Sure exposure 3d standard

All examinations were performed using a 320‐row computed tomographic system (Aquilion ONE; Toshiba Medical Systems, Tokyo, Japan) with patients in the supine position on a table, and images were acquired during a single breath hold, which allows image reconstruction in a single cardiac phase. Dual scanograms were used for planning the examination and determining the anatomical range to be covered. A nonenhanced prospective ECG‐gated scan was performed to measure the coronary artery calcium score (CACS) with the following parameters: rotation time, 275 ms; slice collimation, 0.5 mm; slice width, 3.0 mm; tube voltage, 100 kV; and automatic tube current modulation (SURE Exposure 3D standard, Toshiba Medical Systems Corporation, Otawara, Japan). Images were analyzed in a core workstation using dedicated software (TeraRecon version 4.4.11.82.3430.Beta, Foster City, CA). Agatston calcium scores were calculated to quantify the extent of coronary artery calcification.13, 14

Participants were scanned using 320-detector row computed tomography (Aquillion ONE; Toshiba Medical Systems Corporation, Tokyo, Japan). A nonenhanced prospective electrocardiogram was performed to measure the CAC score with the following parameters: rotation time, 275 ms; slice collimation, 0.5 mm; slice thickness, 3.0 mm; tube voltage, 100 kV; and automatic tube current modulation (SURE Exposure 3D standard; Toshiba Medical Systems Corporation, Otawara, Japan). Images were analyzed in a core workstation by using dedicated software (TeraRecon V. 4.4.11.82.3430.Beta; TeraRecon, Foster City, CA). The CAC score was measured using the Agatston method.^{[29 (link),30 (link)]}The total CAC score was the sum of all individual calcified lesions identified within the area of the coronary arteries. CAC scores >100 U indicated CAC.^{[22 (link),31 (link)]}

The patients were scanned by using a 320-detector row computed tomography (CT) scanner (Aquillion ONE; Toshiba Medical Systems Corporation, Tokyo, Japan). A non-enhanced prospective electrocardiogramgated CT scan was performed to measure the coronary artery calcium score (CACS) with the following parameters: rotation time 275 ms, slice collimation 0.5 mm, slice thickness 3.0 mm, tube voltage 100 kV, and automatic tube current modulation (SURE Exposure 3D standard; Toshiba Medical Systems Corporation, Otawara, Japan). Images were analyzed in a core workstation by using dedicated software (TeraRecon V. 4.4.11.82.3430.Beta, Foster City, CA, USA). CACS was calculated by using the Agatston method^{12 (link), 13 (link))}.