Revista portuguesa de cardiologia : orgao oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology · 2010
Coronary computed tomography angiography in a single cardiac cycle with a mean radiation dose of approximately 1 mSv: initial experience.
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Duarte Ricardo, Bettencourt Nuno, Costa João C, Fernandez Gabriel
Аннотация
INTRODUCTION: The aim of this study was to evaluate the radiation dose, image quality and acquisition time of coronary computed tomography angiography (CCTA) using a 128-slice dual source scanner with prospective ECG-triggered high-pitch spiral acquisition (Flash Spiral).
METHODS: A series of 20 consecutive patients in sinus rhythm, with no contraindications to administration of iodinated contrast media and beta-blockers and no history of coronary revascularization, underwent CCTA either to rule out coronary artery disease (CAD) or to evaluate known or suspected CAD. Image quality was evaluated using a four-point scale (1 excellent, 4 poor). Data on acquisition time and radiation dose were recorded.
RESULTS: Mean acquisition time was 292 +/- 21 milliseconds. The mean effective radiation dose was 0.99 mSv +/- 0.34 mSv. All of the 266 coronary artery segments analyzed were of diagnostic image quality.
CONCLUSION: CCTA using a 128-slice dual source scanner with prospective ECG-triggered high-pitch spiral acquisition provides single cardiac cycle acquisition with high image quality at mean effective radiation doses of approximately 1 mSv.
METHODS: A series of 20 consecutive patients in sinus rhythm, with no contraindications to administration of iodinated contrast media and beta-blockers and no history of coronary revascularization, underwent CCTA either to rule out coronary artery disease (CAD) or to evaluate known or suspected CAD. Image quality was evaluated using a four-point scale (1 excellent, 4 poor). Data on acquisition time and radiation dose were recorded.
RESULTS: Mean acquisition time was 292 +/- 21 milliseconds. The mean effective radiation dose was 0.99 mSv +/- 0.34 mSv. All of the 266 coronary artery segments analyzed were of diagnostic image quality.
CONCLUSION: CCTA using a 128-slice dual source scanner with prospective ECG-triggered high-pitch spiral acquisition provides single cardiac cycle acquisition with high image quality at mean effective radiation doses of approximately 1 mSv.