CALCULATION OF EFFECTIVENESS OF THE VETERINARY X-RAY SYSTEMS PROTECTIVE CABIN

Abstract

Introduction. The transition from the use of X-ray film to digital radiography (DR) has made X-ray diagnostics in veterinary clinics simple and efficient. The number of examinations is small compared to medical use, but a significant part of them is performed without anesthesia of the animals by manual fixation of the animals. Such fixation of the animals is usually performed by veterinary clinic staff.

Methods. In this work, we measured the dose loads and calculated the protection efficiency of a new cabin for a veterinary X-ray system. Cabins provide protection in space in three coordinates. Accordingly, the calculations of the attenuation coefficients must also be performed in volume.

Results. The experimentally found values of the three-dimensional distribution of the attenuation coefficients on the surface of the cabin make it possible to calculate the necessary thickness of lead protection, which guarantee compliance with the relevant sanitary standards. In the experiment, a decrease in the protection factor of the screen with a lead equivalent of 0.6 mm was registered up to 2 times, which corresponds to an increase in the effective anode voltage. Thus, the well-known in X-ray tomography effect of increasing the hardening of radiation appeared.

Conlusions. In veterinary medicine, compared to human medicine, the presence of personnel who fix the animal with their hands is fundamentally different. This workplace is located in close proximity to both the direct X-ray beam and the maximum scattered radiation. It requires special attention during calculating X-ray protection. The small size of the cabin, where the X-ray examination is performed, reduces the area and the price of structural protection. That determines the economic attractiveness of the concept.

References

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