Apparatus - Chapter 36 Fluoroscopy

80 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
Two basic standout facts about fluoroscopy
  • Dynamic range (not a static image)
  • Positive images (bone is black)
Fluoroscopy used __________ to evaluate both anatomy and function of organs/vessels
Contrast media
What is fluoro used in the OR for?
  • Placement of ortho appliances
  • insertion of pacemakers
  • angiography
Fluoro used in departments for
  • arthograms
  • myelograms
  • biopsies
  • GI tract imaging (with barium)
Two types of fluoro units
  • Stationary
  • C-arm (OR)
Who invented fluoro?
  • Wilhem C Roengton (Edison gets credit)
What is the setup of conventional fluoro?
  • x-ray source
  • Image Intensifier
  • TV camera
  • TV monitor
What is the setup of first generation digital fluoro?
  • x-ray source
  • ii (or flat panel image receptor)
  • CCD
  • ADC
  • computer (to memory)
  • DAC
  • viewing console
List all the components of a fluoroscope
  • x-ray generator, tube, collimator, filters
  • patient table, grid
  • image intensifier & optical coupling decive
  • television system
  • image recording system
Where should the radiographer stand to reduce personnal dose?
At the IR end (scatter goes into patient and back towards x-ray tube/source) (Best for standing radiographers to have IR on top - near face)
How many "movements" does the c-arm have?
4
  1. backwards/forwards
  2. side to side
  3. c-arm round forward/down
  4. c-arm round side to side
What are the three types of radiation?
  1. Leakage
  2. Scatter
  3. Useful beam
Why is pulsed fluoro good?
It reduces patient and personnel dose
Name 5 ways to reduce dose?
  1. Increase SID
  2. Decrease OID
  3. Collimate
  4. Don't mag (this required increased mA)
  5. Time. Distance. Shielding
Modern fluoro is great for...
  • GI tract
  • Vascular anatomy
  • Surgical operations