SEM 1 : Medical Imaging

?

1. magnetic resonance imaging uses:

  • ionising radiation between 55-150kup
  • ionising radiation upto 150kup
  • magnetic and sound waves
  • ionising radiation as gamma rays
  • X-rays upto 150kup
  • non-ionising radiation (high frequency sound waves)
1 of 20

Other questions in this quiz

2. what is shown in CT

  • multiplanar images with good soft tissue display
  • cross sectional images of bone and soft tissue
  • coronal image of soft tissue - can have colour overlay
  • function and physiology of tissues
  • bones and joints and some soft tissue
  • real time moving images of bony structures and contrast soft tissue

3. what is meant by X-ray attenuation

  • the range of absorbtion levels of materials as x rays travel through
  • the differences of energy incidence on receptors caused by a homogenous X-ray on a patient
  • the range of energy levels of x rays allowing them to demonstrate a range of densities

4. what is meant by the Compton scatter

  • when an incidence photon is absorbed by a k shell electron, which forms a Compton electron and is displaced and replaced by an L-shell electron which produces K-alpha emission.
  • when an incidence photon is partially absorbed and partially deflected by a k shell electron, which causes it to be displaced and form a Compton electron
  • when an incidence photon is absorbed by a k shell electron, which forms a photoelectron and is displaced and replaced by an L-shell electron which produces Compton emission.
  • when an incidence photon is partially absorbed and partially deflected by a L shell electron, which causes it to be displaced and form a Compton electron
  • when an incidence photon is partially absorbed and partially deflected by a outer shell electron, which causes it to be displaced and form a Compton electron
  • when an incidence photon is absorbed by a L shell electron, which forms a Compton electron and is displaced and replaced by an K-shell electron which produces L-alpha emission.

5. what are the dangers of plain film radiography

  • walking into room with electronics can be dangerous
  • radiation - protection needed
  • iodine contrast can cause allergic reaction (anaphylaxis) and has interactions with some drugs

Comments

No comments have yet been made

Similar Medicine resources:

See all Medicine resources »See all Anatomy resources »