A myocardial revascularization device comprises a tissue-ablating laser optical fiber and a reflectance fiber within a catheter and coupled, respectively, to a laser-energy source and an optical reflectance system. In one embodiment, acquired images are registered and whole-image defects are automatically detected based on a figure of merit generated by the registration process. The device includes a flexible strap member having a plurality of headed pins at a top end and a plurality of mating holes in a bottom end thereof.