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SHR Neuro Cancer Cardio Lipid Metab Microb
Weininger, M; Ritter, C; Beer, M; Hahn, D; Beissert, M.
Evaluation of the optimal image reconstruction interval for coronary artery imaging using 64-slice computed tomography
Acta Radiol. 2007; 48(6):620-627
Doi: 10.1080/02841850701348697
Web of Science
PubMed
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- Co-authors Med Uni Graz
- Beer Meinrad
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- Abstract:
- Background: Cardiac computed tomography (CT) has become an established complement in cardiac imaging. Thus, optimized image quality is diagnostically crucial. Purpose: To prospectively evaluate whether, by using 64-slice CT, a specific reconstruction interval can be identified providing best image quality for all coronary artery segments and each individual coronary artery. Material and Methods: 311 coronary segments of 14 men and seven women were analyzed using 64-slice CT. Data reconstruction was performed in 5% increments from 5-100% of the R-R interval. Four experienced observers independently evaluated image quality of the coronary arteries according to the AHA classification. A three-point ranking scale was applied: 1, very poor, no evaluation possible; 2, diagnostically sufficient quality; 3, highest image quality, no artifacts. Results: The best reconstruction point for all segments was found to be 65% of the R-R interval (mean value 2.4 +/- 0.5; P < 0.05). On a per-artery basis, best image quality was again achieved at 65% of the R-R interval: RCA 2.2 +/- 0.4, LCA 2.4 +/- 0.5, LM 2.5 +/- 0.2, LAD 2.3 +/- 0.4, LCX 2.3 +/- 0.5. Conclusion: By using 64-slice CT, the need for adjusting the reconstruction point to each coronary segment might be overcome. Best image quality was achieved with image reconstruction at 65% of the R-R interval for all coronary segments as well as each coronary artery.
- Find related publications in this database (using NLM MeSH Indexing)
- Adult -
- Aged -
- Coronary Angiography - methods
- Coronary Artery Disease - diagnosis
- Female -
- Humans -
- Image Processing, Computer-Assisted - methods
- Male -
- Middle Aged -
- Observer Variation -
- Prospective Studies -
- Reproducibility of Results -
- Time Factors -
- Tomography, X-Ray Computed - methods
- Find related publications in this database (Keywords)
- cardiac
- CT
- CT angiography
- CT spiral
- heart
- technical aspects