[Photographic angle in venography].
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000000981:diagnostic imaging*; D008297:Male; D008722:Methods; D008875:Middle Aged; D010690:Phlebography; D013168:Spondylolisthesis / Q000000981:diagnostic imaging*