Problems of Radiation Medicine and Radiobiology

Testing and validation of methods for dose measuring in anisotropic fields under occupational exposure in interventional cardiology
V. N. Voloskyi, V. V. Chumak, E. V. Bakhanova, A. A. Morgun
State Institution “National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine”, Melnykov str., 53, Kyiv, 04050, Ukraine

Study objective. Experimental testing of the practical application of methodology developed for the individual effective doses assay in an NPP staff by means of 4 dosimeters in case of non-uniform external exposure with known angular characteristics of the radiation field.
Materials and methods. Two series of experimental phantom measurements were held at the workplaces of interventional cardiologists during a procedures in an X-ray operating room.
Results and conclusions. Dose fields in a body of healthcare professional are characterized by the high gradients and readings of individual dosimeters depending on location can differ from 1.5 to 10 times. Thus a single dosimeter is not a source of sufficient information for accurate estimation of an effective dose. Studies have confirmed the possibility of NPP technique application at the workplace of interventional cardiologist. The essential need for a strict control of the eye lens doses is demonstrated.

Key words: effective dose, organ dose, phantom measurements, TL dosimetry, X-ray, interventional radiology.

Problems of radiation medicine and radiobiology. 2013;18:70–81.