Page 153 - A Practical Guide to Equine Radiography

134 A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY

Right 30º dorsal-left ventral oblique 3. Indicate right/left (plate’s side) with a marker.
VetBooks.ir (R30D-LVO) and Left 30º dorsal-right 4. Focus–film distance: 120 cm. Adjust the

focus–film distance to the distance speci-
ventral oblique (L30D-RVO) for the
coxofemoral joint (Figs 13.9–13.12) fied for the grid.
1. Stand the horse square with all limbs 5. Angle the X-ray beam downward 30 degrees
equally weight-bearing. to the horizontal.
2. Place the plate vertically in landscape orien- 6. Centre the X-ray beam between the greater
tation on the side of the leg of interest and trochanter on the affected side and the base
position the X-ray machine on the contra- of the tail; an alternative method would be
lateral side above the pelvis. to centre on a spot that corresponds to two
thirds of the distance between the tuber
− R30D-LVO: highlights the left coxofemo- sacrale and tuber ischii on the side of the
ral joint. X-ray machine.
− L30D-RVO: highlights the right coxofem- 7. Collimate around the area of interest.
oral joint. 8. Exposure guide: 110 kVp, 140 mAs.

A B

C

Figure 13.9 Diagram showing how to obtain the R30D-LVO view for the left coxofemoral joint (A) and position-
ing to obtain the same view (B and C).

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