Research Article
Sinogram-Affirmed Iterative Reconstruction Negatively Impacts the Risk Category Based on Agatston Score: A Study Combining Coronary Calcium Score Measurement and Coronary CT Angiography
Table 4
Patients’ number (n2) in different risk categories of patients with coronary artery stenosis () between FBP and all levels of SAFIRE.
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FBP: filtered back projection; SAFIRE: sinogram-affirmed iterative reconstruction.#The only patient whose Agatston score decreased to zero using SAFIRE 4 had no significant stenosis. The percentages (n2/49) were gradually increased for the low risk category (e.g., and ) but decreased for the high risk category (e.g., ) from FBP to SAFIRE 5. ▲The prevalence (n2/n1) of coronary artery stenosis was gradually increased for the low risk category (e.g., and ) from FBP to SAFIRE 5. ★ compared with FBP; ◎ compared with SAFIRE 1; ■ compared with SAFIRE 2. |