Page 139 - A Practical Guide to Equine Radiography

120 A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY

Caudocranial (CdCr) (Figs 12.5–12.8) 4. Position the X-ray machine caudal to the
VetBooks.ir 1. Stand the horse square with the cannon 5. Focus–film distance: 100 cm.
stifle.
bone vertical to the ground in each direc-
tion and ensure that all limbs are equally 6. Angle the X-ray beam downward along the
weight-bearing. The limb to be examined tibial plateau, approximately 10–20 degrees
should be positioned caudal to the contra- to the horizontal. It may be helpful to pal-
lateral limb and be fully weight-bearing; pate the tibial plateau and mark it with
this may facilitate plate positioning. some tape.
2. Place the plate in portrait orientation cra- 7. Centre the X-ray beam at the level of the
nial to the stifle as close as possible to the tibial plateau.
limb. 8. Collimate tightly around the stifle to reduce
3. Place a R/L marker on the lateral side of the scatter.
plate. 9. Exposure guide: 90 kVp, 30 mAs.

Figure 12.5 Positioning to obtain a CdCr view of the stifle.

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