Page 24 - A Practical Guide to Equine Radiography
P. 24

VetBooks.ir                                                             CHAPTER 2






                  X-ray equipment and radiation


                  safety in equine practice















                  The equipment needed for equine radiography     and are commonly used in equine ambulatory
                  includes:                                       practice. Mobile machines are on wheels and
                                                                  can be moved around within a hospital set-
                  •  X-ray generator                              ting. These are often used if no dedicated X-ray
                  •  registration plates or cassettes to register the   room is available and X-ray procedures are
                     image                                        performed in rooms where other procedures
                  •  stands and holders for equipment: plate      also take place, for example operating theatres.
                     holders, generator stands                    Stationary units are usually ceiling-mounted
                  •  positioning aids for horses: blocks,  head   units in dedicated X-ray suites.
                     stand                                          X-ray generators are categorized based
                  •  anti-scatter grids                           on their output into ‘high-output’ and ‘low-
                  •  protective equipment:                        output’ generators. Stationary machines are
                                                                  usually high-output generators while portable
                        − gowns, thyroid protectors, gloves       machines are limited in their output and mobile
                        − screens                                 machines are somewhere between the two. The
                        − monitoring badges                       output capacity of a machine can be found in
                                                                  the technical specification of the equipment
                  •  viewing station                              and usually also on a sticker on the side of
                  •  visual warning aids such as signs or tape if   the generator. Both the maximum kVp and the
                     necessary to prevent people walking in on    maximum mA should be listed. It is well worth
                     the procedure                                being familiar with these values since it will let
                  •  competent horse handler                      the user decide which radiographs are within
                  •  Sedation!                                    the capability of the system.




                  X-ray generators                                Registration systems: computed
                  X-ray generators can be divided into portable,   versus digital radiography
                  mobile and stationary machines. Portable        Recent advancements in diagnostic imaging
                  machines are small and lightweight units that   have seen the replacement of conventional
                  can easily be fitted in a car and carried by hand   film-screen systems with computed radiography











       Equine Radiography.indb   5                                                                               27/11/2018   11:03
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