title: MDCT with multiplanar reconstruction in the preoperative local staging of rectal tumor.
abstract: OBJECTIVE
  To evaluate the accuracy of MDCT with multiplanar reconstruction in the preoperative local staging of rectal tumor.
  
  
  METHODS
  Thirty-seven patients with rectal tumor underwent preoperative MDCT. Two radiologists evaluated the depth of tumor invasion (T staging), regional lymph node involvement (N staging) and mesorectal fascia involvement on axial, sagittal, and coronal multiplanar reconstruction images in consensus. MDCT findings were compared with pathologic results, which served as the reference standard. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were assessed.
  
  
  RESULTS
  Overall accuracy was 86% in T staging, 84% in N staging, 89% in International Union Against Cancer (UICC) Staging, and 94.5% in the prediction of mesorectal fascia involvement.
  
  
  CONCLUSIONS
  MDCT with multiplanar reconstruction is an accurate technique in the preoperative local staging of rectal tumor.
authors: Department of Radiology, Karadeniz Technical University, Farabi Hospital, Trabzon, Turkey. aliahmetoglu@gmail.com
authors: Ali
authors: A
authors: Ahmetoğlu
authors: Ayşegül
authors: A
authors: Cansu
authors: Duygu
authors: D
authors: Baki
authors: Sibel
authors: S
authors: Kul
authors: Umit
authors: U
authors: Cobanoğlu
authors: Etem
authors: E
authors: Alhan
authors: Feyyaz
authors: F
authors: Ozdemir
mesh_terms: D000328:Adult; D000368:Aged; D001466:Barium Sulfate; D003287:Contrast Media; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D007479:Iopamidol; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging / Q000379:methods*; D015588:Observer Variation; D011237:Predictive Value of Tests; D011300:Preoperative Care / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D012007:Rectum / Q000000981:diagnostic imaging; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media; D001466:Barium Sulfate; D007479:Iopamidol