A comparison of angiographic and electrocardiographically gated computed tomographic measurements of left-ventricular function.
Fifty patients with ischaemic heart disease have been studied by electrocardiographically gated computed tomography (CT) and left-ventricular angiography to assess the accuracy of the former in the measurement of left-ventricular volumes and ejection fraction. There was no significant difference in the measurements of end-diastolic volume (p = 0.9, r = 0.81). Computed tomography significantly overestimated end-systolic volume (p less than 0.001, r = 0.89) and significantly underestimated ejection fraction (p less than 0.001, r = 0.74). Although there is some variation between the two sets of measurements, the correlation between the two techniques is good, indicating that electrocardiographically gated CT could be a useful noninvasive technique for assessing left-ventricular function.
Foster
C J
CJ
Department of Cardiology, Manchester Royal Infirmary.
Brownlee
W C
WC
Griffin
J F
JF
Yates
J
J
Love
H G
HG
Isherwood
I
I
D000792:Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging* / Q000503:physiopathology; D004562:Electrocardiography; D006321:Heart / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D013318:Stroke Volume; D014057:Tomography, X-Ray Computed / Q000379:methods*