Results 1 to 10 of about 1,258 (148)

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, de Mendes JDS, de Sá LV.   +2 more
europepmc   +2 more sources

New Optimization Strategies on Radiation Protection in Fluoroscopy-Guided Interventional Procedures in Pediatrics [PDF]

Children, 2023
The term fluoroscopically guided interventional procedure describes a clinical practice in medicine, where fluoroscopic systems are used to conduct diagnostic procedures or provide image guidance for therapeutic interventional procedures performed via ...
Carlos Ubeda
doaj   +2 more sources

Development and validation of a Monte Carlo model of a mobile accelerator for intraoperative radiation therapy. [PDF]

Med Phys
Abstract 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, Soza Á, García MJ, García R, Udías JM, Ibáñez P.   +5 more
europepmc   +2 more sources

Dosimetría en radiología

Revista Argentina de Radiología, 2014
El constante crecimiento del uso de radiaciones ionizantes en el Diagnóstico por Imágenes nos obliga a mantener una adecuada gestión de las dosis impartidas a los pacientes en cada estudio realizado.
D. Andisco, S. Blanco, A.E. Buzzi
doaj   +2 more sources

Dosimetría Química de irradiadores gamma de 60Co y 137Cs de uso semi-industrial e investigación

Nova Scientia, 2017
Se realizó la dosimetría en campos de radiación de 60Co y de 137Cs, correspondientes al irradiador Gammabeam 651PT, recargado con nuevas barras de 60Co y de un nuevo irradiador autoblindado Gammacell-3000 Elan de 137Cs que fue adquirido con fondos ...
María Guadalupe Albarrán Sánchez, Edith Mendoza Villavicencio, Epifanio Cruz Zaragoza   +2 more
doaj   +2 more sources

Quantification of internal dosimetry in PET patients: individualized Monte Carlo vs generic phantom‐based calculations

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, Jacobo Guiu‐Souto, Pablo Díaz‐Botana, Paulino Pais, Carlos Fernández, Virginia Pubul, Álvaro Ruibal, Cristian Candela‐Juan, Araceli Gago‐Arias, Miguel Pombar, Juan Pardo‐Montero   +10 more
wiley   +1 more source

Comparación de parámetros de la carga vocal mediante dosimetría en profesoras.

Revista de Investigación en Logopedia, 2022
La carga vocal es definida como la cantidad de trabajo realizado por el mecanismo laríngeo a lo largo del tiempo. No se encontraron estudios de su valoración diferenciada en la sala de clases y en el espacio de simulación clínica.
Patricio Alonso Orellana Marambio, Alicia Núñez Zamora, Fabiola Marín Garrido   +2 more
doaj   +1 more source

Caracterização de dosímetros de Al2O3:C para dosimetria de fótons utilizando a técnica OSL

Brazilian Journal of Radiation Sciences, 2017
A dosimetria opticamente estimulada (OSL) tem ganhado destaque em aplicações clínicas e acadêmicas no Brasil. Nesse trabalho, são apresentados resultados da caracterização OSL dos dosímetros de Al2O3:C (TLD-500) fabricados pela Rexon™ Components and TLD ...
Daniel Villani, Shirlane Barbosa de Almeida, Letícia Lucente Campos   +2 more
doaj   +1 more source

The Growth of Monoraphidium sp. and Scenedesmus sp. Cells in the Presence of Thorium

The Scientific World Journal, Volume 2012, Issue 1, 2012., 2012
Toxicity of thorium by Monoraphidium sp. and Scenedesmus sp. was studied. Microalgal cultures were inoculated in ASM‐1 medium in presence and absence of thorium. Its effect was monitored by direct counting on Fuchs‐Rosenthal chamber and with software. The toxicity of thorium over the species was observed for concentrations over 50.0 mg/L. After 30 days,
Juliana Cristina de Queiroz, Ana Cristina de Melo Ferreira, Antonio Carlos Augusto da Costa, Pavel Povinec, Steven Y. Qian   +4 more
wiley   +1 more source

Pastillas sinterizadas de Al2O3 como dosímetros termoluminiscentes

Ingeniería y Ciencia, 2012
La verificación de la dosis de radiación recibida por el área expuesta durante eltratamiento médico es esencial para la evaluación de cualquier régimen de radioterapia.Este trabajo describe las caracteríısticas termoluminiscentes (TL)de pastillas ...
Amalia Osorio, Juana Salcedo, Rafael Cogollo   +2 more
doaj   +1 more source