Currently more than 1 million percutaneous coronary interventions (PCI) are performed in the United States annually. There is a growing trend to perform procedures utilizing the TRA due to recent data demonstrating decreased bleeding and access-site complications compared to the femoral approach. However, the TRA approach is also know to be associated with greater radiation exposure compared to the femoral approach. Furthermore, the TRA to catheterization may be difficult in certain populations because of anatomic considerations. Though traditionally completed via canalization of the right radial artery (RRA) due to feasibility with room setup, left radial artery (LRA) access may be superior due to the shorter distance needed to reach the ascending aorta and bypassing the tortuosity of the right subclavian artery. Given the benefits of the TRA, it is important to determine how left versus right radial artery access affects parameters of radiation exposure in addition to procedural difficulty.