Low kV settings CT angiography (CTA) with low dose contrast medium volume protocol in the assessment of thoracic and abdominal aorta disease: a feasibility study

The British Journal of Radiology
D IppolitoS Sironi

Abstract

To assess the diagnostic quality of low dose (100 kV) CT angiography (CTA), by using ultra-low contrast medium volume (30 ml), for thoracic and abdominal aorta evaluation. 67 patients with thoracic or abdominal vascular disease underwent multidetector CT study using a 256 slice scanner, with low dose radiation protocol (automated tube current modulation, 100 kV) and low contrast medium volume (30 ml; 4 ml s(-1)). Density measurements were performed on ascending, arch, descending thoracic aorta, anonymous branch, abdominal aorta, and renal and common iliac arteries. Radiation dose exposure [dose-length product (DLP)] was calculated. A control group of 35 patients with thoracic or abdominal vascular disease were evaluated with standard CTA protocol (automated tube current modulation, 120 kV; contrast medium, 80 ml). In all patients, we correctly visualized and evaluated main branches of the thoracic and abdominal aorta. No difference in density measurements was achieved between low tube voltage protocol (mean attenuation value of thoracic aorta, 304 HU; abdominal, 343 HU; renal arteries, 331 HU) and control group (mean attenuation value of thoracic aorta, 320 HU; abdominal, 339; renal arteries, 303 HU). Radiation dose exposure in...Continue Reading

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Citations

Aug 4, 2015·The International Journal of Cardiovascular Imaging·Martin BeeresJulian L Wichmann
Dec 15, 2015·Radiologic Clinics of North America·Neil J Hansen
Jan 6, 2017·The British Journal of Radiology·Olivier GhekiereAlain Nchimi
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Jul 23, 2019·Radiation Protection Dosimetry·Ahmad MohammadbeigiMohammad Taghi Eivazi
Dec 19, 2020·Radiation Protection Dosimetry·Atefeh TahmasebzadehReza Reiazi

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