Acta Academiae Medicinae Sinica

Acta Academiae Medicinae Sinica

Acta Academiae Medicinae Sinica ›› 2006, Vol. 28 ›› Issue (1): 76-79.

• Original Articles • Previous Articles     Next Articles

Comparison of Multi-slice Spiral CT and Magnetic Resonance Imaging in Evaluation
of the Unresectability of Blood Vessels in Pancreatic Tumor

REN Ying;JIN Zheng-yu;XUE Hua-dan;YOU Hui;FENG Feng

  

  1. Department of Radiology,PUMC Hospital,CAMS and PUMC,Beijing 100730,China

  • Received:2005-10-10 Revised:1900-01-01 Online:2006-02-28 Published:2006-02-28
  • Contact: JIN Zhengyu

Abstract:

ABSTRACT:Objective To compare the values of multi-slice spiral CT(MSCT)and magnetic resonance imaging (MRI) in evaluating the unresectability of blood vessels in pancreatic tumor. Methods Images obtained from MSCT and MRI of pancreas in 14 patients with pancreatic cancer were retrospectively reviewed. MSCT scanning included arterial phase,pancreatic-portal phase,and delay-phase. MRI scanning included fat-suppressed T2WI,dual-echo T1WI,and fat-suppressed T1WI before and after injection of contrast (arterial phase,pancreatic-portal phase,delay-phase,and late delay phase). Seven patients received operations within two weeks after the examinations. The staging of peripancreatic blood vessels in MSCT and MRI images was evaluated and compared. The veracity of MSCT and MRI in assessing the unresectability of peripancreatic blood vessels was calculated and compared according to the findings in operation. Results All the tumors were observed in MSCT and MRI images. Statistical difference existed in staging of peripancreatic blood vessels and in evaluating their unresectability between MSCT and MR (P<0.05). The sensitivity,specificity,accuracy,positive predictive value,and negative predictive value of the unresectability assessed by MSCT were 77.8%,95%,91.8%,77.8%,and 95%,respectively,and those assessed by MR were 66.7%,90%,85.7%,60%,and 92.3%,respectively. Conclusion Dynamic MSCT is better than dynamic MR to some extent in evaluating the unresectability of peripancreatic blood vessels in pancreatic tumor.

Key words: pancreatic tumor, multi-slice spiral ct, macnetic resonance imacinc