Page 173 - A Practical Guide to Equine Radiography

154 A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY

Right 45º ventral-left dorsal oblique 3. Indicate right/left (plate’s side) with a
VetBooks.ir (R45V-LDO) and Left 45º ventral-right 4. Position the X-ray machine on the other
marker.
dorsal oblique (L45V-RDO)
for mandibular cheek teeth side of the head.
(Figs 14.28–14.30) 5. Focus–film distance: 100 cm.
1. Position the head straight (avoid tilting or 6. Angle the X-ray beam, so that the X-ray
rotation) with the nose vertical with the beam hits the dorsal plane (hard palate) at
help of a head stand. Alternatively, the head a 45-degree upward angle.
can be stretched out so that the nose is hori- 7. Centre the X-ray beam in the middle of the
zontal. Both ways standardize head position body of the affected mandible.
and help to angle the beam correctly. 8. Align the field of view with the long axis
2. Place the plate on the affected side in a ver- of the mandible and collimate around the
tical position and aligned with the area of area of interest.
interest. 9. Exposure guide: 80 kVp, 20 mAs.

– R45V-LDO: outlines the left-sided man-
dibular cheek teeth.
– L45V-RDO: outlines the right-sided man-
dibular cheek teeth.

A B

Figure 14.28 Diagram (A) and positioning (B) to obtain an R45V-LDO view of the head that outlines the left-
sided mandibular cheek teeth.

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