What does the suffix '-plasty' refer to in medical terms?

The suffix '-plasty' is commonly used in medical terminology to indicate surgical repair or reconstruction of a specific body part. This term originates from the Greek word "plastos," which means molded or formed. In practice, various medical procedures incorporate '-plasty' to specify the type of surgery being performed. For example, "rhinoplasty" refers to the surgical repair or change of the nose, while "angioplasty" involves the repair or reconstruction of blood vessels. The other options do not accurately capture the meaning of '-plasty,' as they refer to different medical concepts such as imaging processes, medical conditions, or systems of organs, none of which pertain specifically to surgical repair.