title: Influence of age on quantitative sacro-iliac joint imaging.
abstract: Computer processing of sacro-iliac (S-I) joint scintigrams represents a significant contribution to the diagnostic workup of this area. The S-I index is calculated as the ratio between the total number of counts in the region of interest placed on the S-I joint and an identical region placed on the sacrum. S-I indexes were determined in a group of 70 patients aged 13-77 years to establish the influence of age on normal index values. Our results indicate that S-I index values are age dependent. The study was performed 2 h post-injection but the possibility exists that this is not the optimal time interval.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D003201:Computers; D004164:Diphosphonates; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D012446:Sacroiliac Joint / Q000000981:diagnostic imaging*; D013667:Technetium; D013669:Technetium Tc 99m Medronate
chemical_list: D004164:Diphosphonates; D013667:Technetium; D013669:Technetium Tc 99m Medronate