Sinogram-Affirmed Iterative Reconstruction Negatively Impacts the Risk Category Based on Agatston Score: A Study Combining Coronary Calcium Score Measurement and Coronary CT Angiography

Figure 1

An example in a 71-year-old woman with suspected coronary artery disease. (a–f) Transverse CT images reconstructed with FBP (a), SAFIRE 1 (b), SAFIRE 2 (c), SAFIRE 3 (d), SAFIRE 4 (e), and SAFIRE 5 (f) and 3.0 mm reconstruction slice thickness. A calcified plaque located in the proximal segment of the left anterior descending artery is clearly shown in FBP and SAFIRE 1-5 images with the total Agatston score of 179.3, 163.9, 157.8, 154.2, 145.4, and 134.9, respectively. (g–i) Curved planar reformation of the left anterior descending artery (g), transverse CT image (h), and volume rendered reformatted image (i) in CCTA. A moderate stenosis caused by this calcified plaque is located in the proximal segment of the left anterior descending artery.

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