Preoperative T staging of gastric cancer: comparison between MR including diffusion weighted imaging and contrast enhanced CT scan.
- Author:
Song LIU
1
;
Jian HE
;
Wenxian GUAN
;
Qiang LI
;
Zhuping ZHOU
;
Haiping YU
;
Shanhua BAO
;
Zhengyang ZHOU
Author Information
- Publication Type:Journal Article
- MeSH: Biopsy; Contrast Media; Diffusion Magnetic Resonance Imaging; Gastroscopy; Humans; Magnetic Resonance Imaging; Neoplasm Staging; Stomach Neoplasms; pathology
- From: Chinese Journal of Gastrointestinal Surgery 2014;17(3):245-249
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo compare the accuracy of CT and MR including diffusion-weighted imaging(DWI) in preoperative diagnosis and T staging of gastric cancer.
METHODSForty-one patients with gastric cancers proved by gastroscopy biopsy from November 2011 to August 2012 were prospectively enrolled. They underwent contrast enhanced CT and MR imaging (including DWI, T2 weighted and dynamic enhanced imaging) preoperatively. Two radiologists interpreted CT and MR images for detecting and staging each patient independently. With the reference of post-operative histopathological findings, T staging accuracy of CT and MR imaging was calculated and compared. Inter-observer agreement was also evaluated.
RESULTSOverall T staging accuracy in MR including DWI was significantly higher than that in CT imaging(87.8% vs. 65.9%, P=0.004). MR had a better inter-observer agreement than CT(Kappa=0.813, 0.603, respectively).
CONCLUSIONMR including DWI can improve preoperative T staging accuracy of gastric cancer significantly, which deserves recommendation for clinical application.
