Coronary arteries: assessment of image quality and optimal reconstruction window in retrospective ECG-gated multislice CT at 375-ms gantry rotation time

Our objective was to evaluate the image quality of a 16-slice CT system with a rotation time of 375 ms in the assessment of coronary arteries. One hundred patients underwent iodine-enhanced CT coronary angiography within a single breath hold. Images were reconstructed in diastole, 300, 350, 400, 450...

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Bibliographic Details
Published in:European radiology 2005-02, Vol.15 (2), p.296-304
Main Authors: Hamoir, Xavier L, Flohr, Thomas, Hamoir, Vincent, Labaki, Laurent, Tricquet, Jean-Yves, Duhamel, Alain, Kirsch, Jacques
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Analysis of Variance
Angiography
Arteries
Chi-Square Distribution
Computed tomography
Contrast Media
Coronary artery
Coronary Disease - diagnostic imaging
Coronary vessels
Diastole
EKG
Electrocardiography
Female
Heart rate
Humans
Image enhancement
Image processing
Image Processing, Computer-Assisted
Image quality
Image reconstruction
Implants
Iodine
Male
Medical imaging
Middle Aged
Retrospective Studies
Rotation
Segments
Tomography, X-Ray Computed - methods
Veins & arteries
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Summary:Our objective was to evaluate the image quality of a 16-slice CT system with a rotation time of 375 ms in the assessment of coronary arteries. One hundred patients underwent iodine-enhanced CT coronary angiography within a single breath hold. Images were reconstructed in diastole, 300, 350, 400, 450, 500 and 550 ms prior to the onset of the next R-wave using absolute reverse retrospective ECG gating. The 15 coronary segments of the AHA classification were consensually reviewed by two radiologists. On the whole, best quality imaging was obtained with reconstruction intervals of -350 ms and -400 ms in high percentages of each segment (P
ISSN:0938-7994
1432-1084
DOI:10.1007/s00330-004-2541-8