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ABFM NEWS - Radioterapia
 
Reduction of Dose Delivered to Organs at Risk in Prostate Cancer Patients via Image-Guided Radiation Therapy
 
"Purpose To determine whether image guidance can improve the dose delivered to target organs and organs at risk (OARs) for prostate cancer patients treated with intensity-modulated radiotherapy (IMRT). " [+ leia mais]
Colaborador: Laura Natal Rodrigues
Fonte: Int Journal of Radiation Oncology Biology Physics
 
 
Cone-Beam CT Assessment of Interfraction and Intrafraction Setup Error of Two Head-and-Neck Cancer Thermoplastic Masks
 
"Purpose To prospectively compare setup error in standard thermoplastic masks and skin-sparing masks (SSMs) modified with low neck cutouts for head-and-neck intensity-modulated radiation therapy (IMRT) patients. " [+ leia mais]
Colaborador: Laura Natal Rodrigues
Fonte: Int Journal of Radiation Oncology Biology Physics
 
 
Equivalence in Dose Fall-Off for Isocentric and Nonisocentric Intracranial Treatment Modalities and Its Impact on Dose Fractionation Schemes
 
"Purpose To investigate whether dose fall-off characteristics would be significantly different among intracranial radiosurgery modalities and the influence of these characteristics on fractionation schemes in terms of normal tissue sparing. " [+ leia mais]
Colaborador: Laura Natal Rodrigues
Fonte: Int Journal of Radiation Oncology Biology Physics
 
 
Implementation of a New Method for Dynamic Multileaf Collimator Tracking of Prostate Motion in Arc Radiotherapy Using a Single kV Imager
 
"Purpose To implement a method for real-time prostate motion estimation with a single kV imager during arc radiotherapy and to integrate it with dynamic multileaf collimator (DMLC) target tracking. " [+ leia mais]
Colaborador: Laura Natal Rodrigues
Fonte: Int J of Radiation Oncology Biology Physics
 
 
Dose–Volume Constraints to Reduce Rectal Side Effects From Prostate Radiotherapy: Evidence From MRC RT01 Trial ISRCTN 47772397
 
"Purpose Radical radiotherapy for prostate cancer is effective but dose limited because of the proximity of normal tissues. Comprehensive dose–volume analysis of the incidence of clinically relevant late rectal toxicities could indicate how the dose to the rectum should be constrained. Previous emphasis has been on constraining the mid-to-high dose range (≥50 Gy). Evidence is emerging that lower doses could also be important. " [+ leia mais]
Colaborador: Laura Natal Rodrigues
Fonte: Int J of Radiation Oncology Biology Physics
 
 
Dose convolution filter: Incorporating spatial dose information into tissue response modeling
 
"Purpose: A model is introduced to integrate biological factors such as cell migration and bystander effects into physical dose distributions, and to incorporate spatial dose information in plan analysis and optimization. " [+ leia mais]
Colaborador: Laura Natal Rodrigues
Fonte: Medical Physics
 
 
Radiochromic film is superior to ion chamber arrays for IMRT quality assurance
 
"OVERVIEW Because of the complexity of fields used for IMRT, it is important to verify that all delivered fields are the same as those that were planned. A number of methods to make the required beam intensity distribution measurements to assure such congruence are in use, including radiochromic film and ionization chamber arrays. The claim that radiochromic film is superior to ionization chamber arrays for IMRT quality assurance is the Proposition debated in this month|s Point/Counterpoint. " [+ leia mais]
Colaborador: Laura Natal Rodrigues
Fonte: Medical Physics
 
 
Optimizing dose prescription in stereotactic body radiotherapy for lung tumours using Monte Carlo dose calculation
 
"Purpose To define a method of dose prescription employing Monte Carlo (MC) dose calculation in stereotactic body radiotherapy (SBRT) for lung tumours aiming at a dose as low as possible outside of the PTV. " [+ leia mais]
Colaborador: Gabriela Reis dos Santos
Fonte: Radiotherapy and Oncology
 
 
Quantitative evaluation of cone-beam computed tomography in target volume definition for offline image-guided radiation therapy of prostate cancer
 
"Purpose To quantitatively evaluate cone-beam CT (CBCT) in target volume definition in an offline image guidance environment. " [+ leia mais]
Colaborador: Gabriela Reis dos Santos
Fonte: Radiotherapy and Oncology
 
 
Biological in situ Dose Painting for Image-Guided Radiation Therapy Using Drug-Loaded Implantable Devices
 
"Purpose Implantable devices routinely used for increasing spatial accuracy in modern image-guided radiation treatments (IGRT), such as fiducials or brachytherapy spacers, encompass the potential for in situ release of biologically active drugs, providing an opportunity to enhance the therapeutic ratio. We model this new approach for two types of treatment. " [+ leia mais]
Colaborador: Marcela Setti
Fonte: Int J Radiation Oncology, Biology, Physics
 
