Page 47 - A Practical Guide to Equine Radiography

28 A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY

Palmaroproximal-palmarodistal oblique 7. Position the X-ray machine under the abdo-
VetBooks.ir (PaPr-PaDiO) or ‘skyline’ view of the men of the horse. A 100 cm focus–film

distance is usually not possible since the
navicular bone (Figs 4.21–4.24)
1. Remove shoes. X-ray machine cannot be positioned high
2. Remove dirt and any loose horn from the enough.
sole. 8. Angle the X-ray beam downward hitting the
3. Pack the foot with Play-Doh. foot at 45 degrees from the horizontal. A
4. Position the foot being imaged on a tunnel low-heel foot conformation may require a
block as far back underneath the horse as slightly more horizontal X-ray beam angle.
possible while still keeping the foot weight- 9. Centre the X-ray beam just proximal to the
bearing. It is also helpful in some horses to bulbs of the heel, without superimposing the
position the foot slightly turned outward. palmar aspect of the fetlock on the image.
5. Place the plate facing upwards in the tunnel 10. Collimate tightly around the navicular
block. bone to reduce scatter.
6. Place a R/L marker on the lateral side of the 11. Exposure guide: 75 kVp, 8 mAs.
plate.

Figure 4.21 Positioning to obtain a PaPr-PaDiO view of the foot.

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