Impact of a motion correction algorithm on quality and diagnostic utility in unselected patients undergoing coronary CT angiography

Impact of SSF on Diagnostic Performance of Coronary Computed Tomography Angiography Within 1 Heart Beat in Patients With High Heart Rate Using a 256-Row Detector Computed Tomography

“…Despite the mean HR higher than 75 bpm, the effective dose is lower than previous reports [1,6,9,10,13,14,16,19]. This is due to the use of one heart beat acquisition and prospectively ECG-gated CCTA was used in all patients.…”

“…Although SSF technique has been performed for several years, our study is the first report to document the impact of it on image quality, interpretability and diagnostic performance of one heart beat CCTA in patients with high HR using a latest 256-row detector CT scanner. Previous studies have showed that SSF as a vendor-specific for motion correction algorithm can improve image quality, interpretability [1,2,[6][7][8][9][10][13][14][15][16][17][18][19], and it also can improve diagnostic accuracy using a 64-row detector CT scanner [2,[6][7][8][9][10]. However, all of these studies were performed in patients with low HR and with resultant higher radiation dose.…”

Clinical evaluation of new automatic coronary-specific best cardiac phase selection algorithm for single-beat coronary CT angiography

“…First, we only include the high heart rate patients, so the efficiency of the SP in the low heart rate patients still needs to be verified. Second, we did not use this reconstruction method on the snapshot freeze technique, which will improve the image quality within the single-beat coronary angiography [ 19 , 20 ], as this study mainly focused on the comparison of SP and MS. Third, diagnostic accuracy of CCTA with use of the SP approach were not evaluated, further studies will be needed to investigate it.…”

Diagnostic performance of 256-row detector coronary CT angiography in patients with high heart rates within a single cardiac cycle: a preliminary study

“…Attempts have been made to improve the image quality by reducing the gantry rotation time, utilizing dual source acquisition techniques, increasing detector row and using motion correction algorithm such as snapshot freeze (SSF) technique to reduce motion artifacts. Sheta et al [7] reported that SSF reduced the motion artifacts by 30% to 41% in comparison with standard algorithm in patient with low HR. Several studies reported high diagnostic accuracy of CCTA using a dual source CT (DSCT) [8,10,11] and 64-detector row CT with SSF [12,13] in patients with high HR.…”

“…As a noninvasive imaging modality, CCTA is an ideal tool for quantifying the degree of stenosis and for characterizing atherosclerotic plaques [4,5]. One of the limitations of CCTA is the presence of motion-related artifacts due to inadequate temporal resolution, especially in patients with high heart rate (HR) [6,7]. Although the HR of some patients can be reduced with use of β-blockers, 5-11% of patients have contraindications to β-blockers [8] or higher doses of β-blockers are needed with longer time to wait before the scan can be performed [9].…”