Feasibility of contrast material volume reduction in coronary artery imaging using 320-slice volume CT View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2010-06

AUTHORS

Patrick A. Hein, Juliane May, Patrik Rogalla, Craig Butler, Bernd Hamm, Alexander Lembcke

ABSTRACT

OBJECTIVE: To assess reduced volumes of contrast agent on image quality for coronary computed tomography angiography (CCTA) by using single-beat cardiac imaging with 320-slice CT. MATERIALS AND METHODS: Forty consecutive male patients (mean age: 55.8 years) undergoing CCTA with body weight >or=55% were included. Image acquisition protocol was standardized (120 kV, 400 mA, and prospective ECG-triggered single-beat nonspiral CCTA). Patients were randomly assigned to one of four groups (G1: received 40 ml, G2: 50 ml, G3: 60 ml, G4: 70 ml). Groups were compared with respect to aortic attenuation, image noise, and image quality. RESULTS: CT values (mean +/- standard deviation) in the aortic root were measured as 423 +/- 38 HU in G1, and 471 +/- 68, 463 +/- 60, and 476 +/- 78 HU in G2-4, respectively. There were no statistically significant differences in attenuation among the groups (P > 0.068). All 40 CT datasets were rated diagnostic, and image noise and image quality were not statistically different among groups. CONCLUSION: Using 320-slice volume CT, diagnostic image quality can be achieved with 40 ml of contrast material in CCTA in patients with normal body weight, cardiac function, and low heart rate. More... »

PAGES

1337-1343

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00330-009-1692-z

DOI

http://dx.doi.org/10.1007/s00330-009-1692-z

DIMENSIONS

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PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/20016900


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