Value of 3D-Volume Rendering in the Assessment of Coronary Arteries with Retrospectively Ecg-Gated Multislice Spiral Ct
Article first published online: 12 MAY 2003
Volume 44, Issue 3, pages 302–309, May 2003
How to Cite
Mahnken, A. H., Wildberger, J. E., Sinha, A. M., Dedden, K., Stanzel, S., Hoffmann, R., Schmitz-Rode, T. and Günther, R. W. (2003), Value of 3D-Volume Rendering in the Assessment of Coronary Arteries with Retrospectively Ecg-Gated Multislice Spiral Ct. Acta Radiologica, 44: 302–309. doi: 10.1034/j.1600-0455.2003.00057.x
- Issue published online: 12 MAY 2003
- Article first published online: 12 MAY 2003
- Accepted for publication 20 January 2003.
- Coronary vessels;
- computed tomography;
- computed tomography (CT);
Purpose: To assess the diagnostic value and measurement precision of 3D volume rendering technique (3D-VRT) from retrospectively ECG-gated multislice spiral CT (MSCT) data sets for imaging of the coronary arteries.
Material and Methods: In 35 patients, retrospectively ECG-gated MSCT of the heart using a four detector row MSCT scanner with a standardized examination protocol was performed as well as quantitative X-ray coronary angiography (QCA). The MSCT data was assessed on segmental basis using 3D-VRT exclusively. The coronary artery diameters were measured at the origin of each main coronary branch and 1 cm, 3 cm and 5 cm distally. The minimum, maximum and mean diameters were determined from MSCT angiography and compared to QCA.
Results: A total of 353 of 525 (67.2%) coronary artery segments were assessable by MSCT angiography. The proximal segments were more often assessable when compared to the distal segments. Stenoses were detected with a sensitivity of 82.6% and a specificity of 92.8%. According to the Bland-Altman method the mean differences between QCA and MSCT ranged from −0.55 to 1.07 mm with limits of agreement from −2.2 mm to −2.7 mm.
Conclusion: When compared to QCA, the ability of 3D-VRT to quantitatively assess coronary artery diameters and coronary artery stenoses is insufficient for clinical purposes.