Page 129 - A Practical Guide to Equine Radiography

110 A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY

Dorso 45º medial-plantarolateral − Pl45L-DMO: the X-ray machine is posi-
VetBooks.ir oblique (D45M-PlLO) or plantaro 45º tioned on the plantarolateral side of

the joint, at a 45-degree angle from the
lateral-dorsomedial oblique
(Pl45L-DMO) (Figs 11.13–11.16) sagittal plane of the limb. The plate is
1. Stand the horse square with the cannon perpendicular to the X-ray beam on the
bone vertical to the ground in each direc- dorsomedial side of the leg.
tion, and ensure all limbs are equally
weight-bearing. 3. Focus–film distance: 100 cm.
2. Place the plate in portrait orientation with 4. Use a horizontal X-ray beam.
a R/L marker on its lateral side. 5. Centre the X-ray beam at the level of the dis-
tal intertarsal joint (about 10 cm below the
− D45M-PlLO: the X-ray machine is posi- point of the hock or 2 cm above the head
tioned on the dorsomedial side of the of the fourth metatarsal bone).
joint, at a 45-degree angle from the 6. Collimate around the tarsus.
sagittal plane of the limb. The plate is 7. Exposure guide: 70 kVp, 10 mAs.
perpendicular to the X-ray beam on the
plantarolateral side of the leg.

A B

C D

Figure 11.13 Diagram and positioning of D45M-PlLO (A and B) and Pl45L-DMO (C and D) views of the tarsus.

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