Page 49 - A Practical Guide to Equine Radiography
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30  A PRACTICAL GUIDE TO EQUINE RADIOGRAPHY



                   Dorso 45º lateral-palmaromedial                       somedial side of the foot, at a 45-degree
      VetBooks.ir  oblique (D45L-PaMO) and dorso 45º                     angle from the sagittal plane of the limb.

                                                                         The  plate  is  perpendicular  to  the  X-ray
                   medial-palmarolateral oblique  
                   (D45M-PaLO) (Figs 4.25–4.28)                          beam on the palmarolateral side of the leg.
                    1. Remove shoes.
                    2. Remove dirt and any loose horn from the        Alternatively, a 60-degree angle from the
                       sole.                                          sagittal plane of the limb can be used when
                    3. Pack the foot with Play-Doh.                   evaluation of the articular margins and exten-
                    4. Place the foot with gloved hands on a          sor process of the distal phalanx is required.
                       Hickman block that is positioned slightly    6. Focus–film distance: 100 cm.
                       forward relative to the horse. The fetlock   7. Use a horizontal X-ray beam.
                       must be kept as much extended as possible.   8. Centre the X-ray beam at the coronary
                    5. Place the plate in portrait orientation with   band on the lateral or the medial hoof wall
                       a R/L marker on its lateral side.              for the D45L-PaMO or the D45M-PaLO,
                                                                      respectively.
                          − D45L-PaMO: highlights the lateral palmar   9. Collimate around the foot.
                         process of the distal phalanx. The X-ray   10. Exposure guide: 70 kVp, 8 mAs.
                         machine is positioned on the dorsolateral
                         side of the foot, at a 45-degree angle from      Note: Alternatively, a Pr45L-DiMO and a
                         the sagittal plane of the limb. The plate is   Pr45M-DiLO can be obtained to image the lat-
                         perpendicular to the X-ray beam on the       eral and medial palmar processes, respectively.
                         palmaromedial side of the leg.               The horse stands on a tunnel block, the X-ray
                          − D45M-PaLO: highlights the medial pal-     machine is placed on the lateral or lateral side
                         mar process of the distal phalanx. The       of the limb and the X-ray beam is angled 45
                         X-ray machine is positioned on the dor-      degrees downward from the horizontal.



                   A                                   C















                   B















                   Figure 4.25  Diagram showing how to obtain D45L-PaMO (A) and D45M-PaLO (B) views of the foot and posi-
                   tioning to obtain a D45L-PaMO view of the foot (C).









       Equine Radiography.indb   30                                                                              27/11/2018   11:05
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