Page 85 - A Practical Guide to Equine Radiography

66 A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY

Dorso 45º lateral-palmaromedial machine is positioned on the dorsome-
VetBooks.ir oblique (D45L-PaMO) and dorso 45º dial side of the leg, at a 45-degree angle

from the sagittal plane of the limb. The
medial-palmarolateral oblique
(D45M-PaLO) (Figs 7.9–7.12) plate is perpendicular to the X-ray beam
1. Stand the horse square with the cannon on the palmarolateral side of the leg.
bone vertical to the ground in each direc-
tion and ensure that all limbs are equally 3. Focus–film distance: 100 cm.
weight-bearing. 4. Use a horizontal X-ray beam.
2. Place the plate in portrait orientation with 5. Centre the X-ray beam at the level of the
a R/L marker on the lateral side. metacarpus/metatarsus, midway between
the fetlock and the carpus/tarsus.
− D45L-PaMO: highlights the fourth 6. Collimate around the area of interest.
metacarpal/metatarsal bone. The X-ray 7. Exposure guide: 60 kVp, 8 mAs.
machine is positioned on the dorsolat- Note: the D45M-PaLO can also be obtained
eral side of the leg, at a 45-degree angle as a Pa45L-DMO. The X-ray machine is posi-
from the sagittal plane of the limb. The tioned on the palmarolateral side of the leg,
plate is perpendicular to the X-ray beam at a 45-degree angle from the sagittal plane
on the palmaromedial side of the leg. of the limb. The plate is perpendicular to
− D45M-PaLO: highlights the second the X-ray beam on the dorsomedial side
metacarpal/metatarsal bone. The X-ray of the leg.

A C

B

Figure 7.9 Diagram showing how to obtain D45L-PaMO (A) and D45M-PaLO (B) views of the metacarpus and
positioning to obtain a D45L-PaMO view of the metacarpus (C).

Equine Radiography.indb 66 27/11/2018 11:07