2018 Volume 74 Issue 7 Pages 692-699
Purpose: The purpose of the study was to examine the metal artifact-reducing effects of single energy metal artifact reduction (SEMAR) at different rotation time. Methods: Helical and volume scans were employed to photograph a self-made phantom at various rotation time. Metal artifacts were examined using artifact index (AI) values and visual scores. Results: At rotation times of 0.35, 0.4, 0.5, 0.6, 0.75, and 1.0 s/rotation on the helical scans (SEMAR-ON), AI values were 66.6, 64.3, 39.7, 39.7, 40.8, and 15.4, respectively, and visual scores were 3.2, 3.4, 3.0, 3.1, 3.0, and 2.8, respectively. Similar results were obtained on the volume scans. Specifically, the AI values reduced with a decreasing rotation time, although the visual scores did not significantly differ with a rotation time changes. Conclusion: The metal artifact-reducing effects of SEMAR are not altered by the rotation time.
