Image quality of 256-slice computed tomography for coronary angiography

Shu Ping Chao, Jyh Gang Leu, Wai Yip Law, Chu Jen Kuo, Kou Gi Shyu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose: To assess the image quality of 256-slice computed tomographic angiography (CTA) and to identify possible impact factors associated with image quality. Methods: From November 2009 to January 2010, 506 patients underwent 256-slice CTA at our institute. A total of 451 patients were enrolled in our study, after 55 patients were excluded because of prior bypass surgery and stenting. CTA image quality was graded by two observers using a 4-point scale: excellent (score 1), good (score 2), moderate (score 3), poor and non-diagnostic (score 4). The coronary arteries were divided into 15 segments. Image quality was correlated to the subjects' age, gender, body mass index, heart rate, and calcium scores. Results: We evaluated 6650 coronary segments from CTA images of our enrolled 451 patients. The mean image quality score of all coronary segments was 1.14. Most coronary segments (99.7%) were assessable, and only 21 segments (0.3%) were non-diagnostic. A total of 5824 coronary segments were classified as having excellent image quality. Forty-two patients (9.3%) required control of heart ratewith beta-blockers before CTA could be performed. Male patients had better image quality than female patients. Heart rate and severity of calcification were impact factors associated with image quality. Conclusions: Examination with 256-slice CTA provides good image quality and can effectively evaluate most coronary segments.

Original languageEnglish
Pages (from-to)444-450
Number of pages7
JournalActa Cardiologica Sinica
Volume29
Issue number5
Publication statusPublished - Sep 2013

Fingerprint

Coronary Angiography
Angiography
Heart Rate
Computed Tomography Angiography
Coronary Vessels
Body Mass Index
Calcium

Keywords

  • Coronary angiography
  • Heart rate
  • Image quality
  • Multi-slice computed tomography

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Chao, S. P., Leu, J. G., Law, W. Y., Kuo, C. J., & Shyu, K. G. (2013). Image quality of 256-slice computed tomography for coronary angiography. Acta Cardiologica Sinica, 29(5), 444-450.

Image quality of 256-slice computed tomography for coronary angiography. / Chao, Shu Ping; Leu, Jyh Gang; Law, Wai Yip; Kuo, Chu Jen; Shyu, Kou Gi.

In: Acta Cardiologica Sinica, Vol. 29, No. 5, 09.2013, p. 444-450.

Research output: Contribution to journalArticle

Chao, SP, Leu, JG, Law, WY, Kuo, CJ & Shyu, KG 2013, 'Image quality of 256-slice computed tomography for coronary angiography', Acta Cardiologica Sinica, vol. 29, no. 5, pp. 444-450.
Chao SP, Leu JG, Law WY, Kuo CJ, Shyu KG. Image quality of 256-slice computed tomography for coronary angiography. Acta Cardiologica Sinica. 2013 Sep;29(5):444-450.
Chao, Shu Ping ; Leu, Jyh Gang ; Law, Wai Yip ; Kuo, Chu Jen ; Shyu, Kou Gi. / Image quality of 256-slice computed tomography for coronary angiography. In: Acta Cardiologica Sinica. 2013 ; Vol. 29, No. 5. pp. 444-450.
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