Interventional techniques are medical procedures that involve minimally invasive methods to diagnose or treat various health conditions. These techniques often use imaging guidance, such as ultrasound or CT scans, to help doctors accurately target specific areas of the body. Common examples include angioplasty, where a balloon is used to open narrowed blood vessels, and biopsy, which involves taking a small tissue sample for analysis. These procedures are designed to reduce recovery time and minimize complications compared to traditional surgery. Interventional techniques can be applied in various fields, including cardiology, oncology, and orthopedics, making them valuable tools in modern medicine.