Page 65 - A Practical Guide to Equine Radiography

46 A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY

Dorso 45º lateral-palmaromedial − D45M-PaLO: highlights the medial prox-
VetBooks.ir oblique (D45L-PaMO) and dorso 45º imal sesamoid bone. The X-ray machine

is positioned on the dorsomedial side of
medial-palmarolateral oblique
(D45M-PaLO) (Figs 6.9–6.12) the joint, at a 45-degree angle from the
1. Stand the horse square with the cannon sagittal plane of the limb. The plate is
bone vertical to the ground in each direc- perpendicular to the X-ray beam on the
tion, and ensure all limbs are equally palmarolateral side of the leg.
weight-bearing.
2. Place the plate resting on the ground in por- 3. Focus–film distance: 100 cm.
trait orientation with a R/L marker on its 4. Use a horizontal X-ray beam, although this
lateral side. projection can also be obtained by angling
the X-ray beam down approximately 10–15

− D45L-PaMO: highlights the lateral proxi- degrees from the horizontal.
mal sesamoid bone. The X-ray machine 5. Centre the X-ray beam at the level of the
is positioned on the dorsolateral side of fetlock joint.
the joint, at a 45-degree angle from the 6. Collimate around the fetlock joint.
sagittal plane of the limb. The plate is 7. Exposure guide: 65 kVp, 8 mAs.
perpendicular to the X-ray beam on the
palmaromedial side of the leg.

A C

B

Figure 6.9 Diagram showing how to obtain D45L-PaMO (A) and D45M-PaLO (B) views of the fetlock and
positioning to obtain a D45L-PaMO view of the fetlock (C).

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