Nerve root cut-off on metrizamide-enhanced computerized tomography.
The "wink" sign of nerve root cut-off seen on metrizamide-enhanced computerized tomography correlates well with compression of a lumbar nerve by a herniated disk. Seven of 46 patients had normal or equivocal myelograms, but had definite nerve root cut-off on metrizamide-enhanced CT scan. All seven patients were found to have a herniated lumbar disk at operation or a diskogram positive for herniation at the time of chymopapain injection. The wink sign is an additional objective finding that can be used in assessing the patient with sciatica.
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D000328:Adult; D001265:Athletic Injuries / Q000000981:diagnostic imaging; D002917:Chymopapain / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D008159:Lumbar Vertebrae / Q000601:surgery; D008161:Lumbosacral Region; D008297:Male; D008793:Metrizamide; D008875:Middle Aged; D009192:Myelography; D009408:Nerve Compression Syndromes / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery; D011856:Radiographic Image Enhancement; D013126:Spinal Nerve Roots / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods*
D002917:Chymopapain; D008793:Metrizamide