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Normal aortoiliac diameters by CT
D Horejs1, P M Gilbert, S Burstein
1Department of Diagnostic Radiology, Northwestern University Medical School, Chicago, IL.
Insights
Standard CT measurements for abdominal aorta, iliac, and femoral arteries are lacking. This study establishes normal vascular dimensions, revealing vessel diameter increases with age and is larger in men than women.
Area of Science:
- Vascular imaging
- Radiology
- Anatomy
Background:
- Computed tomography (CT) is crucial for vascular disease evaluation.
- Established CT-derived dimensions for the abdominal aorta, iliac, and femoral arteries are currently lacking.
- Standardized measurements are needed for accurate interpretation of vascular imaging.
Purpose of the Study:
- To establish standard CT-derived dimensions for the abdominal aorta, iliac, and femoral arteries.
- To analyze the influence of age and sex on these vascular dimensions.
- To provide a reference range for normal vascular measurements.
Main Methods:
- Retrospective analysis of CT scans from 260 patients.
- Patients were stratified by sex and age groups.
- Measurements of aortic diameter at suprarenal, renal, and infrarenal locations.
- Bilateral measurements of iliac and femoral artery diameters.
Main Results:
- Vessel diameter demonstrated a progressive increase with age in both sexes.
- Men exhibited significantly larger vessel diameters compared to age-matched women.
- These sex-based differences were consistent across all measured arterial levels.
Conclusions:
- This study presents a determined normal range for vascular dimensions of the abdominal aorta, iliac, and femoral arteries.
- Age and sex are significant factors influencing abdominal arterial dimensions.
- The findings provide essential reference data for CT-based vascular assessments.
Abstract:
In spite of the vital role CT plays in the evaluation of vascular disease, no standard CT derived dimensions for the abdominal aorta, iliac, and femoral arteries have been established. A retrospective study of the CT scans of 260 patients was performed with patients separated by sex and age. Aortic diameter was measured at predetermined suprarenal, renal, and infrarenal locations and single measurements of the iliac and femoral arteries were made bilaterally. The vessel diameter was observed to gradually increase with age in both sexes. Men were found to have larger diameter vessels than age matched women. This pattern was noted at all levels measured. The normal range of vascular dimensions determined is presented.