Tuesday, 15 September 2015

Interpreting chest X-rays

Dear House Officers,
When interpreting chest X-rays please present with the following format:

  1. What kind of X-ray? Indicate the direction of the beam and the part of the body.
  2. Name?
  3. Taken when?
  4.  Number of a series of what number?
  5. Satisfactory inspiration?
    •  Left hemidiaphragm must be below the sixth rib anteriorly.
  6.  Central? Rotated?
    • The medial end of the clavicles should be equidistant to the spinous processes of T1 to T5.
  7. Exposure good?
    • Just make out the vertebra behind the heart.
  8. Position of scapula good?
  9. Cardiothoracic ratio of < 50%?
  10. Outlines clearly defined and seen?
    • Diaphragm
    •  Heart.
    • Hila
      •  Left higher than right
      • Same density
    • Bones
  11.  Hidden conundrums
    • Apex
    •  Behind the heart
    •  Hila
    • Below the diaphragm


Example

This is a posterior-anterior (PA) chest X-ray of Mr. Smith taken on the 13th of September 2015. This is the 3rd chest X-ray of a series of 3. The assessment of its quality showed that inspiration was satisfactory, the X-ray was central, exposure adequate and scapula is well positioned. The cardiothoracic ratio is less than 50%. The outlines of the diaphragm, heart and bones are clearly seen and well defined with the left hilum being higher than the right and of equal density.


Mnemonic: (N)ame, (D)ate, (I)nspiration, (R)otation, (E)xposure, (S)capula, (C)ardiothoracic ratio, (O)thers/outlines; NDIRESCO

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