Abstract
Logetron decreases the contrast of x-ray photo and increases the contrast of the fine region (for example, pneumatization of mastoid, mammary gland, etc.) so that it becomes easier to read and diagnose the x-ray photo.
In our department, peanuts, resin part of false teeth and plastic pencil cup of non radioopaque foreign bodies in trachea, bronchus and esophagus in animal were x-rayed and these x-ray films were copied by using Logetron.
These conditions on routine radiographic examinations are surely difficult to be identified however, we could demonstrate those foreign bodies clearly in Logetronogram.
