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논문 기본 정보

자료유형
학술저널
저자정보
정경재 (삼성의료원 강북삼성병원 진단방사선과)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제34권 제2호
발행연도
1996.1
수록면
179 - 184 (6page)

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Purpose : To compare MR myelography(MRM) using heavily T2 weighted fast spin echo(FSE) with conventionalmyelography in the evaluation of lumbar degenerative disc diseases. Materials and Methods : A total of 50 patientswith lumbar degenerative disc diseases underwent both MRM and conventional myelography. A 1.5 T Signa MR systemwas used. For MRM, heavily T2 weighted FSE pulse sequences were performed in sagittal, coronal and both obliqueplanes. The images of MRM and conventional myelography were analyzed retrospectively and compared, focusing on thepattern of compression of the thecal sac and nerve roots. Results : MRM yielded comparable images to conventionalmyelography in68% (34/50). MRM was superior to conventional myelography in 11 cases (22%), and the oppositeresulted in 5 cases(10%). MRM could visualize the spinal canal below the level of complete block in 6 patients,provided better contrast in the cases of dural ectasia in 3 cases and better delineation of individual nerve rootswith source images in 1 case. Additional informations such as incidental retroperitoneal vascular malformation andextravasation of the CSF could be obtained by MRM in 1 case each. Disadvantages of MRM were poor contrast in thecases of multiple spinal stenosis, obscuration of the nerve roots by engorged paraspinal vessels, and occassionaldifficulty in defining the levels due to vanishment of the bony background image. Conclusion : MRM is a safe,noninvasive, nonionizing modality which in very effective in evaluating the lumbosacral disc disease. Use ofFSE-MRM in addition to the routine MR imaging could be very helpful not only for better evaluation of nerve rootsbut also for the additional informations.

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