Page 162 - A Practical Guide to Equine Radiography
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Head  143



                  Dorsoventral (DV) (Figs 14.10–14.15)                   − Rostral head: in the midline of the head
      VetBooks.ir  1.  Position the head with the nose extended         at the level of the corner of the mouth

                                                                        (Fig. 14.10).
                      rostrally. Care must be taken to avoid any
                      rotation/tilting of the head. A head stand         − Paranasal sinuses: in the midline of the
                      may facilitate the positioning when evaluat-      head at the level of the rostral third of the
                      ing the paranasal sinuses.                        facial crest (Fig. 14.11).
                  2.  Place the plate ventral to the head, along
                      the mandible.                                8. Collimate around the head.
                  3.  Indicate right/left with a marker.           9. Exposure guide:
                  4.  Position the X-ray machine dorsal to the head.
                  5.  Focus–film distance: 100 cm.                       − Rostral head: 60 kVp, 25 mAs
                  6.  Orientate the X-ray beam perpendicular to          − Paranasal sinuses: 75 kVp, 30 mAs.
                      the plate.
                  7.  Centre the X-ray beam in the midline of
                      the head. Centring depends on the area of
                      interest:












































                  Figure 14.10  Positioning to obtain a dV view of the rostral   Figure 14.11  Positioning to obtain a 
                  aspect of the head.                                      dV view of the head at the level of the 
                                                                           paranasal sinuses.


















       Equine Radiography-01-cnewlayout.indd   143                                                               27/11/2018   11:37
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