Diagnostic radiology refers to the medicine field in which a patient is diagnosed using non-invasive imaging scans. Sometimes the tests and equipment used involve low radiation doses to create highly detailed pictures of an area.
Interventional radiology uses imaging technology to help guide medical procedures, such as CT scans, MRI, and ultrasounds. This technology eliminates the need for surgery and scope for diagnosing and treating certain conditions. Instead, during the procedure or under very mild sedation, patients are often awake.