MEDRADSC 2Y03 Lecture Notes - Lecture 18: Fluoroscopy, Image Intensifier, Video Camera Tube
28 Jul 2019
School
Department
Course
Professor
Document Summary
Allows dynamic/real time radiographic viewing of various body structures/systems (0. 5 ma - 5ma) Continuous (or near continuous) x-ray beam (beam on ) Observe physiology (ie peristalsis, arterial flow, swallowing action, venous flow) Viewed by tv monitor & able to record images or entire studies. Can only see parts that have be enhanced by contrast. Does so at a fraction of the exposure rate of still imaging (5 ma vs hundreds of ma) Dose still higher than traditional radiography - exposure time in minutes instead of seconds or milliseconds. Pulse - reduced dose but maintains temporal component. Ba studies are decreasing in major centres & there is less emphasis although still covered in the national competency. Intramedullary nailing, hip pinnings, closed reductions, & pacemaker insertions. Many newer fluoroscopy suites incorporate fpd detectors. Traditional - image intensifier system (used more than fpd) Transforms the x-ray photons emerging from the patient into a small, bright light image.
