Tanaka T, Aizawa T, Kato K, Ogasawara K, Kirigaya H, Okamoto K, Hosoi H
Cardiovascular Institute, Tokyo.
Kaku Igaku. 1991 Sep;28(9):1035-40.
Rest Tl-201 myocardial SPECT images were underwent in 19 patients with anterior wall myocardial infarction under PTCR one month after the onset of acute myocardial infarction. The relationship between shortening rate (SR) of the left ventricle estimated by radial method and corresponding %Tl-201 uptake obtained by circumferential profile analysis was studied. For each patients 10 points on the anterior wall were taken into consideration. Seven patients showed depressive flat profile curve and 12 patients showed slant curve, in which %Tl-201 uptake continuously decreased from base to apex. Well correlation was obtained between SR and %Tl-201 uptake (SR = -41.2 +/- 1.03% Tl-201 uptake, r = 0.54, p less than 0.001). Average %Tl-201 uptake corresponding to SR = 0 was 46.3 + 6.8% (36-58). The sensitivity of %Tl-201 uptake greater than or equal to 60% for SR greater than or equal to 20% was 97% (87/90) and specificity was 69% (31/45). Tl-201 myocardial SPECT images were useful for estimating myocardial viability and %Tl-201 uptake was one of excellent parameters for quantitatively estimating myocardial viability.
19例急性心肌梗死发作1个月后接受PTCR治疗的前壁心肌梗死患者进行了静息铊-201心肌单光子发射计算机断层扫描（SPECT）成像。研究了通过径向法估计的左心室缩短率（SR）与通过圆周轮廓分析获得的相应铊-201摄取百分比之间的关系。对于每位患者，考虑前壁上的10个点。7例患者显示抑郁型平坦轮廓曲线，12例患者显示倾斜曲线，其中铊-201摄取百分比从基底到心尖持续下降。SR与铊-201摄取百分比之间获得了良好的相关性（SR=-41.2±1.03%铊-201摄取，r=0.54，p<0.001）。对应于SR=0的平均铊-201摄取百分比为46.3+6.8%（36-58）。铊-201摄取百分比≥60%对于SR≥20%的敏感性为97%（87/90），特异性为69%（31/45）。铊-201心肌SPECT成像有助于评估心肌活力，铊-201摄取百分比是定量评估心肌活力的优秀参数之一。
