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논문 기본 정보

자료유형
학술저널
저자정보
이범하 (경희대학교 의과대학 진단방사선과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제39권 제5호
발행연도
1998.1
수록면
831 - 837 (7page)

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Purpose: To determine the nature of large deep -seated infarcts without cortical infarct in patients with steno-occlusive disease of the proximal middle cerebral artery (MCA) using magnetic resonance images(MRI) angiography. Materials and Methods: By means of MRI and MR angiography(MRA), we examined 24 patients with large deep cerebral infarctions(>3cm in size) involving the basal ganglia, corona radiata and/or centrum semiovale, as well as steno-occlusive lesion of the proximal MCA. According to location, infarctions were classified into five groups, as follows: Group 1: basal ganlgia and corona radiata; 2: basal ganglia, corona radiata and centrum semiovale; 3: corona radiata and centrum semiovale; 4: corona radiata; 5: basal ganglia only. We evaluated the topography of the lesions and correlated the results with the findings of angiography (all 24 MRA; the 13:conventional angiography). Involvement of the head of the caudate nucleus and the internal capsule were also evaluated. Results : Fifteen of 24 cases(63%) were assigned to group 1 (4 proximal MCA(M1) occlusion and 11stenosis), and five of 24 (21%) with M1 occlusions to group 2. Group 3 comprised only one case with M1 occlusion. Two cases with both occlusion and stenosis were included in group 4, and only one case-with M1 stenosis-in group5. Infarctions at the caudate nucleus were seen in five cases, and at the internal capsule in two. On conventional angiography (13 cases) cortical branches of the MCA were delineated through the leptomeningeal collaterals of anterior or posterior cerebral arteries. Conclusion : Most large deep cerebral infarctions found in proximal MCA diseases are thought to extend cephalad to the corona radiata. When large deep-seated infarctions with proximal MCA occlusion is observed more frequently than stenosis.

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