1.   Cheney said the doctors had not explained why tests performed in July did not provide hints whether the diagonal artery was blocked.

2.   For example, when Reiner steered a catheter around a bend to reach the diagonal artery, the agent likened it to banking a pool shot off the rail.

3.   Soon, the doctors detected that the diagonal artery, a branch of the bigger left anterior descending artery, was almost completely blocked.

4.   The test identified the blockage in the diagonal artery.

5.   There was nearly complete blockage of another coronary artery, one known as the first diagonal artery.

6.   Two were used to bypass blockages in the obtuse artery, one for the right coronary artery and the fourth for the diagonal artery.

7.   Two were used to bypass blockages in the obtuse artery, the third for the right coronary artery and the fourth for the diagonal artery.