Page 57 - A Practical Guide to Equine Radiography

38 A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY

Dorso 45º lateral-palmaromedial sagittal plane of the limb. The plate is
VetBooks.ir oblique (D45L-PaMO) and dorso 45º perpendicular to the X-ray beam on the

palmaromedial side of the leg.
medial-palmarolateral oblique
(D45M-PaLO) (Figs 5.9–5.12) − D45M-PaLO: the X-ray machine is posi-
1. Stand the horse square with the cannon tioned on the dorsomedial side of the
bone vertical to the ground in each direc- joint, at a 45-degree angle from the
tion, and ensure all limbs are equally sagittal plane of the limb. The plate is
weight-bearing. perpendicular to the X-ray beam on the
2. Position both feet on flat blocks with the palmarolateral side of the leg.
heels at the caudal edge of the block.
3. Place the plate resting on the ground in por- 4. Focus–film distance: 100 cm.
trait orientation with a R/L marker on its 5. Use a horizontal X-ray beam.
lateral side. 6. Centre the X-ray beam at the level of the
proximal interphalangeal joint, midway
− D45L-PaMO: the X-ray machine is posi- between the coronary band and the fetlock.
tioned on the dorsolateral side of the 7. Collimate around the pastern region.
joint, at a 45-degree angle from the 8. Exposure guide: 65 kVp, 8 mAs.

A C

B

Figure 5.9 Diagram showing how to obtain D45L-PaMO (A) and D45M-PaLO (B) views of the pastern and
positioning to obtain a D45L-PaMO view of the pastern (C).

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