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논문 기본 정보

자료유형
학술저널
저자정보
차병훈 (포항선린병원 진단방사선과)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제34권 제4호
발행연도
1996.1
수록면
451 - 456 (6page)

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Purpose : To evaluate the relationship between the direction of herniated disc and pressure effect on nerve root and dural sac, as seen on MRI. Materials and Methods : We retrospectively reviewed lumbar spine MR images of122 cases of lumbar disk herniation in 75 patients MRI findings were analyzed with regard to the relationship between the direction of the herniated disc and pressure effect on nerve root and dural sac. pressure effect on nerve root and dural sac was arbitralily divided into three types. Type I was defined as zero or minimal compression of nerve roots or thecal sac by the herniated disc ; type II was defined as mild to moderate compression, while III was defined as severe compression or displacement of nerve roots and/or thecal sac. Results : Of the 122 cases seen in these 75 patients, 97(80%) were observed at L4-5 and L5-S1. The central type(71cases ; 58%) was more frequently observed than the posterolateral type(48cases ; 40%) or lateral type(3cases ; 2%). The totals of types I, II, and III were 44(36%), 43(35%), and 35 cases(29%), repectively. Seventy-seven %(34/44) of type I and 65%(28/43) of type II were of the central type but for type III, the corresponding figure was only 26%(9/35). Conclusions : On MR imaging, most of lumbar disk herniations were observed at L4-5 and L5-S1, with a predominance of the central type rather than the posterolateral one. Most of the central types were either type I or type II.

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