Coronary Imaging Quality in Routine ECG-gated Multidetector CT Examinations of the Entire Thorax: Preliminary Experience with a 64-slice CT System in 133 Patients

Overview

Journal Eur Radiol

Specialty Radiology

Date 2006 Aug 31

PMID 16941087

Citations 9

Authors

Damien Delhaye

Martine Remy-Jardin

Randa Salem

Antoine Teisseire

Chadi Khalil

Valerie Delannoy-Deken

Alain Duhamel

Jacques Remy

Affiliations

Soon will be listed here.

Abstract

To evaluate image quality in the assessment of the coronary arteries during routine ECG-gated multidetector CT (MDCT) of the chest. One hundred and thirty three patients in sinus rhythm underwent an ECG-gated CT angiographic examination of the entire chest without beta-blockers with a 64-slice CT system. In 127 patients (95%), it was possible to assess the coronary arteries partially or totally; coronary artery imaging failed in six patients (5%), leading to a detailed description of the coronary arteries in 127 patients. Considering ten coronary artery segments per patient, 75% of coronary segments were assessable (948/1270 segments). When the distal segments were excluded from the analysis (i.e., seven coronary segments evaluated per patient), the percentage of assessable segments was 86% (768/889 proximal and mid coronary segments) and reached 93% (474/508) when assessing proximal segments exclusively. The mean number of assessable segments was significantly higher in patients with a heart rate < or =80 bpm (n=95) than in patients with a heart rate >80 bpm (n=38) (p<0.002). Proximal and mid-coronary segments can be adequately assessed during a whole-chest ECG-gated CT angiographic examination without administration of beta-blockers in patients with a heart rate below 80 bpm.

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