Detecting Triple-Vessel Disease with Cadmium Zinc Telluride-Based Single-Photon Emission Computed Tomography Using the Intensity Signal-to-Noise Ratio between Rest and Stress Studies

Table 1

Demographic characteristics of study participants ().

Characteristic	All	Control	TVD
	102	61	41
Age (yr)	62.6 ± 12.5	60.3 ± 13.3
Female sex	37	19	18
Hypertension	78	39	39
Body mass index (kg/m^2)	25.9 ± 4.9	26.5 ± 5.2	25.1 ± 4.4
Dyslipidemia	48	24	24
Diabetes	39	15	24
Tobacco use	25	18	7
Angina	74	44	30
LVEF (%)	57.4 ± 17.2	55.7 ± 18.2	59.9 ± 15.4
Arrhythmia	22	16	6
ECG ST change	33	17	16
NYHA class
I	76	41	35
II	17	14	3
III	6	5	1
IV	3	1	2

TVD, triple-vessel disease; LVEF, left ventricular ejection fraction; ECG, electrocardiography; NYHA, New York Heart Association; denotes a statistical significance in the mean difference between the control and TVD subjects ().