背景：三條冠狀動脈狹窄疾病的造影表現差異很大，可以從正常到非常廣泛的變化。本研究的目的在於評估三條冠狀動脈狹窄疾病的心肌血流造影類型及其與缺血性心室擴大及肺攝取的相關性。
方法：本研究包括182例經由心導管證實三條冠狀動脈挾窄疾病及做過心肌血流造影檢查的病患，我們根據心肌血流造影類型及其是否存在缺血性心室擴大與肺攝取，以卡方檢定分析各組間的差異及缺血性心室擴大與肺攝取的相關性。
結果：13例病患(7.1%)具正常心肌血流，45例病患(24.7%)的心肌血流缺損局限於一條冠狀動脈血流的範圍，84例病患(46.2%)的心肌血流缺損局限於二條冠狀動脈血流的範圍，40例病患(22%)的心肌血流缺損位於三條冠狀動脈血流的範圍。最常見的心肌血流造影類型為除了心室側壁的廣泛性心肌缺血(33.5%)，心室下壁為最常發生心肌血流缺損的區域(77.5%)。133例病患(73.1%)具有缺血性心室擴大，心肌血流缺損病患存在缺血性心室擴大的比率有意義的高於無心肌血流缺損病患(P<0.0001)。38例病患(20.9%)具有肺攝取，廣泛性心肌血流缺損(心肌血流缺損等於或大於二條冠狀動脈血流的範圍)的病患存在肺攝取的比率有意義的高於非廣泛性心肌血流缺損的病患(p=0.017)。
結論：評估心肌血流造影類型及其是否合併存在缺血性心室擴大及肺攝取有助於確認三條冠狀動脈狹窄疾病及分析其風險分類。

Background: The scintigraphic findings of trip/e-vessel coronary artery disease (TVD) may vary from normal to very extensive ones. This investigation is performed to evaluate the pedusion patterns of 2~'TI myocardial per- fusion scintigraphy and their relationship with transient ischemic dilation (TID) and increased lung thallium uptake (ILTU) in patients with TVD.
Methods: One hundred and eighty-two patients with myocardial perfusion scintigraphy and documented TVD in coronary angiography (CAG) were included. The scintigraphic findings were classified according to the perfusion patterns, and the presence or absence of TID and ILTU. Chi-squared analysis was used to deter- mine the significance of differences between the groups and correlation between TID and ILTU.
Results: Thirteen patients (7.1%) had normal perfusion (Group 1), 45 patients (24.7%) had the defects in one- vessel territory (Group 2), 84 patients (46.2%) had the defects in combined territories of two vessels (Group 3),and 40 patients (22%) had the defects in the territories of all three vessels (Group 4). The most common perfusion pattern was diffuse perfusion defects except pre- served lateral wall (33.5%), and the most common involved area was inferior wall (77.5%). TID was found in 133 patients (73.1%), and ILTU in 38 (20.9%). The presence of TID was significant higher for patients with perfusion defects than those without (P Conclusion: Combined assessment of perfusion pat- terns and associated TID and ILTU help to identify the patients with TVD and evaluate their risk stratification.