Lahiri A, Carboni G P, Crawley J W, Raftery E B
Br Heart J. 1982 Sep;48(3):260-4. doi: 10.1136/hrt.48.3.260.
Exercise and redistribution thallium-201 imaging is commonly used for the detection and evaluation of left ventricular ischaemia and infarction. The right ventricle is frequently visualised after stress and sometimes on redistribution images. The visualisation of the right ventricle at rest is thought to be abnormal and is suggestive of pressure or volume overload of the right ventricle, either a result of pulmonary hypertension or secondary to left ventricular dysfunction. Using stress and delayed 201Tl imaging we have shown reversible left and right ventricular ischaemia and fixed left ventricular perfusion defects in two patients with multivessel coronary artery disease and left ventricular dyskinesia caused by prior myocardial infarction. Judging by the rarity of this finding as well as taking into consideration 201Tl kinetics, it is suggested that reversible right ventricular ischaemia after exercise may only be detected in patients with coronary artery disease who have severely compromised ventricular function. This finding may have therapeutic and prognostic significance.
运动和再分布铊-201显像常用于检测和评估左心室缺血及梗死。右心室在负荷后常可显影，有时在再分布图像上也能显影。静息时右心室显影被认为是异常的，提示右心室压力或容量负荷过重，这可能是肺动脉高压的结果，或继发于左心室功能障碍。通过负荷和延迟铊-201显像，我们在两名患有多支冠状动脉疾病且因既往心肌梗死导致左心室运动障碍的患者中发现了可逆性左、右心室缺血以及固定性左心室灌注缺损。鉴于这一发现的罕见性，并考虑到铊-201的动力学情况，提示运动后可逆性右心室缺血可能仅在心室功能严重受损的冠心病患者中才能检测到。这一发现可能具有治疗和预后意义。
