Sacroiliac scintiscanning.
D006680:HLA Antigens / Q000235:genetics; D006801:Humans; D011877:Radionuclide Imaging; D012446:Sacroiliac Joint / Q000000981:diagnostic imaging*; D013167:Spondylitis, Ankylosing / Q000175:diagnosis / Q000000981:diagnostic imaging
D006680:HLA Antigens