1.   Doctors had made an incision in her groin, punctured an artery, threaded in a tube and snaked it up into her heart.

2.   An angiogram involves puncturing an artery, usually in the groin, and inserting a tube up into the chest arteries that feed the heart.

3.   An angiogram involves puncturing an artery, usually in the groin, and threading a tube up into the chest arteries that feed the heart.

4.   Angiograms involve puncturing an artery, usually in the groin, and threading a tube into the chest arteries that feed the heart.

5.   The invasive, delicate test involves puncturing an artery, usually in the groin, and inserting a tube up into the chest arteries that feed the heart.

6.   The test involves puncturing an artery, usually in the groin, and threading a tube up into the chest arteries that feed the heart.