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Demonstration of aberrant hepatic and gastric arteries with helical CT
Y Ohgiya1, T Gokan, H Munechika
1Department of Radiology, Showa University School of Medicine, Tokyo, Japan.
Insights
Routine biphasic helical computed tomography (CT) effectively demonstrates aberrant hepatic and gastric arteries. This imaging technique aids in surgical and transcatheter management of liver tumors.
Area of Science:
- Radiology
- Medical Imaging
- Hepatobiliary Surgery
Background:
- Aberrant hepatic and gastric arteries can impact surgical and interventional procedures.
- Accurate pre-operative identification of these vessels is crucial for successful patient outcomes.
Purpose of the Study:
- To evaluate the efficacy of routine axial biphasic helical CT in demonstrating aberrant hepatic and gastric arteries.
- To compare CT findings with angiography for aberrant vessel identification.
Main Methods:
- Retrospective review of arterial-phase biphasic helical CT images in 166 patients with hepatocellular carcinoma.
- Biphasic helical CT performed with 10 mm collimation at 30 and 70 seconds.
- Comparison of CT results with angiography performed within two weeks.
Main Results:
- Aberrant hepatic arteries were identified in 88% of cases by CT compared to angiography (38/43 patients).
- Aberrant left gastric arteries were identified in all three cases by both CT and angiography.
- Specific anatomical landmarks, such as the fissure for the ligamentum venosum and portacaval space, aided detection.
Conclusions:
- Routine axial biphasic helical CT is effective in demonstrating aberrant hepatic and gastric arteries.
- This imaging modality provides valuable information for surgical and transcatheter management of hepatic tumors.
Rationale And Objectives:
To assess the demonstration of aberrant hepatic and gastric arteries with routine axial biphasic helical CT.
Methods:
The arterial-phase images of biphasic helical CT were reviewed to evaluate aberrant hepatic and gastric arteries in 166 patients with hepatocellular carcinomas. Biphasic (30 and 70 seconds) helical CT was performed with 10 mm of collimation. The results were compared with angiography performed within 2 weeks after this CT.
Results:
Aberrant hepatic arteries were identified by CT in 38 patients and by angiography in 43 patients (38/43, 88%). Aberrant left gastric arteries were identified in three patients by angiography and by CT (3/3). Careful observation of the fissure for the ligamentum venosum and portacaval space was useful for the detection of these arteries.
Conclusions:
Aberrant hepatic and gastric arteries were well demonstrated with routine axial biphasic helical CT. This may be useful for the surgical and transcatheter management of hepatic tumors.