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Prescription Dose Guideline Based on Physical Criterion for Multiple Metastatic Brain Tumors Treated With Stereotactic Radiosurgery
 
"Purpose Existing dose guidelines for intracranial stereotactic radiosurgery (SRS) are primarily based on single-target treatment data. This study investigated dose guidelines for multiple targets treated with SRS. " [+ leia mais]
Fonte: Int J of Radiation Oncoloy, Biology & Physics
 
 
Incorporating Quantitative Single Photon Emission Computed Tomography into Radiation Therapy Treatment Planning for Lung Cancer: Impact of Attenuation
 
"Purpose To assess the impact of attenuation and scatter corrections on the calculation of single photon emission computed tomography (SPECT)–weighted mean dose (SWMD) and functional volume segmentation as applied to radiation therapy treatment planning for lung cancer. " [+ leia mais]
Fonte: Int J of Radiation Oncoloy, Biology & Physics
 
 
Detection and compensation of organ/lesion motion using 4D-PET/CT respiratory gated acquisition techniques
 
"Purpose To describe the degradation effects produced by respiratory organ and lesion motion on PET/CT images and to define the role of respiratory gated (RG) 4D-PET/CT techniques to compensate for such effects. " [+ leia mais]
Fonte: Radiotherapy and Oncology
 
 
Patient setup for PET/CT acquisition in radiotherapy planning
 
"Abstract PET/CT imaging modalities have been shown to be useful in the diagnosis, staging, and monitoring of malignant diseases. Its inclusion into the treatment planning process is now central to modern radiotherapy practice. " [+ leia mais]
Fonte: Radiotherapy and Oncology
 
 
PET/CT (and CT) instrumentation, image reconstruction and data transfer for radiotherapy planning
 
"Abstract The positron emission tomography in combination with CT in hybrid, cross-modality imaging systems (PET/CT) gains more and more importance as a part of the treatment-planning procedure in radiotherapy. " [+ leia mais]
Fonte: Radiotherapy and Oncology
 
 
Stereotactic body radiation therapy: The report of AAPM Task Group 101
 
"Task Group 101 of the AAPM has prepared this report for medical physicists, clinicians, and therapists in order to outline the best practice guidelines for the external-beam radiation therapy technique referred to as stereotactic body radiation therapy SBRT." [+ leia mais]
Colaborador: Laura Natal Rodrigues
Fonte: AAPM
 
 
Alemanha aposta em energia nuclear
 
"Governo estendeu vida útil de 17 usinas O governo da primeira-ministra da Alemanha, a conservadora Angela Merkel, concordou ontem em estender o prazo de vida útil de dezessete usinas nucleares do país." [+ leia mais]
Fonte: Jornal da Ciência
 
 
Intensity modulated dose calculation with an improved experimental pencil-beam kernel
 
Purpose: This article presents an improved pencil-beam dose calculation formalism based on an experimental kernel obtained by deconvolution. The new algorithm makes it possible to calculate the absorbed dose for all field sizes. [+ leia mais]
Fonte: Medical Physics
 
 
Estimation of organ doses from kilovoltage cone-beam CT imaging used during radiotherapy patient position verification
 
Purpose: The purpose of this study was to develop a practical method for estimating organ doses from kilovoltage cone-beam CT (CBCT) that can be performed with readily available phantoms and dosimeters. [+ leia mais]
Fonte: Medical Physics
 
 
Special report: Workshop on 4D-treatment planning in actively scanned particle therapy—Recommendations, technical challenges, and future research dire
 
This article reports on a 4D-treatment planning workshop (4DTPW), held on 7–8 December 2009 at the Paul Scherrer Institut (PSI) in Villigen, Switzerland. [+ leia mais]
Fonte: Medical Physics
 
 
Spatially weighted mutual information image registration for image guided radiation therapy
 
Purpose: To develop a new metric for image registration that incorporates the (sub)pixelwise differential importance along spatial location and to demonstrate its application for image guided radiation therapy (IGRT). [+ leia mais]
Fonte: Medical Physics
 
