Physicians who perform Interventional Radiology or “IR” are expert at treating disease with minimally invasive procedures. Many conditions that required surgery in the past can now be performed with IR. The imaging modalities in IR include fluoroscopy, computed tomography, ultrasound and magnetic resonance imaging; of these only fluoroscopy and computed tomography use ionizing radiation. Protocol specific radiation dose for IR procedures are often difficult to determine because of the heterogeneous nature of the procedures, the individual characteristics of the patient and the type of equipment being utilized. However, radiation dose is typically tracked during these procedures and in fluoroscopy the “peak skin dose” or surrogate measures of peak skin dose such as time and dose are used to prevent deterministic injuries.IR skin dose

For more information on radiation dose and IR, the Society of Interventional Radiologists has published information available on their website. The figure below is a fluoroscopic peak skin dose map. The radiation dose from IR is measured in grays versus millgrays used in CT.