Tamaki N, Kodama S, Yonekura Y, Mukai T, Torizuka K, Tamaki S, Nohara R, Suzuki Y, Kambara H, Kawai C
J Cardiogr. 1985 Mar;15(1):1-11.
Stress thallium-201 emission computed tomography (ECT) was performed for 24 patients with myocardial infarction for quantitative evaluation of regional thallium redistribution and washout. ECT was performed using a rotating gamma camera 10 minutes and 2.5 hours after thallium injection during maximal exercise. Three short-axis sections and one central long-axis section were selected for the circumferential profile curves. Redistribution (%) and washout (%) were calculated from the stress and redistribution profile curves in each section. These parameters were evaluated by comparison with regional wall motion on radiographic contrast ventriculography. Forty-eight of the 52 segments (92%) with normal thallium uptake showed normal wall motion. Among the segments with abnormal thallium uptake, normal or hypokinetic wall motion was observed in 12 of 13 segments (92%) with more than 20% redistribution and in 16 of 19 segments (84%) with 10-20% redistribution, while it was observed in only 15 of 36 segments (42%) without redistribution (p less than 0.001). Among 48 infarcted segments, 16 segments (33%) showed significant redistribution on ECT analysis. Normal or hypokinetic wall motion was observed in three of five segments (60%) with more than 20% redistribution, and in 10 of 11 segments (91%) with 10-20% redistribution, while it was seen in only eight of 30 segments (17%) without redistribution (p less than 0.005).
对24例心肌梗死患者进行了负荷铊-201发射计算机断层扫描（ECT），以定量评估局部铊再分布和洗脱情况。在最大运动期间铊注射后10分钟和2.5小时，使用旋转γ相机进行ECT检查。选择三个短轴切面和一个中央长轴切面绘制圆周轮廓曲线。根据每个切面的负荷和再分布轮廓曲线计算再分布率（%）和洗脱率（%）。通过与放射造影心室造影的局部室壁运动进行比较来评估这些参数。52个铊摄取正常的节段中有48个（92%）室壁运动正常。在铊摄取异常的节段中，13个再分布超过20%的节段中有12个（92%）、19个再分布为10%-20%的节段中有16个（84%）观察到正常或运动减弱的室壁运动，而在36个无再分布的节段中只有15个（42%）观察到这种情况（p<0.001）。在48个梗死节段中，16个节段（33%）在ECT分析中显示有明显再分布。5个再分布超过20%的节段中有3个（60%）、11个再分布为10%-20%的节段中有10个（91%）观察到正常或运动减弱的室壁运动，而在30个无再分布的节段中只有8个（17%）观察到这种情况（p<0.005）。
