performed on a 1.5T Shimazu SMT-150X. We divided the findings of the main trunk of the intracranial major arteries into four categories based on stenosis; 0～15%, normal; 16～49%, mild; 50～99%, severe; and totally occluded. Three neurologists read each angiograms independently without clinical data, and assessed the correlation of each findings. Basilar and vertebral arteries were excluded due to inadequate imaging by MRA. 59 internal carotid arteries (ICA), 55 anterior cerebral arteries (ACA), 55 middle cerebral arteries (MCA), and 40 posterior cerebral arteries (PCA) were examined. The entire accuracy was 90.4 % (209 vessels), the overestimation 8.6 % (18 vessels), and the underestimation 1% (2 vessels). The accuracy of MRA in each categories was 95% in normal, 44% in mild, 82% in severe, and 100 % in total occlusion. The accuracy in each arteries was 88% in ICA, 91% in ACA, 89% in MCA, and 95% in PCA. Our study suggest that MRA is useful for the finding the state of the main trunk of the intracranial major arteries, but we have to be careful with overestimation.},
 pages = {411--414},
 title = {2)脳梗塞のMRI : Conventional angiographyとの比較(シンポジウム 画像診断の最近の進歩と問題点, 第490回新潟医学会)},
 volume = {108},
 year = {1994}
}