II. Definition

  1. Radiopaque (or radio-opaque)
    1. Visible objects on XRay
  2. Radiolucent
    1. Objects not visible on XRay

III. Imaging: Toxins radiopaque on XRay (Mnemonic=COINS)

  1. Chloral Hydrate, Cocaine packets
  2. Opiate Packets
  3. Iron and Heavy metals (e.g. Lead, Mercury, Arsenic)
  4. Neuroleptic agents
  5. Sustained release products, enteric coated preparations

IV. Imaging: Foreign Body

  1. Radiopaque foreign bodies
    1. Dentures
    2. Some bones (e.g. fish spines)
    3. Metal or aluminum (coins, batteries)
    4. Glass
    5. Pencil graphite
    6. Teeth
    7. Gravel or stone
  2. Intermediate lucency
    1. Plastic
    2. Wood
  3. Radiolucent foreign bodies
    1. Fish bones
    2. Chicken bones
    3. Food bolus
    4. Toothpick

V. Imaging: Nephrolithiasis

  1. Radiodense (radiopaque) stones
    1. Calcium Oxalate Stones
    2. Struvite Stones
  2. Intermediate stone lucency
    1. Cystine Stones
  3. Radiolucent stones (not visible on XRay)
    1. Uric Acid stones

Images: Related links to external sites (from Bing)

Related Studies (from Trip Database) Open in New Window