Diagnostic value of CT plain scan for isolated superior mesenteric artery dissection
10.3969/j.issn.1002-1671.2024.06.014
- VernacularTitle:CT平扫对肠系膜上动脉夹层的诊断价值
- Author:
Shun QIU
1
;
Yueqi HUANG
;
Guanghua LUO
;
Qiulin HUANG
;
Qingchun LI
Author Information
1. 南华大学附属第一医院胃肠外科,湖南 衡阳 421001
- Keywords:
superior mesenteric artery;
dissection;
computed tomography
- From:
Journal of Practical Radiology
2024;40(6):922-925,930
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the diagnostic value of CT plain scanning for isolated superior mesenteric artery dissection(ISMAD).Methods This study retrospectively investigated CT plain images of the superior mesenteric artery(SMA)in 45 patients with ISM AD and 45 patients without ISMAD.The imaging manifestations of ISMAD were analyzed,and the sensitivity and specificity of these manifestations were analyzed using receiver operating characteristic(ROC)curve.Results There were statistically significant differences in both the trunk diameter and standardized trunk diameter of the SMA between the two groups(P＜0.001,P=0.001).Additionally,the area under the curve(AUC)for the SMA trunk diameter in diagnosing ISMAD was determined to be 0.988,with a statistically significant P-value of less than 0.001.Furthermore,when the diameter of the SMA trunk reached 8.20 mm,the diagnostic sensitivity was 97.8％and the specificity was 93.3％.The AUC for the standardized diameter of the SMA trunk was determined to be 0.976.Additionally,when the standardized diameter of the SMA trunk reached 70.33％,the diagnostic sensitivity was 95.6％and the specificity was 82.2％.There was no statistically significant difference observed in the luminal CT value and standardized CT value of the SMA between the two groups(P＞0.05).Additionally,the presence of the"crescent sign"and peritubular fat blurring in the SMA demonstrated some level of diagnostic significance.Conclusion CT scanning has the capability to identify the enlarged diameter of the SMA trunk,as well as plain the"crescent sign"and related manifestations.This finding holds significant value in diagnosing ISMAD.Furthermore,it provides the basis for the necessity of subsequent computed tomography angiography(CTA)examinations.
