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 1

Patient demographic, clinical, and CT acquisition characteristics.

Variables	Study population
Sex ()	57/32 (M/F)
Age (years)
Height (m)
Body weight (kg)
Body mass index (kg/m^2)
Scan HR (bpm)
Coronary artery calcium scanning	74.5 (65.0-84.8)
CCTA examination
Cardiovascular risk factors
Hypertension	44 (49.4%)
Hypercholesterolemia	15 (16.9%)
Diabetes mellitus	13 (14.6%)
Smoking	17 (19.1%)
Family history of CAD	1 (1.1%)
Chest symptoms
Atrial premature beats	4 (4.5%)
Atrial flutter	1 (1.1%)
Atrial fibrillation	4 (4.5%)
Other ECG abnormalities	10 (11.2%)
Paroxysmal tachycardia	4 (4.5%)
Palpitation	6 (6.7%)
Precordial pain or discomfort	9 (10.1%)
Chest distress or pain	33 (37.1%)
Coronary artery calcium scanning
CTDIvol (mGy)
DLP (mGycm)	31.0 (26.0-40.0)
ED (mSv)
CCTA examination
CTDIvol (mGy)	31.0 (24.4-42.9)
DLP (mGycm)	366.0 (261.0-501.0)
ED (mSv)	5.1 (3.7-7.0)

HR: heart rate; bpm: beats per minute; CCTA: coronary CT angiography; CAD: coronary artery disease; ECG: electrocardiograph; CTDI_vol: volumetric CT dose index; DLP: dose-length product; ED: effective dose.