Results 1 to 10 of about 8,174 (215)
Attributable patient risk in nuclear medicine procedures and establishment of diagnostic reference levels. [PDF]
J Appl Clin Med Phys, 2023 Abstract The assessment of risk related to medical exposures as a justification tool to assist decision‐making of the medical team is not available in clinical routine. The determination of diagnostic reference levels (DRLs) for nuclear medicine (NM) procedures has been proposed as an optimization tool, but this tool has still been aimed at a standard ...
de Souza Ribeiro JC +2 more
europepmc +2 more sources
Development and validation of a Monte Carlo model of a mobile accelerator for intraoperative radiation therapy. [PDF]
Med PhysAbstract Background Intraoperative electron radiation therapy (IOERT) relies on accurate and precise dose delivery to the tumor or tumor bed using mobile accelerators and interchangeable applicators, while critical organs are typically displaced or shielded during surgery. Treatment planning and linac commissioning are often based on water measurements,
Ayala R +5 more
europepmc +2 more sources
“Povera E Nuda Vai, Dosimetria” [PDF]
Health Physics, 1972 Abstract The concepts used in radiation protection are critically reviewed. It is concloaed that primary attention should be given to the specification of radiation fields in terms of particle flux density and energy spectra, from which all other parameters needed in health physics may be derived.
Rindi, Alessandro, Thomas, Ralph H.
exaly +6 more sources
Termoluminescência de materiais e sua aplicação em dosimetria da radiação
Ceramica, 1998 A dosimetria termoluminescente é uma ferramenta versátil para a avaliação da dose de radiação ionizante. A grande variedade de materiais cerâmicos e suas diferentes formas físicas permitem a determinação da qualidade da radiação em um intervalo de doses ...
Letícia L. Campos
exaly +3 more sources
A feasibility study of a H2O-moderated 252Cf source for metrology
Brazilian Journal of Radiation Sciences, 2023 The new edition of ISO 8529 series reduced from 4 to 3 standard neutron reference field. Recent studies have highlighted the increasing importance of characterizing neutron source spectra at different energies to obtain appropriate fluence-to-dose ...
Angela Souza Gonçalves +4 more
doaj +1 more source
Use of voxelized thyroid models to develop a physical-anthropomorphic phantom for 3D printing
Brazilian Journal of Radiation Sciences, 2021 The monitoring of the intake os radionuclides by workers and public individuals, using in vivo measurements, requires the application of calibration factors obtained with physical-anthropomorphic phantoms.
Tayrine Moratelli da Silva +9 more
doaj +1 more source
Brazilian Journal of Radiation Sciences, 2021 A estimativa da atividade retida no corpo humano por meio de medidas in vivo requer o uso de fatores de calibração obtidos com simuladores físicos-antropomórficos.
Tayrine Moratelli da Silva +7 more
doaj +1 more source
Brazilian Journal of Radiation Sciences, 2020 O tratamento de linfoma de Hodgkin com radioterapia tem sido aprimorado nas últimas décadas de forma a minimizar os efeitos colaterais danosos da radiação ionizante no paciente.
Vitor Jesus Oliveira +4 more
doaj +1 more source
Monte Carlo Characterization of an Individual Albedo Neutron Monitor
Brazilian Journal of Radiation Sciences, 2021 An individual albedo neutron dosimeter is simulated with the Geant4 toolkit. The simulation results are compared with results from an international intercomparison for Monte Carlo codes.
Rosane Moreira Ribeiro +1 more
doaj +1 more source
Medical Physics, Volume 47, Issue 9, Page 4574-4588, September 2020., 2020 Purpose The purpose of this work is to calculate individualized dose distributions in patients undergoing 18F‐FDG PET/CT studies through a methodology based on full Monte Carlo (MC) simulations and PET/CT patient images, and to compare such values with those obtained by employing nonindividualized phantom‐based methods.
Sara Neira +10 more
wiley +1 more source