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KMID : 0359819940230091028
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Journal of Korean Neurosurgical Society
1994 Volume.23 No. 9 p.1028 ~ p.1037
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Diagnostic Value of Three-Dimesional Computed Tomographic Angiography(3-DCTA) in Intracranial Aneurysm
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최일승
김영수/고용/오성훈/오석전/김남규/김광명/이승로
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Abstract
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The authors have evaluated the efficacy of three dimensional computed tomographic angiography (3-DCTA) in diagnosing intracranial aneurysm. This literature studied thirty five patients harboring forty intracranial aneurysms using dynamic CT scan
with
intravenous contrast enhancement. After injection of 2mg/kg of nonionic contrast material (RayvistR) intravenously, rapid dynamic CT scanning with thin section was performed. Three dimensional reconstruction was performed using the GE 9800 HR
surface-rendering method with a threshold of about 100 Hounsfield units (HU). The authors comparatively analysed this 3-DCTA with conventional cerebral angiography to determine aneurysmal detection, shape, direction, and its relationships to
surrounding
vessels. While 3-DCTA clearly detected 38 aneurysms, conventional angiography did 37 ones. There was no significant difference between 3-DCTA and conventional angiography in domonstrating aneurysmal direction, but 3-DCTA was superior to
conventional
angiography in demonstrating aneurysmal shape, its neck and surrounding vascular structures. 3-DCTA showed deliberate anatomy of aneurysm and adjacent vessels through 3 dimensional image, and its operative view is helpful in surgical planning.
3-DCTA
might be expected to substitute for conventional angiography in the near future.
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KEYWORD
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