title: Determining gastric cancer resectability by dynamic MDCT.
abstract: OBJECTIVE
  Multi-detector row CT (MDCT) has been widely used to detect primary lesions and to evaluate TNM staging. In this study we evaluated the accuracy of dynamic MDCT in the preoperative determination of the resectability of gastric cancer.
  
  
  METHODS
  MDCT was used to image 350 cases of gastric cancer diagnosed by biopsy before surgery. MDCT findings regarding TNM staging and resectability were correlated with surgical and pathological findings.
  
  
  RESULTS
  The accuracy of MDCT for staging gastric cancer was high, especially for tumour stage T1 (94.3%), lymph node stage N2 (87.3%), and for predicting distant metastases (>96.6%). When resectability was considered to be the outcome, the total accuracy of MDCT was 87.4%, sensitivity was 89.7% and specificity was 76.7%. Results showed high sensitivity for identifying peritoneal seeding (90.0%) and for predicting liver metastasis (80.0%).
  
  
  CONCLUSIONS
  Dynamic enhanced MDCT is useful for TNM staging of gastric cancers and for predicting tumour respectability preoperatively.
authors.affiliation: Department of Radiology, Ruijin Hospital affiliated to Jiaotong University, 197 Ruijin Er Road, Shanghai 200025, China.
authors.forename: Zilai
authors.initials: Z
authors.lastname: Pan
authors.forename: Huan
authors.initials: H
authors.lastname: Zhang
authors.forename: Chao
authors.initials: C
authors.lastname: Yan
authors.forename: Lianjun
authors.initials: L
authors.lastname: Du
authors.forename: Bei
authors.initials: B
authors.lastname: Ding
authors.forename: Qi
authors.initials: Q
authors.lastname: Song
authors.forename: Huawei
authors.initials: H
authors.lastname: Ling
authors.forename: Baisong
authors.initials: B
authors.lastname: Huang
authors.forename: Kemin
authors.initials: K
authors.lastname: Chen
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery*; D014057:Tomography, X-Ray Computed / Q000379:methods*; D016896:Treatment Outcome
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