Intravascular lithotripsy generally scores well for removal of calcification, but the U.K. National Institute for Health and Care Excellence (NICE) is offering only limited endorsement of this procedure for peripheral artery disease (PAD). NICE said one of the problems with the evidence is that this procedure is often conducted in conjunction with other procedures, and thus the agency will have to see more definitive evidence before an unequivocal endorsement is justified.