Applications of retrospective electrocardiogram editing in dual-source computed tomography coronary angiography in patients with arrhythmia / 中国医学科学院学报
Acta Academiae Medicinae Sinicae
;
(6): 671-676, 2010.
Article
in Chinese
| WPRIM
| ID: wpr-341477
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the clinical value of retrospective electrocardiogram (ECG) -editing technique in dual-source computed tomography (CT) coronary angiography in patients with arrhythmia.</p><p><b>METHODS</b>Totally 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) .</p><p><b>RESULTS</b>The 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) .</p><p><b>CONCLUSION</b>ECG-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.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Arrhythmias, Cardiac
/
Image Processing, Computer-Assisted
/
Diagnostic Imaging
/
Tomography, X-Ray Computed
/
Coronary Angiography
/
Electrocardiography
/
Methods
Type of study:
Diagnostic study
/
Practice guideline
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
Acta Academiae Medicinae Sinicae
Year:
2010
Type:
Article
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