J Korean Radiol Soc.  1995 Mar;32(3):429-434. 10.3348/jkrs.1995.32.3.429.

Two-phase Spiral CT of the Pancreatic Adenocarcinoma: Comparison of Arterial and Late Phase

• Chung MJ
• Choi BI
• Han JK
• Sim JS
• Han MC

• KMID: 2465318
• DOI: http://doi.org/10.3348/jkrs.1995.32.3.429

Abstract

PURPOSE
To evaluate the efficacy of the arterial phase of dynamic spiral CT in the detection of pancreatic adenocarcinoma compared with the late phase.
MATERIALS AND METHODS
Two phase spiral CT images of seventeen patients with pathologically proven pancreatic ductal adenocarcinomas were compared retrospectively. CT scans were performed with 5mm collimation at 1:1 pitch table speed. Images of arterial and late phases were obtained at 35 seconds and 180 seconds after initiation of administration of 100mL of contrast material(3mL/sec), respectively. Images of the arterial phase were compared with those of the late phase.
RESULTS
Images of the arterial phase showed sufficient contrast between the tumor and adjacent pancreatic parenchyma in 12 cases, insufficient in four cases, and no significant contrast in one case. Images of the late phase showed sufficient contrast in five cases, insufficient in five cases, and no significant contrast in seven cases. Images of the arterial phase was superior to that of the late phase in 12 patients(70.6%). In six of the 12 patients, only the images of the arterial phase showed contrast between the tumor and the adjacent parenchyma. The images of late phase showed only one case of three metastasis detected on the images of the arterial phase.
CONCLUSION
The arterial phase of spiral CT is superior to the late phase that is comparable with conventional CT in the detection of pancreatic adenocarcinoma.

MeSH Terms

Adenocarcinoma*
Humans
Neoplasm Metastasis
Pancreatic Ducts
Retrospective Studies
Tomography, Spiral Computed*
Tomography, X-Ray Computed