Type:
Educational Exhibit
Keywords:
Head and neck, Oncology, CNS, MR, CT-High Resolution, Diagnostic procedure, Image verification
Authors:
I. N. Santa; Tirgu -Mures/RO
DOI:
10.1594/ecr2018/C-1554
Background
Diffusion weighted imaging is a form of MR imaging based of the variability of random Browian motion of water molecules within a voxel of tissue.
Water molecules are in constant motion,
and the rate of movement or diffusion depends on the kinetic energy,
that reflects changes at a cellular level and provides unique insight about tumor cellularity and the integrity of cell membranes.
A cholesteatoma is an abnormal,
noncanceruos skin growth composed of keratinizing squamous epithelium in the middle ear.
Cholesteatomas of the temporal bone and middle ear can be divided into:acquired cholesteatomas generally occur in the middle ear and mastoid,
whereas congenital cholesteatomas or epidermoids can occur in other locations.
The cholesteatomas can increased in size and destroy important structures within the temporal bone.
This may affect hearing,
balance,
and the function of facial muscles.