61±10岁的244例患者被转来作~(201)铊心肌灌注成像负荷试验,前瞻性记录24小时动态心电图,评估ST段压低的出现率和功能意义。 A组162例心电图运动试验阳性,B组82例阴性。A组动态心电图有ST段压低者多于B组(33％对2％)。A组依临床所见确定冠心病的概率,高、中、低三个亚组动态心电图ST段压低的出现率均低于50％。A组32例有典型心绞痛,动态心电图5T段压低的出 A total of 244 patients aged 61 ± 10 years were referred to a thallium (201) myocardial perfusion imaging stress test and prospectively recorded 24-hour Holter monitoring to assess the incidence and functional significance of ST segment depression. A group 162 cases of electrocardiogram test was positive, B group 82 cases were negative. In group A, there were more ST-segment depression than in group B (33% vs 2%). In group A, the probability of coronary heart disease was determined according to clinical findings. The incidence of ST segment depression in the three subgroups of high, medium and low electrocardiograms was less than 50%. A group of 32 patients with typical angina pectoris, dynamic ECG 5T depression out