TABLE 1

Patient Characteristics of 4 Groups Included in Study

Study objectives	No. of patients	Acquisition conditions	Coronary artery disease
Normal database	186	Stress, rest: ²⁰¹Tl, ^99mTc	Low probability
Sector assignment	60	Rest: ^99mTc, ²⁰¹Tl	Single-vessel occlusion with myocardial infarct
Reproducibility	49	Stress, rest: ^99mTc, ²⁰¹Tl	High probability
Software performance	48	Rest: ^99mTc	From single- to triple-vessel disease with myocardial infarct