Reduced artifacts and improved diagnostic value of 640-slice computed tomography in patients with cardiac pacemakers

The Journal of International Medical Research
Guoquan CaoZhen Wang

Abstract

The aim of this study was to compare the feasibility of 640-slice with 64-slice computed tomography (CT) coronary angiography for diagnosing coronary lesions in patients with pacemakers. Forty-five and 50 patients with pacemakers and with suspected or known coronary artery disease underwent 64-slice (64 group) and 640-slice (640 group) CT scans, respectively. All segments of the vessels were evaluated according to the 15-segment model recommended by the American Heart Association. The incidence of moderate or severe artifacts was significantly lower (7.27% vs. 32.17%) and the diagnosable rate for coronary lesions was higher (98.91% vs. 94.19%) in the 640 compared with the 64 group. In the 64 group, the incidence of artifacts in patients with a heart rate >65 bpm (20.98%) was higher than in those with a heart rate <65 bpm (15.67%), although the difference was not significant, while the incidence of artifacts was significantly higher in patients with heart arrhythmia (21.40%) compared with in those with normal heart rhythm (15.09%). Among patients with pacemakers and a higher heart rate or heart arrhythmia, 640-slice CT may be more effective than 64-slice CT for diagnosing coronary lesions, by reducing moderate and severe artifacts.

References

Aug 15, 1992·The American Journal of Cardiology·E LazzeroniG Botti
Aug 16, 2005·International Journal of Cardiology·Giancarlo CasoloGianfranco Gensini
Dec 8, 2005·European Radiology·David MaintzRoman Fischbach
May 16, 2006·European Radiology·Sebastian LeschkaHatem Alkadhi
Apr 28, 2007·Radiology·Cynthia H McColloughJohn R Buysman
Nov 7, 2007·The Tohoku Journal of Experimental Medicine·Mustafa KaracaBülent Gurcay
May 16, 2009·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Dimitrios TziakasGeorgios Bougioukas
Jan 19, 2011·Heart, Lung & Circulation·Patricia J M BestUNKNOWN Women in Innovations (WIN) group of the Society of Cardiac Angiography and Intervention
Apr 21, 2011·Heart and Vessels·Rafal MlynarskiMichał Tendera

❮ Previous
Next ❯

Software Mentioned

BOOST

Related Concepts

Related Feeds

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.