In an original study in this issue of CRM , Colombo et al. [1] compared the safety and efficacy of left internal mammary (LIMA) graft imaging in stable coronary subjects using right radial access (employing the Bartorelli-Cozzi 5.2 French diagnostic catheters, n = 190) versus femoral artery access (using LIMA catheters, n = 190). The success rate of trans-right radial imaging was significantly lower compared to the femoral approach (62 % versus 97 %). Imaging failures were especially high among older subjects (Age > 67). There were no safety issues among the transradial group in the hands of these experienced, talented, and skillful investigators. The most common causes of failure were the combination of hostile aortic and great vessels anatomy and vascular rigidity. Even more intriguing was the fact that none of these 380 LIMAs imaged required an intervention.