Format

Send to

Choose Destination
See comment in PubMed Commons below
J Comput Assist Tomogr. 2014 May-Jun;38(3):444-50. doi: 10.1097/RCT.0000000000000044.

Image quality with single-heartbeat 320-multidetector computed tomographic coronary angiography.

Author information

  • 1From the *University of Edinburgh/British Heart Foundation Centre for Cardiovascular Science, †Clinical Research Imaging Centre, University of Edinburgh; and ‡Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.

Abstract

OBJECTIVE:

We aimed to establish the feasibility of single-heartbeat 320-multidetector computed tomographic coronary angiography (CTCA) and assess variables affecting image quality.

METHODS:

Consecutive patients (n = 249, 38% male) underwent CTCA. Two observers assessed image quality using a 4-point scale (1, excellent; 4, poor).

RESULTS:

Mean heart rate was 60 beats per minute (95% confidence interval, 59-62); body mass index, 29 kg/m (28-30); and dose-length product, 283 mGy·cm (266-301). During scanning, 133 (51%) received sublingual glyceryl trinitrate (GTN), 9 (4%) had ectopics, and 12 (5%) had atrial fibrillation. Diagnostic image quality was obtained in 99% with mean image quality of 1.4 (1.3, 1.5). Age, sex, atrial fibrillation, ectopics, diabetes mellitus (12%), and obstructive disease were not related to image quality. A lower heart rate and GTN were associated with improved image quality (P ≤ 0.001).

CONCLUSIONS:

Optimal image quality in single-heartbeat 320-multidetector CTCA is achievable in 99% of unselected patients. Image quality is improved by lower heart rate and GTN.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Lippincott Williams & Wilkins
    Loading ...
    Write to the Help Desk