MEDRADSC 3C03 Lecture Notes - Lecture 2: Intravenous Pyelogram, Angiography, Venography

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 3C03
• Professor: Meaghan Jefferson

Document Summary

Modalities used in ir: fluoroscopy, ct, mri, ultrasound. Advantages: live imaging (for short periods of time, no bone or air artifacts, able to perform multitude of procedure types (vascular and non-vascular, able to see detailed structures with use of contrast agents. Imaging in 2 planes (rotational or sterotactic- two x-ray sources at once) Disadvantages: radiation risk for patient and ir staff, difficulty distinguishing soft tissues without use of contrast, chronic radiation dermatitis. Arteriography: exam of arteries with the injection of a radiopaque contrast media, rotational c-arm used for imaging in 2 planes. Venography: evaluation of the veins with contrast media, used to rule out thrombus formation or incompetence in the venous system, more likely to use ultrasound for ctv now, still used for pelvic vessels, and reflux in deep veins. Ct guided procedures and ct angiography: ct combines the use of x-rays with computerized analysis/reconstruction of the images.