Diagnostic value of 64-slice spiral CT triple-phase enhanced scan in evaluation of lymphatic metastasis of gastric cancer
10.3969/j.issn.1002-1671.2014.08.018
- VernacularTitle:64层螺旋 CT 三期增强扫描对胃癌转移性淋巴结的诊断价值
- Author:
Xiaoyan ZHOU
;
Longbai MA
;
Shunrong HUANG
;
Jiawei LIN
;
Dongbo WU
;
Chuan LI
;
Chaolong JIANG
;
Ying LI
;
Xiaorong ZHANG
- Publication Type:Journal Article
- Keywords:
computed tomography;
gastric cancer;
lymph nodes
- From:
Journal of Practical Radiology
2014;(8):1316-1319
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the clinical value of 64-slice spiral computed tomography(64-MSCT)triple-phase enhanced scan in diagnosis of lymphatic metastasis of gastric cancer.Methods Thirty patients with gastric cancer underwent plain and triple-phase enhanced scan by using 64-MSCT to analyze the relevant parameters of lymphatic metastasis.Results The four parameters de-termined metastatic perigastric lymph node as follows:①the short diameter ≥6 mm,②the ratio of short-to-long diameter ≥0.6,③the CT value in the portal venous phase≥ 65 HU,④the difference of CT values between portal venous phase and plain scan≥35 HU.The sensitivity and specificity of combining two parameters (①+②)in diagnosing metastatic lymph node were 90.5% and 29.0%,respectively.The sensitivity and specificity of combining three parameters (①+②+③)were 98.2% and 1 9.4%,respec-tively.The sensitivity and specificity of combining four parameters (①+②+③+④)were 99.7% and 13.2%,respectively.In ad-dition,metastatic lymph nodes were considered if they were ring-enhancement,or adhesions of several lymph nodes.Conclusion The use of 64-MSCT triple-phase enhanced scan and synthesis of various parameters of lymph nodes could lead to reliable diagnosis of lymphatic metastasis in gastric cancer with rapid,non-invasive,high sensitive and specific features.
