Analysis of the accuracy of judging the degree of calcification of costal cartilage by multislice spiral CT
Objective To investigate the basic characteristics of female costal cartilage calcification,and to study the accuracy of multi-slice spiral CT and three-dimensional reconstruction(3D CT)in the diagnosis of costal cartilage calcification.Methods March 2023 to December 2023,226 patients with osteocondral rhinoplasty admitted to Deparement of Plastic Surgery,Dalian University Affili-ated Xinhua Hospital were retrospectively analyzed.The imaging data of female patients who received 3D CT before surgery were analyzed.All of them were 3D CT scans(1.2 mm thick).The incidence,degree and type of calcification of the 6th and 7th rib cartilage on both sides were observed and compared with the extracted rib cartilage.Results Of 226 patients,112 cases had different degrees of calcification,calcification rate was 49.6%.Among 904 rib cartilages(bilateral 6th and 7th rib cartilages)in 226 patients,379 rib cartilages were calcified by 3D CT,including 84 peripheral type(9.3%),14 central type(1.6%),258 scattered type(28.5%),and 23 engorge type(2.5%).In the de-gree of calcification shown by 3D CT,There were 319 cartilages(35.3%)with mild calcification(calcification rate＜50%),37 cartilages(4.1%)withmoderatecalcification(50%～85%),and23cartilages(2.5%)withseverecalcification(85%～100%).Calcification was determined in 39 patients before the operation and confirmed in 39 patients during the operation.5 cases with severe calcification were excluded.The other 182 cases had no calcification at the rib site,and only 3 cases had"punctate"calcification.The sensitivity and specificity of 3D CT were 92.9%and 100%,and the positive predictive value and negative predictive value were 100%and 98.4%,respectively.Conclusion The calcification rate of the costal cartilage increases with age,but age should not be used as an indicator of costal cartilage calcification.Among the calcification types of female costal cartilage,the main manifestations are scattered and peripheral type calcification.3D CT is accurate in determining the location of calcification of costal cartilage before operation.
NETL
NSTL
万方数据
