These minor changes in blockages caused a 300 percent improvement in blood flow, and using cardiac positron emission tomography, or "PET," scans, blue and black is no blood flow, orange and white is maximal.
这些血管阻塞上的微小改变， 使血流有了百分之三百的改善， 使用心脏正电子放射层扫描术，即PET扫描， 蓝色和黑色显示无血流，橘黄和白色显示最大血流。