核素运动心肌灌注断层显像评估经皮冠状动脉腔内血管成形术的疗效

总结了３１例经皮冠状动脉腔内血管成形术（ＰＴＣＡ）前后作核素运动心肌灌注断层显像的病例，其中男性２５例，女性６例。ＰＴＣＡ前冠状动脉平均狭窄８２．５８％±１６．０４％，术后为１７．７％±６．２１％。运动心肌灌注断层显像显示ＰＴＣＡ术后心肌缺血完全消失及明显改善２６例（８３．９％）。９０．３％的病例ＰＴＣＡ术后运动试验较术前进步。认为运动心肌灌注断层显像可作为判断ＰＴＣＡ疗效的有效方法。

Evaluation of the PTCA Effect by Tomography Imaging of Exercise Stress Myocardial Nuclide-Perfusion

We performed stress and rest myocardial perfusion tomography imaging in 31 patients before and after percutaneous transluminal coronary angioplasty(PTCA). The median time intervals before and after PTCA were 7.5 and 47.5 days respectively. There were 25 males and 6 females. Mean lesion grade pre-PTCA was 82.58%±16.04 % and mean residual lesion grade post-PTCA was 17.7%±6.21%. No major complications were encountered. Myocardial perfusion tomography imaging showed 26 cases with myocardial ischemia reverted to normal or approximately normal after PTCA. In 90.3% of the patients exercise stress was more improved than before PTCA.We conclude that exercise stress myocardial tomography imaging is a noninvasive and reliable method for the assesssment of PTCA therapeutic effect.