Value of dynamic contrast-enhanced CT combined with MRI in differential diagnosis of adrenal adenoma and metastatic tumor
10.3760/cma.j.issn.1008-1372.2019.12.022
- VernacularTitle: 动态增强CT联合MRI对肾上腺腺瘤与转移瘤的鉴别诊断价值
- Author:
Guangyang YANG
1
;
Haiqing LONG
;
Ying ZHANG
;
Hailang YANG
;
Qiang SU
;
Weihua ZHAO
Author Information
1. Department of Radiology, the First People's Hospital of Xiangtan, Xiangtan 411101, China
- Publication Type:Journal Article
- Keywords:
Image enhancement;
Tomography, X-ray computed;
Magnetic resonance imaging;
Adrenal gland neoplasms
- From:
Journal of Chinese Physician
2019;21(12):1845-1848
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the clinical significance of dynamic contrast-enhanced computed tomography (CT) combined with magnetic resonance imaging (MRI) in differential diagnosis of adrenal adenoma and metastasis.
Methods:120 patients with adrenal adenoma who were examined by enhanced MRI and enhanced CT before operation were collected. According to the pathological examination after operation, they were divided into adrenal adenoma group (86 cases) and adrenal metastasis group (34 cases). The difference of time-density curve between the two groups was compared, and the diagnostic criteria were evaluated by using receiver operating characteristic (ROC) curve.
Results:Dynamic CT and dynamic MRI were mainly type A, followed by type C, B, D and E. Dynamic CT and dynamic MRI were mainly type B, followed by type D/E, type A and type C. There were significant differences in type A, B, C, E dynamic CT and dynamic MRI between the two groups (P<0.05); there was no significant difference in type D dynamic CT and dynamic MRI between the two groups (P>0.05). The AZ value of adrenal adenomas ranged from 0.714 to 0.825 and that of adrenal metastasis ranged from 0.872 to 0.965 at 3-30 minutes delay.
Conclusions:Dynamic contrast-enhanced CT combined with MRI in patients with adrenal adenoma and metastasis has a time-density difference, 5min has high discriminant value in time lapse.
