Physics and imaging technology: CT

Knowledge of the physics and imaging technology involved in the production of CT scans is vitally important for medical imaging specialists.

See also

• physics and imaging technology: x-ray
• physics and imaging technology: ultrasound
• physics and imaging technology: CT
• physics and imaging technology: MRI
• physics and imaging technology: nuclear medicine

Related Radiopaedia articles

Physics and imaging technology: CT

• computed tomography (CT)
  • CT technology
    • generations of CT scanners
      • helical CT scanning
      • ultra-high-resolution CT (UHRCT)
    • CT x-ray tube
    • CT fluoroscopy
    • cone beam CT
  • dual energy CT
    • clinical applications of dual energy CT
      • virtual non-contrast imaging 
      • abdominal
      • vascular 
      • urinary system
      • musculoskeletal
  • CT image reconstruction
    • kernels
    • filtered back projection
    • Hounsfield unit
    • iterative reconstruction
    • maximum intensity projection (MIP)
    • minimum intensity projection (MinIP)
    • metal artifact reduction algorithm
    • windowing
  • CT image quality
    • CT spatial resolution
    • CT contrast discrimination
    • pitch
    • noise in CT
  • CT dose
    • CT dose index (CTDI)
    • dose length product (DLP)
    • size specific dose estimate (SSDE)
    • tube current modulation
  • CT contrast medium
    • iodinated contrast media
      • agents
        • water soluble
          • ionic
            • diatrizoate (Gastrografin)
            • iothalamate (Conray)
            • ioxaglate (Isopaque 370)
            • meglumine iotroxate (Biliscopin)
            • metrizoate
          • non-ionic
            • iodixanol (Visipaque)
            • iohexol (Omnipaque)
            • iopamidol (Isovue)
            • iopromide (Ultravist)
            • ioversol (Optiray)
            • ioxilan (Oxilan)
        • water insoluble
          • ethiodized poppy seed oil (Lipiodol)
          • iophendylate (Pantopaque/Myodil)
      • vicarious contrast material excretion
      • contrast allergy
        • iodide mumps
      • contrast media extravasation
      • contrast-induced nephropathy
      • iodinated contrast-induced thyrotoxicosis
      • contrast media and breastfeeding
    • non-iodinated contrast media
      • barium sulfate
  • coronary CT angiography
  • CT artifacts
    • patient-based artifacts
      • motion artifact
      • transient interruption of contrast
    • physics-based artifacts
      • beam hardening
      • partial volume averaging
      • quantum mottle (noise)
      • photon starvation
      • aliasing in CT
    • hardware-based artifacts
      • ring artifact
      • tube arcing
      • out of field artifact
      • air bubble artifact
      • helical and multichannel artifacts
        • windmill artifact
        • cone beam effect
        • MPR artifact
          • zebra artifact
          • stair-step artifact
  • CT safety
  • history of CT
    • Godfrey N Hounsfield