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논문 기본 정보

자료유형
학술저널
저자정보
이원재 (서울대학교 의과대학 신경외과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제25권 제6호
발행연도
1989.1
수록면
857 - 866 (10page)

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MR images obtained in 40 patients with surfically proven lumbar herniated intervertebral disc(HIVD) and /or spinal stenosis were retrospectively analysed and compared with CT scans in order to evaluate the MR findings of HVD and spinal stenosis and to assess the diagnostic accuracy of MR. The MR imaging was performed on a 2.0T superconducting unit using multislice spin echo(SE) and gradient echo(FE) techniques. The results were as follows: 1. The texture of vertebral body with spinal stenosis had the tendency to be more heteroge-noeou than that with HIVD. 2. The signal intensity of the diseased disc was isointense relative to normal disc in 81%(60/74) and the remainder (19%) was hypointense on both T1 weighted SE and GE images. There was no significant difference in signal intensity among HIVD, HIVD com-bined with spinal stenosis and spinal stenosis groups but there was the tendency of lower signal intensity of the diseased disc in patients with severe degenerative change of spine in both T1 weighted SE image and GE image. 3. The diagnostic accuracy of MR was 92% which was similar to that of CT. 4. T1 weighted SE image appears superior to GE image in ecaluation of most of the structural differentiation but as for differentiation between lumina and ligamentum flavum and for the vacuum phenomenon GE image seems to be better than T1 weighted SE image. In conclusion MR appears to be better than CT as a initial imaging modality in evaluation of the patients with suspected lumbar spinal stenosis or HIVD because MR has the capabil-ity of demonstrating rupture of anulus fibrosus in sagittal plane.

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