Yu.P. Zinchenko – Academic of RAE, Dr.Sc.(Psych.), Professor, Dean of Faculty of Psychology, 

Lomonosov Moscow State University

E-mail: zinchenko_y@mail.ru

E.I. Rasskazova – Ph.D.(Psych.), Associate Professor, 

Department of Neuro- and Pathopsychology, Faculty of Psychology, Lomonosov Moscow State University E-mail: e.i.rasskazova@gmail.com

R.S. Shilko – Ph.D.(Psych.), Associate Professor, 

Department of Psychology Methodology, Faculty of Psychology, Lomonosov Moscow State University

E-mail: shilko_rs@psy.msu.ru

M.S. Kovyazina – Corresponding Member of RAE, Dr.Sc.(Psych.), Associate Professor, Professor, 

Department of Neuro- and Pathopsychology, Faculty of Psychology, Lomonosov Moscow State University

E-mail: kms130766@mail.ru

A.P. Chernyaev – Dr.Sc.(Phys.-Math.), Head of Department of Physics of Accelerators and Radiation Medicine, 

Faculty of Physics, Lomonosov Moscow State University; 

Head of Laboratory of Beam Technologies and Medical Physics, 

Skobeltsyn Institute of Nuclear Physics of Lomonosov Moscow State University

E-mail: a.p.chernyaev@yandex.ru

S.M. Varzar – Ph.D.(Phys.-Math.), Associate Professor, 

Department of Physics of Accelerators and Radiation Medicine, Faculty of Physics, Lomonosov Moscow State University

E-mail: varzar@physics.msu.ru

M.V. Zheltonozhskaya – Ph.D.(Eng.), Senior Research Scientist, 

Department of Physics of Accelerators and Radiation Medicine, Faculty of Physics, Lomonosov Moscow State University; 

Leading Engineer, Laboratory of Beam Technology and Medical Physics, 

Skobeltsyn Institute of Nuclear Physics of Lomonosov Moscow State University

E-mail: zhelton@yandex.ru

E.N. Lykova – Senior Lecturer, 

Faculty of Physics, Lomonosov Moscow State University; 

Leading Engineer, Laboratory of Beam Technology and Medical Physics, 

Skobeltsyn Institute of Nuclear Physics of Lomonosov Moscow State University

E-mail: iv-kate@yandex.ru

V.V. Rozanov – Dr.Sc.(Biol.), Professor, 

Department of Physics of Accelerators and Radiation Medicine, Faculty of Physics, Lomonosov Moscow State University;  Main Research Scientist, All-Russian Scientific Research Institute of Medicinal and Aromatic Plants (Moscow)

E-mail: vrozanov@mail.ru

Evaluation of the effectiveness of radiation therapy cannot be complete without taking into account the situation of the patients themselves. How a person reacts to the appointment of radiation therapy, what condition is in front of her, what she knows about her, side effects, consequences, and what she fears can also affect both the effectiveness of therapy and the risks associated with it. Radiological risk factors in radiation therapy can be associated with an increase in dose loading, primarily from unaccounted dose loading caused by flows of secondary particles. Psychological factors are largely related to the subjective attitude towards radiation therapy, anxiety about the health and well-being of patients, which requires a diagnosis of this relationship and possible psychological correction.

The study was conducted in two stages.

At the first stage, to identify the radiological risk factors during radiation therapy with high-energy photons, the fluxes of secondary neutrons were studied during the operation of the linear medical accelerator Varian Trilogy. Both direct measurements of the neutron spectrum in the room were carried out during operation of a medical accelerator using an SDMF-1608PRO.DB spectrometerdosimeter with an organic scintillator, and measurements directly under the beam using the Bonner spheres method based on neutron spectrometry using a set of moderator balls of various diameters, in the center of which is a compact detector. The obtained experimental data on the neutron energy and the activation of tantalum monitor targets were used to evaluate the fast neutron flux, which in turn made it possible to develop a number of specific recommendations for increasing the efficiency of radiation therapy while minimizing the radiological risks associated with the additional dose from secondary neutrons.

The second stage was a clinical and psychological examination of patients with cancer, first sent to radiation therapy. A structured clinical and psychological interview was conducted with all respondents, aimed at creating motivation for the examination, as well as identifying their current status, subjective complaints, attitude to the disease and treatment, followed by filling out modified ques-

tionnaires (Beliefs about Medication Questionnaire, Horne et al., 1996), self-regulation questionnaire regarding health and disease (Kovyazina et al., 2019)). The diagnosis of subjective well-being was based on the model of E. Diener (Diener et al., 2009). It has been shown that the risk groups for psychological work are primarily elderly people due to a higher level of anxiety about radiation therapy against the background of confidence in its necessity, as well as people with minimal functional impairment due to cancer due to their doubts about the need for such an appointment. Further research should be aimed at expanding the samples and assessing various sociodemographic factors in relation to radiation therapy, as well as studying the prognostic value of the attitude to radiation therapy in patients with cancer.

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