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- Title
Part 2 - Coronary angiography with gadofosveset trisodium: a prospective intra-subject comparison for dose optimization for 100 % efficiency imaging.
- Authors
Ahlman, Mark A.; Raman, Fabio S.; Jianing Pang; Zemrak, Filip; Sandfort, Veit; Penzak, Scott R.; Zhaoyang Fan; Songtao Liu; Debiao Li; Bluemke, David A.; Pang, Jianing; Fan, Zhaoyang; Liu, Songtao; Li, Debiao
- Abstract
<bold>Background: </bold>Three tesla (3T) coronary magnetic resonance angiography (MRA) may be optimized using gadolinium-based contrast agents (GBCA) such as gadofosveset trisodium. The goal of this study was to evaluate if there is a qualitative or quantitative improvement in the coronary arteries with variation in contrast dose.<bold>Methods: </bold>Twenty-eight healthy volunteers were prospectively recruited for coronary MRA at 3T using a steady state injection technique for 3D radial whole-heart image acquisition with retrospective respiratory self-gating (ClinicalTrials.gov identifier: NCT01853592). Nineteen volunteers completed both single- and double-dose imaging instances (0.03 and 0.06 mmol/kg, respectively). Intra-individual comparison of image quality was assessed by measurement of apparent signal/contrast-to-noise ratio (aSNR/aCNR) and subjective evaluation of image quality by 2 independent reviewers.<bold>Results: </bold>The average duration of coronary MRA acquisition was 7.2 ± 1.2 min. There was significantly higher (60 %, p < 0.001) aSNR of the aorta and right/left ventricle for the double dose compared to single dose injection scheme and aSNR of the coronary arteries increased by 70 % (p < 0.001) for the double dose injection. aCNR increased by +55 % and +60 % in the ventricles and coronary arteries, respectively (p < 0.001). Overall segmental artery visualization for single dose was possible 47 % of the time, which improved to 60 % with double dose (p = 0.019), predominantly driven by improvements in more distal segment visualization (+40 % improvement in mid arterial segments, p = 0.013).<bold>Conclusions: </bold>Gadofosveset trisodium dose of 0.06 mmol/kg significantly quantitatively and qualitatively improves the coronary artery image quality compared to 0.03 mmol/kg at 3T for moderate duration (6-8 min) steady state contrast enhanced coronary MRA.
- Subjects
CORONARY angiography; CONTRAST media; MAGNETIC resonance angiography; CORONARY arteries; HEART ventricles; CHEMICAL elements; CLINICAL trials; COMPARATIVE studies; DIAGNOSTIC imaging; LONGITUDINAL method; RESEARCH methodology; MEDICAL cooperation; COMPUTERS in medicine; ORGANOMETALLIC compounds; RESEARCH; RESEARCH funding; TIME; EVALUATION research; PREDICTIVE tests; HUMAN research subjects; DRUG administration; DRUG dosage
- Publication
BMC Cardiovascular Disorders, 2016, Vol 16, p1
- ISSN
1471-2261
- Publication type
journal article
- DOI
10.1186/s12872-015-0152-8