Page 162 - A Practical Guide to Equine Radiography

Head 143

Dorsoventral (DV) (Figs 14.10–14.15) − Rostral head: in the midline of the head
VetBooks.ir 1. Position the head with the nose extended at the level of the corner of the mouth

(Fig. 14.10).
rostrally. Care must be taken to avoid any
rotation/tilting of the head. A head stand − Paranasal sinuses: in the midline of the
may facilitate the positioning when evaluat- head at the level of the rostral third of the
ing the paranasal sinuses. facial crest (Fig. 14.11).
2. Place the plate ventral to the head, along
the mandible. 8. Collimate around the head.
3. Indicate right/left with a marker. 9. Exposure guide:
4. Position the X-ray machine dorsal to the head.
5. Focus–film distance: 100 cm. − Rostral head: 60 kVp, 25 mAs
6. Orientate the X-ray beam perpendicular to − Paranasal sinuses: 75 kVp, 30 mAs.
the plate.
7. Centre the X-ray beam in the midline of
the head. Centring depends on the area of
interest:

Figure 14.10 Positioning to obtain a dV view of the rostral Figure 14.11 Positioning to obtain a
aspect of the head. dV view of the head at the level of the
paranasal sinuses.

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