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
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
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)
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