The value of single-source spectrum CT in differentiating of calcification and tophus
10.3760/cma.j.issn.1008-6706.2016.05.010
- VernacularTitle:单源能谱 CT 鉴别骨关节旁增生钙化与痛风石的价值
- Author:
Min LUO
;
Sensen YAN
;
Xiuya CEN
;
Yuantong GAO
;
Qing JIA
- Publication Type:Journal Article
- Keywords:
Tomography,X -ray computed;
Urate crystals;
Gout
- From:
Chinese Journal of Primary Medicine and Pharmacy
2016;23(5):679-682
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the advantage of single -source spectrum CT in differentiating of calcifi-cation and tophus.Methods 146 cases of clinical suspected patients with gout pain were scaned by single -source spectrum CT,observed the adjacent to the bone and joint hyperplasia and showing characteristics of gout stone,coun-ted quantity,size and position of the sedimentary tophus.Diagnosed by American rheumatism association standard as the gold standard,computed the sensitivity,specific degrees and accuracy of showing tophus of single -source spec-trum CT and conventional CT,and evaluated the advantage of differentiating adjacent to the bone and joint hyperplasia and gout stone of single -source spectrum CT.Results Diagnosis of gout in 105 cases.Scaned 349 joints,positive in 341 of them,The first plantar toe joint involvement was obvious[118,34.60%(118/341)];The result showed that the sensitivities of the tophus,specific and accurate rate of the conventional CT were 63.80%(67 /105),65.85%(27 /41),64.38%(94 /146),which of single -source spectrum CT were 96.19%(101 /105),87.80%(36 /41), 93.84%(137/146),the differences of sensitivity,specificity and accuracy between the two methods were statistical significance(χ2 =34.42,555,38.34,all P <0.05).Conclusion Single -source spectrum CT in gout stone adjacent to the bone and joint has higher sensitivity and accuracy,specific degree,it is higher than conventional CT and provide a new noninvasive imaging technique for the identification of the peripheral bone and joint of the bone.
