Coronary CT angiography incorporating Doppler-guided prospective ECG gating in patients with high heart rate: comparison with results of traditional prospective ECG gating.

ABSTRACT:

Purpose

As Doppler ultrasound has been proven to be an effective tool to predict and compress the optimal pulsing windows, we evaluated the effective dose and diagnostic accuracy of coronary CT angiography (CTA) incorporating Doppler-guided prospective electrocardiograph (ECG) gating, which presets pulsing windows according to Doppler analysis, in patients with a heart rate >65 bpm.

Materials and methods

119 patients with a heart rate >65 bpm who were scheduled for invasive coronary angiography were prospectively studied, and patients were randomly divided into traditional prospective (n = 61) and Doppler-guided prospective (n = 58) ECG gating groups. The exposure window of traditional prospective ECG gating was set at 30%-80% of the cardiac cycle. For the Doppler group, the

SUBMITTER: Li M 

PROVIDER: S-EPMC3656032 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature