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La radiologia medica

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01-04-2014 | Cardiac Radiology

256-slice CT coronary angiography: in vivo dosimetry and technique optimization

Authors: Manuel Belgrano, Paola Bregant, Micheline Fute Djoguela, William Toscano, Elena Marchese, Maria A. Cova

Published in: La radiologia medica | Issue 4/2014

Abstract

Purpose

This study was undertaken to compare the different acquisition protocols available in a last-generation multislice computed tomography scanner used for cardiovascular studies, with particular attention to dosimetric aspects.

Materials and methods

Our study compared prospective and retrospective electrocardiographic-gating techniques for cardiac imaging. For each patient, we performed in vivo dose measurements, using Gafchromic film. We compared the effective dose values estimated from the experimental measurements and the dose data reported on the CT console. Image quality was also assessed.

Results

Prospective acquisition allows for major dose savings compared to retrospective acquisition (mean effective dose, 4.5 mSv with prospective acquisition versus 27.5 mSv with retrospective acquisition). The agreement between the experimental and software-based dose estimates was excellent and showed below 10 % of variation of the measured dose.

Conclusion

In patients with regular rhythm and a heart rate lower than 75 bpm, the prospective acquisition technique ensures adequate diagnostic results and allows for significant patient dose savings.

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Title: 256-slice CT coronary angiography: in vivo dosimetry and technique optimization
Authors: Manuel Belgrano
Paola Bregant
Micheline Fute Djoguela
William Toscano
Elena Marchese
Maria A. Cova
Publication date: 01-04-2014
Publisher: Springer Milan
Published in: La radiologia medica / Issue 4/2014
Print ISSN: 0033-8362
Electronic ISSN: 1826-6983
DOI: https://doi.org/10.1007/s11547-013-0334-3

Keynote webinar | Spotlight on medication adherence

Springer Medicine

256-slice CT coronary angiography: in vivo dosimetry and technique optimization

Abstract

Purpose

Materials and methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Materials and methods

Results

Conclusion

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