Page 73 - A Practical Guide to Equine Radiography

54 A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY

Proximo 45º lateral-distomedial oblique The X-ray machine is positioned on the
VetBooks.ir (Pr45L-DiMO) and proximo 45º medial- lateral side of the joint while the plate is

on the medial side.
distolateral oblique (Pr45M-DiLO)
(Figs 6.25–6.28) − Pr45M-DiLO: the lateral proximal sesa-
1. Stand the horse square with the cannon moid bone is projected proximally.
bone vertical to the ground in each direc- The X-ray machine is positioned on the
tion, and ensure all limbs are equally medial side of the joint while the plate is
weight-bearing. For the Pr45M-DiLO, the on the lateral side.
contralateral limb is placed slightly forward
or backward to facilitate X-ray tube posi- 3. Focus–film distance: 100 cm.
tioning and avoid superimposition. 4. Angle the X-ray beam 45 degrees downward
2. Place the plate resting on the ground in por- from the horizontal.
trait orientation, as close as possible to the 5. Centre the X-ray beam at the level of the
limb. proximal aspect of the proximal sesamoid
bone closer to the tube.
− Pr45L-DiMO: the medial proximal ses- 6. Collimate around the fetlock joint.
amoid bone is projected proximally. 7. Exposure guide: 65 kVp, 8 mAs.

Figure 6.25 Positioning to obtain an Pr45L-DiMO view of the fetlock.

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