Imaging physics

Imaging physics is home to the articles exploring the physics of diagnostic and therapeutic procedures within radiology.

Rather than focus on the practical aspect of imaging as seen in imaging in practice, or the technical aspect of the equipment and technology used as seen in imaging technology, imaging physics explores the physics behind the technology.

Related Radiopaedia articles

Imaging physics

• imaging physics
• imaging in practice
• imaging technology
• x-ray physics
  • ionizing radiation
  • interaction with matter​
    • Compton effect
    • photoelectric effect
    • pair production
    • coherent scattering
  • x-ray spectrum
    • bremsstrahlung
    • characteristic x-ray
  • radiation units
    • absorbed dose
      • gray
    • equivalent dose
      • sievert
  • effective dose
    • tissue weighting factor
  • exposure​
    • entrance skin dose
    • coulomb per kilogram
  • legacy units
    • curie
    • rad
    • rem
    • roentgen
    • rutherford
  • radiation safety
    • as low as reasonably achievable (ALARA)
    • radiation protection
    • background radiation
    • background radiation equivalent time
    • deterministic effect
    • dose limits
    • diagnostic reference level
    • inverse square law
    • lead apron
  • radiation damage (biomolecular)
  • radiation damage (skin injury)
  • stochastic effect
    • radiation-induced carcinogenesis
      • radiation-induced lung cancer
• CT physics 
• MRI physics
  • B0
  • chemical shift
  • dependence of magnetization (proton density, field strength and temperature)
  • echo time
  • eddy currents
  • electromagnetic induction
  • Ernst angle
  • flip angle
  • Larmor frequency
  • magnetic dipole magnetic field gradient
    • magnetic dipole moment
    • effect of gradient strength and bandwidth on slice thickness
  • magnetic susceptibility
  • magnetism​
    • diamagnetism
    • ferromagnetism
    • longitudinal and transverse magnetization
    • nuclear magnetization
    • paramagnetism
    • superparamagnetism
  • molecular tumbling rate effects on T1 and T2
  • net magnetization vector (NMV)
    • energy difference between spin up and spin down states
  • relaxation
    • T1 relaxation
      • T1 values (1.5 T)
      • factors affecting T1
    • T2 relaxation
    • T2* relaxation
  • repetition time
  • resonance and radiofrequency (RF)
  • units of magnetism
    • SI units
      • henry
      • tesla
      • weber
    • legacy units
      • gauss
      • maxwell
• ultrasound physics
  • absorption
  • acoustic impedance
  • attenuation
  • beam focusing
  • beam steering
  • decibel
  • Doppler effect
  • dynamic range
  • focal zone
  • frame rate
  • gain
  • line density
  • piezoelectric effect
  • power output
  • reflection
  • refraction
  • scattering
  • time gain compensation
  • ultrasound frequencies
• nuclear medicine physics 
  • atomic structure
  • isotopes
  • radioactive decay
    • alpha decay
    • beta decay
    • electron capture
    • gamma decay
    • half life
    • activity