IPEM 77 Recommendations

• Daily

  • image noise
  • CT number accuracy (water only)

• Annually

  • CT number accuracy (more values)
  • CT number uniformity
  • CTDI in air
  • irradiated slice thickness (dose profile)
  • high contrast spatial resolution
  • imaged slice thickness
  • light and scan plane alignment accuracy
  • table top incrementation,
  • couch travel accuracy (spiral scan)

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