The size of the middle ear and the mastoid air cell

Acta Otolaryngol. Jan-Feb 1978;85(1-2):24-32. doi: 10.3109/00016487809121419.


The total volume for the middle ear and mastoid air cells was measured in 55 temporal bones with normal ear drums from a Norwegian post-mortem material. The measurements were made by an acoustic method and checked by means of fluid filling induced by vacuum pumping. As a measuring fluid X-ray contrast medium was employed so that the degree of filling could be examined by X-ray. The volume varied between approximately 2--22 cm3 with an average round 6,5 cm3.

MeSH terms

  • Aged
  • Air
  • Ear, Middle / cytology*
  • Ear, Middle / diagnostic imaging
  • Female
  • Humans
  • Intubation
  • Male
  • Manometry
  • Mastoid / cytology*
  • Methods
  • Pressure
  • Radiography
  • Temporal Bone / cytology
  • Vacuum