 
XXV Congresso Brasileiro de Medicina Nuclear
 
A Sociedade Brasileira de Biologia, Medicina Nuclear e Imagem Molecular (SBBMN) promove no período de 4 a 7 de setembro, em Belém do Pará, a 25ª edição do seu congresso bienal. [+ leia mais]
Fonte: IPEN
 
 
Físicos vão procurar matéria escura dentro de mina subterrânea
 
"Câmaras de bolhas Sempre que se fala em matéria escura, logo se imagina supertelescópios e sondas espaciais escarafunchando os confins do Universo em busca de alguma pista que possa explicar essa matéria que parece estar lá, mas não pode ser vista." [+ leia mais]
Fonte: Inovação Tecnológica
 
 
Site que permite discussão sobre pesquisa em saúde já está no ar
 
"Técnicos e pessoas interessadas já podem opinar virtualmente sobre os critérios a serem adotados na Pesquisa Nacional de Saúde (PNS) - uma espécie de radiografia da saúde do brasileiro, prevista para 2012 e 2013. A discussão está disponível por meio do site lançado nesta terça-feira, 31, pelo Ministério da Saúde. " [+ leia mais]
Fonte: Estadão
 
 
Physical radiotherapy treatment planning based on functional PET/CT data
 
"Abstract Positron emission tomography (PET) provides molecular information about the tumor microenvironment in addition to anatomical imaging. Hence, it seems to be highly beneficial to integrate PET data into radiotherapy (RT) treatment planning." [+ leia mais]
Fonte: Radiotherapy and Oncology
 
 
Detection and compensation of organ/lesion motion using 4D-PET/CT respiratory gated acquisition techniques
 
"Purpose To describe the degradation effects produced by respiratory organ and lesion motion on PET/CT images and to define the role of respiratory gated (RG) 4D-PET/CT techniques to compensate for such effects. " [+ leia mais]
Fonte: Radiotherapy and Oncology
 
 
Segmentation of positron emission tomography images: Some recommendations for target delineation in radiation oncology
 
"Abstract Positron emission tomography can be used in radiation oncology for the delineation of target volumes in the treatment planning stage. Numerous publications deal with this topic and the scientific community has investigated many methodologies, ranging from simple uptake thresholding to very elaborate probabilistic models. Nevertheless, no consensus seems to emerge." [+ leia mais]
Fonte: Radiotherapy and Oncology
 
 
Patient setup for PET/CT acquisition in radiotherapy planning
 
"Abstract PET/CT imaging modalities have been shown to be useful in the diagnosis, staging, and monitoring of malignant diseases. Its inclusion into the treatment planning process is now central to modern radiotherapy practice. However, it is essential to be cognisant of the factors that are necessary in order to ensure that the acquired images are consistent with the requirements for both treatment planning and treatment delivery." [+ leia mais]
Fonte: Radiotherapy and Oncology
 
 
Tomotherapy and Multifield Intensity-Modulated Radiotherapy Planning Reduce Cardiac Doses in Left-Sided Breast Cancer Patients With Unfavorable Cardia
 
"Purpose For patients with left-sided breast cancers, radiation treatment to the intact breast results in high doses to significant volumes of the heart, increasing the risk of cardiac morbidity, particularly in women with unfavorable cardiac anatomy." [+ leia mais]
Fonte: Int J of Radiation Oncology, Biology & Physics
 
 
Single-Isocenter Frameless Intensity-Modulated Stereotactic Radiosurgery for Simultaneous Treatment of Multiple Brain Metastases: Clinical Experience
 
"Purpose To describe our clinical experience using a unique single-isocenter technique for frameless intensity-modulated stereotactic radiosurgery (IM-SRS) to treat multiple brain metastases." [+ leia mais]
Fonte: Int J of Radiation Oncology, Biology & Physics
 
 
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