磁共振弥散加权成像技术及多层螺旋CT对少见类型膀胱炎的诊断及临床应用

The diagnosis and clinical application of magnetic resonance DWI and MSCT in rare types of cystitis

目的分析磁共振弥散加权成像(DWI)技术及多层螺旋CT(MSCT)在少见类型膀胱炎诊断中的准确率、灵敏度、特异度。方法选定河南省扶沟县人民医院2020年5月至2022年5月接诊的80例高度疑似少见类型膀胱炎患者,分别给予DWI、MSCT诊断,将膀胱镜检查结果作为本次研究的金标准,对比DWI、MSCT诊断准确率、灵敏度、特异度,Kappa检验DWI、MSCT与膀胱镜的一致性,并分析少见类型膀胱炎DWI、MSCT影像学特点。结果膀胱镜确诊38例少见类型膀胱炎,其中16例腺性膀胱炎、22例气肿性膀胱炎。DWI确诊34例少见类型膀胱炎,其中14例腺性膀胱炎、20例气肿性膀胱炎。MSCT确诊21例少见类型膀胱炎,其中8例腺性膀胱炎、13例气肿性膀胱炎。DWI诊断准确率(90.0%)、灵敏度(84.2%)、特异度(95.2%)均高于MSCT(58.8%、34.2%、81.0%),差异均具有统计学意义(P<0.05),Kappa检验DWI与膀胱镜的一致性较好(Kappa值=0.796),MSCT与膀胱镜的一致性一般(Kappa值=0.586),差异均具有统计学意义(P<0.05)。结论DWI技术可提高少见类型膀胱炎诊断准确率、灵敏度、特异度,同时可提供不同序列影像学征象,值得参考、推广。

Objective To analyze the accuracy,sensitivity and specificity of magnetic resonance diffusion-weighted imaging(DWI)and multi-slice spiral CT(MSCT)in the diagnosis of rare types of cystitis.Methods A total of 80 patients with highly suspected rare types of cystitis admitted to Fugou County People′s Hospital in Henan Province from May 2020 to May 2022 were selected and diagnosed by DWI and MSCT respectively.Cystoscopy results were used as the gold standard in this study,the diagnostic accuracy,sensitivity and specificity of DWI and MSCT were compared.Kappa test was used to detect the consistency of DWI,MSCT and cystoscopy,and analyzes the imaging characteristics of DWI and MSCT for rare types of cystitis.Results Cystoscopy confirmed 38 cases with rare cystitis,including 16 cases with glandular cystitis and 22 cases with emphysematous cystitis.DWI confirmed 34 cases with rare cystitis,including 14 cases with glandular cystitis and 20 cases with emphysematous cystitis.MSCT confirmed 21 cases with rare cystitis,including 8 cases with glandular cystitis and 13 cases with emphysematous cystitis.The diagnostic accuracy(90.0%),sensitivity(84.2%),and specificity(95.2%)of DWI were higher than those of MSCT(58.8%,34.2%,81.0%),the differences were all statistically significant(P<0.05).Kappa test showed that the consistency between DWI and cystoscopy was good(Kappa value=0.796),and the consistency between MSCT and cystoscopy was general(Kappa value=0.586),both differences were statistically significant(P<0.05).Conclusion DWI technology can improve the diagnostic accuracy,sensitivity and specificity of rare types of cystitis,and provide different sequence imaging signs,which is worthy of reference and promotion.