Study of gamma radiation transfer through collimator in nuclear medicine applications

M. A. Gurko, A. N. Konovalov, S. M. Prigarin

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

The point spread function (PSF) plays an important role in methods such as single photon emission computed tomography (SPECT). This function is most often approximated using the Gaussian distribution, as a convenient to use function. In this work a geometric model was developed that allows to estimate the intensity distribution of the gamma quantum flux from a point source after passing through the collimator. When developing this model, it was noticed that the approximation of the PSF by the Gaussian function is not always qualitative. So, for example, at distances of 200-300 mm to the source, the approximation by the Gaussian function can be called accurate, in contrast to other cases. Also, a software package based on the Monte Carlo method was developed, which makes it possible to obtain images of a spot from a point source by SPECT. Only a small discrepancy was found between the Monte Carlo spot size and the geometric model data. These discrepancies are related taking into account the distance between the collimator and the detector.

Язык оригиналаанглийский
Название основной публикацииInternational Conference on the Methods of Aerophysical Research, ICMAR 2020
РедакторыVasily M. Fomin, Alexander Shiplyuk
ИздательAmerican Institute of Physics Inc.
ISBN (электронное издание)9780735440999
DOI
СостояниеОпубликовано - 24 мая 2021
Событие20th International Conference on the Methods of Aerophysical Research, ICMAR 2020 - Akademgorodok, Novosibirsk, Российская Федерация
Продолжительность: 1 ноя 20207 ноя 2020

Серия публикаций

НазваниеAIP Conference Proceedings
Том2351
ISSN (печатное издание)0094-243X
ISSN (электронное издание)1551-7616

Конференция

Конференция20th International Conference on the Methods of Aerophysical Research, ICMAR 2020
СтранаРоссийская Федерация
ГородAkademgorodok, Novosibirsk
Период01.11.202007.11.2020

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