1.  Definition of M.R.I.
 
2.  Projection Rules
 
3.  Topographic areas
 
4.  Topographic Charts
 
5.  Signs
 
6.  The heart
 
7.  Bronchi
 
8.  Dorsal vertebrae in the backbone
 


7. Bronchi
The topographic area for bronchial disorders is situated between 80º and 115º and centred on corona nº 4.

The most representative signs are:
- Alteration in the collar, the collar is thicker and takes on a whitish colour.
- Channel parallel to the collar on the outer part, it is similar to the tone or colour alteration sign.
- Cloudiness in the stroma, in the majority of cases, an area with a whitish tone is projected parallel to the collar.
The signs mentioned are very similar.



It is also projected by:
- One or more marks, variable in size, not clear.
- Small lacunae, these may be similar to spots.
A Spoke sign is not representative of bronchial disorders although it may appear in some cases.
Some bronchial disorders are projected by ambiguous and faint signs which may be difficult to see.