Comparison of epicardial adipose tissue volume quantification between ECG-gated cardiac and non-ECG-gated chest computed tomography scans

Table 1 CT acquisition and reconstruction parameters in three cohorts

Paired CT dataset	Cohort 1 (N = 49)		Cohort 2 (N = 34)		Cohort 3 (N = 32)
Paired CT dataset	ECG-gated Cardiac NCCT	Non-ECG-gated Chest NCCT	ECG-gated Cardiac NCCT	Non-ECG-gated Chest NCCT	Non-ECG-gated Chest NCCT	Non-ECG-gated Chest arterial CECT	Non-ECG-gated Chest venous CECT
ECG gate	Yes	No	Yes	No	No	No	No
Field of view	150 ~ 170 × 150 ~ 170 mm	360 × 300 ~ 360 mm	150 ~ 170 × 150 ~ 170 mm	360 × 300 ~ 360 mm	360 × 300 ~ 360 mm	360 × 300 ~ 360 mm	360 × 300 ~ 360 mm
Matrix size	512 × 512	512 × 512	512 × 512	512 × 512	512 × 512	512 × 512	512 × 512
Tube voltage (kVp)	120	120	120	100	120	120	120
Contrast given	No	No	No	No	No	Yes, arterial phase	Yes, venous phase
Collimation (mm)	128 × 0.6	128 × 0.625	128 × 0.6	128 × 0.625	128 × 0.625	128 × 0.625	128 × 0.625
Gantry rotation time (ms)	330	350	330	350	350	350	350
Pitch	0.24	1.2	0.24	1.2	1.2	1.2	1.2
Reconstructed slice thickness (mm)	3	1.25 and 5	3	1.25 and 5	1.25 and 5	1.25 and 5	1.25 and 5

ECG, electrocardiogram, NCCT, non-contrast computed tomography, CECT, contrast-enhanced computed tomography

ISSN: 1471-2261