Key result
A CTA protocol of 80 kVp with 2.0 pitch resulted in the highest subjective image quality scores and lowest radiation dose compared with other tested protocols in a 3D-printed aortic dissection model.
Why the study?
Optimal computed tomography angiography scanning protocols for patients with aortic dissection following thoracic endovascular aortic repair remain to be investigated.
Does a low tube voltage and high pitch CTA protocol provide adequate image quality while reducing radiation dose in a 3D-printed aortic dissection model?
Does a low tube voltage and high pitch CTA protocol provide adequate image quality while reducing radiation dose in a 3D-printed aortic dissection model?
A low tube voltage (80 kVp) and high pitch (2.0) CTA protocol optimizes image quality while minimizing radiation dose for follow-up of aortic dissection.
May inform low-dose CTA optimization in aortic models; leaves open clinical validation in patients.
Aim: This study aimed to investigate the optimal computed tomography angiography (CTA) scanning protocols in patients with aortic dissection following thoracic endovascular aortic repair. Materials & methods: A patient-specific aortic dissection model was CT scanned at different tube voltages (80, 100 and 120 kVp) and pitch values (1.2, 1.5, 2.0 and 2.5). Six radiologists and ten radiological technologists were invited to assess images in terms of both image quality and diagnostic value. Results & conclusion: The protocol of 80 kVp with 2.0 pitch resulted in highest subjective scores with lowest dose value compared with other protocols. This study concludes that low tube voltage with high pitch (CTA) using 3D-printed model produces adequate image quality while reducing radiation dose.
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Wu et al. (2022) studied Type B Aortic Dissection following thoracic endovascular aortic repair. CTA scanning at 80 kVp with 2.0 pitch vs. Other CTA protocols (100/120 kVp, 1.2/1.5/2.5 pitch) was evaluated on Image quality, diagnostic value, and radiation dose. A CTA protocol of 80 kVp with 2.0 pitch resulted in the highest subjective image quality scores and lowest radiation dose compared with other tested protocols in a 3D-printed aortic dissection model.
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