CTA technical parameters for aorta and peripheral arteries
Applied
Type
ModificationConfidence
95%
Created
Mar 20, 2026
Evidence
2 sources
Rationale
The section was updated to incorporate the most recent major guidelines for aortic disease (2022) and peripheral artery disease (2024). These guidelines reinforce the technical parameters previously listed and provide a stronger evidence base for the use of ECG-gating and high-resolution distal imaging. Abbreviations were expanded on first use as per instructions.
Evidence
Content Changes
removedadded
**computed**Computed tomography angiography (CTA) Technical Parameters for Aorta and Peripheral Arteries** Optimal CTA imaging requires attention to specific technical parameters that vary by anatomic region: **Aortic and endovascular aneurysm repair (EVAR) imaging:** High-quality aortic CTA employs submillimeter collimation (≤1 mm) with multiphasic acquisitions including non-contrast, arterial phase (using bolus tracking), and delayed phase for endoleak detection. ECG-gating is applied for thoracic aorta imaging when assessing the aortic root or ascending aorta.aorta to minimize motion artifact [@aha2022-g]. Standardized contrast delivery protocols (4–6 mL/s with bolus tracking) ensure consistent arterial enhancement. **Lower extremity CTA:** Imaging parameters including table speed and reconstruction kernels are optimized for distal runoff vessel assessment,assessment in patients with lower extremity peripheral artery disease (PAD), ensuring adequate visualization of tibial and pedal arteries.arteries [@svs2024-l]. These technical standards support the planning and surveillance protocols outlined in ESVS abdominal aortic aneurysm (AAA) guidelines.guidelines and recent multisociety recommendations for aortic and peripheral vascular disease. [@sun2011] [@esvs2019-aaa] [@aha2022-g] [@svs2024-l]