The diagnostic value of spectral CT calcium suppression technique in new traumatic rib fractures
10.3969/j.issn.1002-1671.2025.04.022
- VernacularTitle:能谱CT钙抑制技术在外伤性肋骨新发骨折中的诊断价值
- Author:
Haoyang LIU
1
;
Changhua LIANG
Author Information
1. 新乡医学院第一附属医院放射科,河南 新乡 453100;郑州人民医院影像科,河南 郑州 450000
- Publication Type:Journal Article
- Keywords:
bone marrow edema;
rib fracture;
spectral CT;
calcium suppression technique
- From:
Journal of Practical Radiology
2025;41(4):637-641
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the feasibility and accuracy of spectral CT calcium suppression technique in the diagnosis of new traumatic rib fractures.Methods A total of 30 patients with a clear history of trauma and clinical diagnosis of rib fracture or suspected traumatic fracture were retrospectively selected.Rib spectral CT and MRI plain scan were performed within 24 h.All ribs were divided into 24 regions(the left and right ribs were divided into 12 regions respectively).Two physicians independently analyzed whether the ribs in each region had cortical discontinuity and used the spectral CT calcium suppression color image to evaluate whether the ribs had bone marrow edema.Bone marrow edema accompanied by cortical discontinuity was diagnosed as a new rib fracture,otherwise it was not a new rib fracture.Kappa test was used to analyze the consistency of the diagnosis results of the two physicians.χ2 test was used to compare the fracture type and bone marrow edema between spectral CT and MRI images.The CT values of all regions were measured with the MRI results as the reference standard,and the independent sample t test was used to analyze whether it was statistically significant.Receiver operating characteristic(ROC)curve was used to analyze the diagnostic efficacy of spectral CT calcium suppression technique for rib fractures.Results The accuracy of spectral CT calcium suppression technique in the diagnosis of bone marrow edema of rib fracture was 96.9%.The CT value of bone marrow edema region[(7.6±23.8)HU]was significantly higher than that of normal rib region[(-54.4±18.4)HU](P＜0.000 1).The area under the curve(AUC)of spectral CT calcium suppression technique in the diagnosis of rib bone marrow edema was 0.989,and the cutoff value was-22.8.Conclusion Spectral CT calcium suppression technique has high sensitivity to new traumatic rib fractures,and can intuitively and quantitatively analyze bone marrow edema through pseudo-color images,providing a reference for clinical diagnosis of new rib fractures.
