Hand vs. wrist: which route is better for heart scans?

This study looked at two methods for performing coronary angiography, a procedure that takes pictures of the heart's blood vessels. The standard method goes through an artery at the wrist, while the newer method uses an artery in the back of the hand (called the snuff box). The goal was to see if the snuff box approach works just as well as the wrist approach. The study included 326 adults scheduled for a diagnostic heart scan.