As an interventional radiology physician assistant, your job is to help provide medical care to a patient undergoing an IR procedure or treatment. These treatments typically involve using real-time imaging systems like ultrasounds or MRIs to help deliver targeted care. This makes this role especially time-sensitive, even within the realm of medical and surgical procedures. As a result, the ability to work quickly and accurately is especially important in an industry that already requires these traits. Interventional radiology physician assistants usually work regular hours. However, employers may occasionally ask you to work nights, weekends, or holidays when necessary to provide emergency care.