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L12 MRI CT Ultrasound - Coggle Diagram

- - - - ocular biometry
        
        anatomical dimensions
        
        IOL, keratoprosthesis calc
        
        alt to optical biometry
        
        spikes -> surface
      - amplitude, 1D depth
      - measurement
    - - brightness, 2D cross section
      - multiple A scans via moving transducer
      - diagnostic
  - - - ocular trauma
      - globe abnormalities
    - - intraoc tumour type
      - vitreous, retinal, choroidal detachments
      - causes of ON swelling
  - - - contact globe/cornea
      - anaesthetic, no gel
    - - contact close eyelid
      - gel, no anaesthetics
- - - - absolute: metallic FB, implants
      - relative: claustrophobia, weight/size