Preliminary study of gastric carcinoma volume measurement using computed tomography for N staging evaluation
10.3969/j.issn.1002-1671.2015.01.023
- VernacularTitle:CT测量胃癌体积对N分期评估的初步研究
- Author:
Nan JIANG
;
Shunlin GUO
;
Gang WANG
;
Zhonghong XIN
;
Zhongchun ZHOU
;
Liang YIN
;
Mei YANG
;
Hao YUAN
;
Ying FENG
- Publication Type:Journal Article
- Keywords:
gastric carcinoma;
computed tomography;
staging;
computed assisted
- From:
Journal of Practical Radiology
2015;(1):87-90
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the value of volume measured by multi-slice spiral CT in preoperative N staging of gastric canc-er.Methods CT data of 1 93 cases of gastric cancer proven pathologically were collected and analyzed.Volume of the tumor was cal-culated in the portal phase,and the correlation between the results and N staging was evaluated.ROC curve was used to get diagnos-tic value to differentiate N stages.Results Intra-observer Kappa value was 0.77 (P < 0.05 ),0.72 (P < 0.05 ),Inter-observer Kappa value was 0.69 (P <0.05).The tumor volume data was positively correlated with different N stages (r=0.568,P <0.05). ROC curve showed that the volume could help differentiate between stage N0 and stage N1 - N3 (cutoff 12.06 cm3 ,sensitivity 55%,specificity 95%),stage N0-N1 and stage N2-N3 (cutoff 22.35 cm3 ,sensitivity 66%,specificity 86%),stage N0-N2 and stage N3 (cutoff 25.95 cm3 ,sensitivity 62%,specificity 89%)respectively.Conclusion The volume of gastric cancer measured by CT plays an important part in predicting lymph node metastasis staging and optimizing individualized clinical strategy for patients.
