Authors: Hatice Tuba Sanal Sedat Yilmaz Umut Kalyoncu Muhammet Cinar Ismail Simsek Hakan Erdem Salih Pay Ayhan Dinc Cem Tayfun
Publish Date: 2012/06/28
Volume: 42, Issue: 2, Pages: 289-293
Abstract
The study included 21 patients with AS All patients were examined with STIR FST1/Gd and DWI b = 0600 A total of 54 hyperintense lesions on STIR were noted in their sacroiliac joints divided into four quadrants CNRs were calculated for all of the sequences above A second group of patients n = 7 with normal sacroiliac joints SIJs served as controls A total of 56 CNR measurements from apparently normal subchondral bone marrow in this control group were done as well The differences between scores were tested for significance SPSS version 170 using Wilcoxons test in which p values lower than 001 were considered statistically significantIn the first group with sacroiliitis mean CNRs for STIR FST1/Gd DWI were 3297 3016 and 2447 respectively Mean CNRs in the second group with normal SIJs were calculated as 352 299 and 396 respectively There was a statistically significant difference between the CNR measurements of the first and the second group p = 0000Hyperintense lesions on STIR were depicted as active in the first group Except for four lesions that were not included into the study all of these hyperintense lesions were enhanced after contrast media administration All of the active lesions were observed on DWI as well at b = 600 No statistically significant difference between CNRs of contrast enhanced images and DWI and of contrast enhanced images and fluid sensitive sequences were found in the first group with sacroiliitis p 001The CNRs are highest on STIR followed by contrast enhanced images and DWIs In terms of DWI and contrast enhanced images there is no statistically significant difference between these two Hence contrast enhanced imaging can be replaced by DWI for visual analysis of active sacroiliitis which is easy to apply without adverse affects of contrast media
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