Figure 1.

Angiographic images showing a bridge on the left anterior descending coronary artery (LAD) in a male patient of 65 years. A1) Right anterior oblique view taken at end systole. The compressed vessel segment is indicated by the two arrows. B1) Left anterior oblique view taken nearly at the same instant. A2) Same view as in A1, but taken 133 ms later. The tunneled segment is no longer compressed. B2) Same view as in B1 but 133 ms later.