ArticleEuropean radiology2014
Contrast agent bolus tracking with a fixed threshold or a manual fast start for coronary CT angiography.
Article in European radiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Optimizing coronary CT angiography in patients with delayed contrast arrival using a free-breathing, high-threshold bolus-tracking protocol.Insights into imaging · 2026Article
- Anatomical variations of the branches from left colic artery and middle colic artery at splenic flexure.Surgical and radiologic anatomy : SRA · 2022Article
- Dual-source computed tomography coronary artery imaging in children.Pediatric radiology · 2019Review
- Third-generation dual-source dual-energy CT in pediatric congenital heart disease patients: state-of-the-art.La Radiologia medica · 2019Review
- Temporal averaging for analysis of four-dimensional whole-heart computed tomography perfusion of the myocardium: proof-of-concept study.The international journal of cardiovascular imaging · 2017Article
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Authors and funding
6 authors.
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Abstract
objectivesComparison of bolus tracking with a fixed threshold versus a manual fast start for coronary CT angiography.
methodsWe retrospectively analysed 320-row coronary CT angiography of 50 patients with suspected or known coronary artery disease. Twenty-five examinations were initiated by a bolus tracking method (group 1), 25 examinations with a manual fast surestart (group 2).
resultsMean attenuation values in the ascending aorta were 519 ± 111 Hounsfield units (HU) in group 1 and 476 ± 65 HU in group 2 (p = 0.10). Assessable vessel lengths were 171 ± 44 mm vs 172 ± 29 mm for the right coronary artery (p = 0.91), 11 ± 4 mm vs 12 ± 4 mm for the left main (p = 0.9), 163 ± 28 mm vs 151 ± 26 mm for the left anterior descending coronary artery (p = 0.11) and 125 ± 41 mm vs 110 ± 37 mm for the left circumflex coronary artery (p = 0.18). Image quality for all coronary arteries was not significantly different between the groups (p > 0.41). The attenuation ratio between the left and right ventricle was 2.8 ± 0.7 vs 3.6 ± 1.0 (p = 0.003). Significantly less contrast agent was used in group 2 (64 ± 6 ml vs 80 ± 0 ml; p < 0.001).
conclusionsBolus tracking with a fixed threshold and with a manual fast start are both suitable methods; the fast start allowed a reduction of contrast agent volumes. KEY POINTS: Fixed threshold bolus tracking is suitable for coronary 320-row CT angiography. Manual fast start bolus tracking can reduce contrast agent volumes. Manual fast start and fixed threshold initiation achieve good image quality. Fixed threshold bolus tracking achieves a more reliable contrast bolus position.
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