Applications of retrospective electrocardiogram editing in dual-source computed tomography coronary angiography in patients with arrhythmia.
- Author:
Yan-fu SHEN
1
;
Lei YIN
;
Xiao-mei ZHENG
;
Ming-beng MA
;
Xiao-lan WU
;
Jia-wei SU
;
Tian-hui ZHENG
;
Lie-xin LIN
;
Rui-bin DU
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Aged; Aged, 80 and over; Arrhythmias, Cardiac; diagnostic imaging; Coronary Angiography; methods; Electrocardiography; Female; Humans; Image Processing, Computer-Assisted; methods; Male; Middle Aged; Tomography, X-Ray Computed; methods
- From: Acta Academiae Medicinae Sinicae 2010;32(6):671-676
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the clinical value of retrospective electrocardiogram (ECG) -editing technique in dual-source computed tomography (CT) coronary angiography in patients with arrhythmia.
METHODSTotally 73 patients with arrhythmia during dual-source CT coronary angiography were included into this study. A retrospective gating technique and ECG-editing technique (Insert Sync; Disable Sync; Delete Sync; Shift R-peak) were used in patients who needed ECG-editing. Two experienced radiologists evaluated in consensus all pre-editing and post-editing reconstructed images and recorded scores according to the American Heart Association guidelines on coronary segmentation on a per segment basis. Image quality of all coronary segments was assessed using a four-point grading scale from excellent (4 scores) to non-assessable (1 score) .
RESULTSThe overall mean image quality of 34 patients who did not need ECG-editing was 3.42 ± 0.20. In 39 patients who needed ECG-editing, the overall mean image quality before and after ECG-editing was 2.39?0.37 and 3.22?0.24. The mean image quality in every segment between pre-editing and post-editing was also significantly different (P<0.01) .
CONCLUSIONECG-editing technique can remarkably improve image quality of coronary artery segments by reducing or even eliminating the artifact produced by arrhythmia during dual-source CT coronary angiography.