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논문 기본 정보

자료유형
학술저널
저자정보
Choo, Ki-Seok (Departments of Diagnostic Radiology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine) Lee, Tae-Hong (Departments of Diagnostic Radiology, Pusan National University Hospital, Pusan National University School of Medicine) Choi, Chang-Hwa (Departments of Neurosurgery, Pusan National University Hospital, Pusan National University School of Medicine) Park, Kyung-Pil (Departments of Neurology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine) Kim, Chang-Won (Departments of Diagnostic Radiology, Pusan National University Hospital, Pusan National University School of Medicine) Kim, Suk (Departments of Diagnostic Radiology, Pusan National University Hospital, Pusan National University School of Medicine)
저널정보
대한신경외과학회 대한신경외과학회지 대한신경외과학회지 제45권 제5호
발행연도
2009.1
수록면
284 - 288 (5page)

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Objective : Our retrospective study aimed to determine whether 16-slice computerized tomography (CT) angiography optimized sharp kernel is suitable for the evaluation of visibility, luminal patency and re-stenosis of intracranial stents in comparison with conventional angiography. Methods : Fifteen patients with symptomatic intracranial stenotic lesions underwent balloon expandable stent deployment of these lesions (10 middle cerebral arteries, 2 intracranial vertebral arteries, and 3 intracranial internal carotid arteries). CT angiography follow-up ranged from 6 to 15 months (mean follow-up, 8 months) after implantation of intracranial stents and conventional angiography was confirmed within 2 days. Curved multiplanar reformations with maximal intensity projection (MIP) with optimal window settings for assessment of lumen of intracranial stents were evaluated for visible lumen diameter, stent patency (contrast distal to the stent as an indirect sign), and re-stenosis by two experienced radiologists who blinded to the reports from the conventional angiography. Results : All of stents deployed into symptomatic stenotic lesions. All stents were classified as patent and no re-stenosis, which was correlated with results of conventional angiography. Parts of the stent lumen could be visualized in all cases. On average, 57% of the stent lumen diameter was visible using optimized sharp kernel. Significant improvement of lumen visualization (22%, p<0.01) was observed using the optimized sharp kernel compared with the standard sharp kernel. Inter-observer agreements on the measurement of lumen diameter and density were judged as good, respectively (p<0.05). Conclusion : Sixteen-slice CT using the optimized sharp kernel may provide a useful information for evaluation of lumen diameter patency, and re-stenosis of intracranial stents.

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