Time filter

Source Type

Lebedev A.L.,Russian Research Center for Roentgenoradiology | Plautin O.N.,Russian Research Center for Roentgenoradiology
Biomedical Engineering | Year: 2011

In case of remote and contact radiation therapy of oncological diseases using photon radiation, organs and tissues around the pathological lesion (irradiation target) are exposed to nonuniform ionizing radiation. The dose-effect ratio of nonuniform ionizing radiation in the exposed organ can vary by dozens of times. Therefore, it is difficult to estimate the dose of nonuniform radiation, which increases at the expense of application of different methods of exposure. In radiobiological practice, it is well known that the degree of body damage depends on the dose of radiation and exposed volume (number of exposed cells). The problem of estimation of the dose of radiation in case of nonuniform exposure can be solved by using the modal dose (dosimetric test characterizing irradiation of the maximum number of cells). This method provides a separate estimation of the degree for each method of beam therapy. © 2011 Springer Science+Business Media, Inc.


Stavitskii R.V.,Russian Research Center for Roentgenoradiology | Solodkii V.A.,Russian Research Center for Roentgenoradiology | Lebedev A.L.,Russian Research Center for Roentgenoradiology | Plautin O.N.,Russian Research Center for Roentgenoradiology
Biomedical Engineering | Year: 2010

Evaluation of the status of human health can be based on indices of the peripheral blood. These indices are correlated in the AKS-ENOFIT system. This system is based on the theory of pattern recognition and cluster analysis. The AKS-ENOFIT system consists of a training sample, assembled for healthy and sick patients of the two genders, and a decision program for eleven systems of the human body (a list of diseases inherent in separate systems of the human body was reported in [1-4]). The system can be used to conduct periodic examination of patients and to monitor the efficacy of their therapy. © 2010 Springer Science+Business Media, Inc.


Lebedev A.L.,Russian Research Center for Roentgenoradiology | Plautin O.N.,Russian Research Center for Roentgenoradiology
Biomedical Engineering | Year: 2010

Improvement of methods of remote and contact radiation therapy based on the use of dose distribution hardware makes it necessary to provide metrological monitoring of the dose value. International recommendations on the positioning of the dose point require the scattered radiation to be taken into account. Thus, the dose accumulation factor becomes dependent on the shape and size of the radiation field. The paper presents experimental data on the variability of the photon radiation accumulation factor. © 2010 Springer Science+Business Media, Inc.

Loading Russian Research Center for Roentgenoradiology collaborators
Loading Russian Research Center for Roentgenoradiology collaborators