Diagnostic value of 3.0T dynamic contrast-enhanced MRI and diffusion weighted imaging for common parotid tumors
10.3760/cma.j.issn.1671-7368.2018.04.014
- VernacularTitle:3.0T磁共振DWI及动态增强扫描在腮腺常见肿瘤中的诊断价值
- Author:
Dongyang YU
1
;
Ben SHAN
;
Yong LIU
;
Lei HAN
;
Min XU
;
Hansong ZHOU
Author Information
1. 223002,江苏省徐州医科大学附属淮安医院放射科
- Keywords:
Parotid neoplasms;
Magnetic resonance imaging;
Image enhancement,dynamic;
Diffusion magnetic resonance imaging
- From:
Chinese Journal of General Practitioners
2018;17(4):303-306
- CountryChina
- Language:Chinese
-
Abstract:
Thirty nine patients with pathologically confirmed parotid tumors,including 18 cases of pleomorphic adenomas,12 cases of papillary cystadenoma lymphomatosum and 9 cases of malignant tumors,were enrolled in the study.Characteristics on routine MR image,diffusion weighted imaging (DWI),timesignal intensity curve (TIC) and apparent diffusion coefficient (ADC) value in different types of tumors were evaluated.There were significant differences in imaging features between benign and malignant tumors (P ＜ 0.01).The TIC types were A,B and C for pleomorphic adenomas,papillary cystadenoma lymphomatosum and malignant tumors,respectively.The mean ADC value of pleomorphic adenomas was significantly higher than that of papillary cystadenoma lymphomatosum and malignant tumors (P ＜ 0.01).No significant difference in ADC values between papillary cystadenoma lymphomatosum and malignant tumors was detected (P =0.73).The study indicates that MR plain scan combined with dynamic contrast enhanced MRI and DWI may be helpful in pre-operative differentiation of common parotid tumors.