 
Clinical Experience With Image-Guided Radiotherapy in an Accelerated Partial Breast Intensity-Modulated Radiotherapy Protocol
 
"Purpose To explore the feasibility of fiducial markers for the use of image-guided radiotherapy (IGRT) in an accelerated partial breast intensity modulated radiotherapy protocol. " [+ leia mais]
Colaborador: Marcela Setti
Fonte: Int J Radiation Oncology, Biology and Physics
 
 
Biological effect of different IMRT delivery techniques: SMLC, DMLC, and helical tomotherapy
 
Purpose: Intensity-modulated radiotherapy (IMRT) is delivered using a variety of techniques with differing temporal dose characteristics. Spatial dose metrics are generally used to evaluate treatment plan quality. [+ leia mais]
Colaborador: Érika Yumi Watanabe
Fonte: Medical Physics
 
 
A treatment planning study comparing helical tomotherapy with intensity-modulated radiotherapy for the treatment of anal cancer☆
 
"Purpose A planning study to compare helical tomotherapy (HT) and intensity-modulated radiotherapy (IMRT) for the treatment of anal canal cancer. " [+ leia mais]
Colaborador: Gabriela Reis dos Santos
Fonte: Radiotherapy and Oncology
 
 
Interfractional Uncertainty in the Treatment of Pancreatic Cancer With Radiation
 
"Purpose To compare the interfractional variation in pancreatic tumor position using bony anatomy and implanted fiducial markers. " [+ leia mais]
Colaborador: Gabriela Reis dos Santos
Fonte: Int J of Radiation Oncology, Biology and Physics
 
 
Radiographic and Anatomic Basis for Prostate Contouring Errors and Methods to Improve Prostate Contouring Accuracy
 
"Purpose Use of highly conformal radiation for prostate cancer can lead to both overtreatment of surrounding normal tissues and undertreatment of the prostate itself. In this retrospective study we analyzed the radiographic and anatomic basis of common errors in computed tomography (CT) contouring and suggest methods to correct them. " [+ leia mais]
Colaborador: Gabriela Reis dos Santos
Fonte: Int J of Radiation Oncology, Biology and Physics
 
 
3D CT-based volumetric dose assessment of 2D plans using GEC-ESTRO guidelines for cervical cancer brachytherapy
 
"Purpose To investigate two-dimensional (2D) radiograph-based plans using three-dimensional (3D) dose–volume histogram (DVH) parameters following guidelines from Gynecologic GEC-ESTRO Working Group (GEC-ESTRO). " [+ leia mais]
Colaborador: Fábio Strina Juliasz
Fonte: Brachytherapy Journal
 
 
High-dose-rate brachytherapy in combination with conformal external beam radiotherapy in the treatment of prostate cancer
 
"Purpose To report long-term outcomes for treatment of prostate cancer using dose escalation with high-dose-rate (HDR) brachytherapy and 3-dimensional conformal external beam radiotherapy (3DCRT), and compare them with outcomes for treatment of prostate cancer with 3DCRT alone at the same institution. " [+ leia mais]
Colaborador: Fábio Strina Juliasz
Fonte: Brachyterapy Journal
 
 
American Society for Therapeutic Radiology and Oncology (ASTRO) and American College of Radiology (ACR) Practice Guideline for the Performance of Ster
 
"Preamble These guidelines are an educational tool designed to assist practitioners in providing appropriate radiologic care for patients." [+ leia mais]
Colaborador: Gabriela Reis dos Santos
Fonte: Int journal of rad oncology, biology, physics
 
 
American Society for Therapeutic Radiology and Oncology (ASTRO) and American College of Radiology (ACR) Practice Guidelines for Image-Guided Radiation
 
"Preamble These guidelines are an educational tool designed to assist practitioners in providing appropriate radiologic care for patients." [+ leia mais]
Colaborador: Gabriela Reis dos Santos
Fonte: Int journal of rad oncology, biology, physics
 
 
Re-irradiation of metastatic spinal cord compression: A feasibility study by volumetric-modulated arc radiotherapy for in-field recurrence creating a
 
"Abstract When local recurrences arise within an irradiated region involving metastatic spinal cord compression, the dose limit to the spinal cord reduces the chance to re-treat the patient by 3D-conformational RT technique. The possibility of using volumetric modulated arc RT by RapidArc was evaluated for dose sparing at spinal cord level and preserving target coverage. A clinically satisfactory PTV coverage and dose sparing to the spinal cord were obtained. An upcoming trial on patients will provide clinical outcomes." [+ leia mais]
Fonte: Radiotherapy and Oncology
 
 
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