Comparison of prospectively electrocardiographic triggered spiral and sequential acquisition for coronary computed tomographic angiography using dual-source computed tomography.
- Author:
Luo LI
1
;
Yi-ning WANG
;
Lian-yan KONG
;
Zhi-wei WANG
;
Kang ZHOU
;
Jin CHEN
;
Wen-bin MAO
;
Yun WANG
;
Zheng-yu JIN
Author Information
- Publication Type:Journal Article
- MeSH: Aged; Coronary Angiography; methods; Coronary Artery Disease; diagnostic imaging; Female; Humans; Male; Middle Aged; Radiation Dosage; Tomography, Spiral Computed; methods; Tomography, X-Ray Computed; methods
- From: Acta Academiae Medicinae Sinicae 2010;32(6):607-610
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo compare the image quality and radiation dose of prospectively electrocardiogram (ECG) -triggered spiral and sequential acquisition for coronary computed tomographic angiography by dual-source computed tomography.
METHODSSixty patients with suspected or known coronary artery disease were randomly divided into two groups. Group A underwent prospective ECG-triggering spiral scan and Group B underwent prospective ECG-triggering sequential scan. Both the image quality and radiation dose of the two groups were compared.
RESULTSThere was no significant difference in age and body mass index of the two groups. The average image quality score was 1.12 ± 0.38 in group A and 1.14 ± 0.38 in group B (Z=-0.291,P=0.771) . The rates of diagnostic coronary segments for two groups were 98.87% and 99.56% respectively (X2=0.59,P=0.443) . The mean radiation dose of group A was significantly lower than that of group B [ (1.31 ± 0.30) mSv vs. (3.36 ± 0.93) mSv; t=11.47, P=0.000] .
CONCLUSIONCompared with the prospective ECG-triggered sequential acquisition, the prospective ECG - triggered spiral scan for coronary computed tomographic angiography can remarkably reduce radiation dose without impairing image quality in patients with a low and stable heart rate (≤ 70 bpm) .
