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ABFM NEWS - Radioterapia
 
Correlation Between Dosimetric Parameters and Late Rectal and Urinary Toxicities in Patients Treated With High-Dose-Rate Brachytherapy Used as Monothe
 
"Purpose To evaluate the correlation between dosimetric parameters and late rectal and urinary toxicities in high-dose-rate brachytherapy (HDR-BT) used as monotherapy for prostate cancer " [+ leia mais]
Fonte: Int Journal of Radiation Oncology Biology
 
 
Monte Carlo simulation of the neutron spectral fluence and dose equivalent for use in shielding a proton therapy vault
 
Abstract. Neutron production is of principal concern when designing proton therapy vault shielding. Conventionally, neutron calculations are based on analytical methods, which do not accurately consider beam shaping components and nozzle shielding. [+ leia mais]
Colaborador: Gabriela Reis dos Santos
Fonte: Physics in Medicine and Biology
 
 
Using surface imaging and visual coaching to improve the reproducibility and stability of deep-inspiration breath hold for left-breast-cancer radiothe
 
Abstract. Late cardiac complications may arise after left-breast radiation therapy. Deep-inspiration breath hold (DIBH) allows reduction of the irradiated heart volume at the same time as it reduces tumor bed motion and increases lung sparing. In the present study, we have evaluated the [+ leia mais]
Colaborador: Laura Natal Rodrigues
Fonte: IOP - Physics in Medicine and Biology
 
 
Bi- and tri-exponential fitting to TG-43 radial dose functions of brachytherapy sources based on a genetic algorithm
 
"Purpose To find the coefficients for bi- and tri-exponential fitting functions to represent the radial dose functions of 16 commercially available brachytherapy sources. " [+ leia mais]
Colaborador: Fábio Strina
Fonte: Brachyterapy
 
 
Critical discussion of different dose–volume parameters for rectum and urethra in prostate brachytherapy
 
"Purpose To compare different dose–volume histogram (DVH) parameter concepts used for rectum and urethra. " [+ leia mais]
Colaborador: Fábio Strina
Fonte: Brachyterapy
 
 
"Investigation of the dosimetric accuracy of the isocenter shifting method in prostate cancer patients with and without hip prostheses"
 
Purpose: The use of image guided radiation therapy (IGRT) enables compensation for prostate movement by shifting the treatment isocenter to track the prostate on a daily basis. [+ leia mais]
Colaborador: Érika Yumi Watanabe
Fonte: Medical Physics
 
 
"Three-dimensional ultrasound system for guided breast brachytherapy"
 
Breast-conserving surgery combined with subsequent radiation therapy is a standard procedure in breast cancer treatment. The disadvantage of whole-breast beam irradiation is that it requires 20–25 treatment days, [+ leia mais]
Colaborador: Érika Yumi Watanabe
Fonte: Medical Physics
 
 
Comparing the accuracy of four-dimensional photon dose calculations with three-dimensional calculations using moving and deforming phantoms"
 
Purpose: Four-dimensional (4D) dose calculation algorithms, which explicitly incorporate respiratory motion in the calculation of doses, have the potential to improve the accuracy of dose calculations in thoracic treatment planning [+ leia mais]
Colaborador: Érika Yumi Watanabe
Fonte: Medical Physics
 
 
"Longitudinal study using a diode phantom for helical tomotherapy IMRT QA"
 
"Purpose: The Caribbean Radiation Oncology Center acquired a DELTA4® diode phantom for helical tomotherapy IMRT QA and presents the results of their first 264 clinical cases. " [+ leia mais]
Colaborador: Érika Yumi Watanabe
Fonte: Medical Physics
 
 
Dosimetric Study of Pelvic Proton Radiotherapy for High-Risk Prostate Cancer
 
"To compare dose distributions in targeted tissues (prostate, seminal vesicles, pelvic regional nodes) and nontargeted tissues in the pelvis with intensity-modulated radiotherapy (IMRT) and forward-planned, double-scattered, three-dimensional proton radiotherapy (3D-PRT). " [+ leia mais]
Fonte: Int Journal of Radiation Oncology Biology
 
 
Twinning partnerships through International Atomic Energy Agency (IAEA) to improve radiotherapy in common paediatric cancers in low- and...
 
The article summarises the current use of radiotherapy (RT) in childhood cancer and suggests methods to improve current practice in regions where outcomes of paediatric cancer patients are inferior to those of high-income countries. [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: Radiotherapy and Oncology.
 
 
Target volume shape variation during irradiation of rectal cancer patients in supine position: Comparison with prone position.
 
To quantify the inter-fraction shape variation of the mesorectum for rectal cancer patients treated with 5×5Gy in supine position and compare it to variation in prone position. [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: Radiotherapy and Oncology.
 
 
Is a single arc sufficient in volumetric-modulated arc therapy (VMAT) for complex-shaped target volumes?
 
To compare step-and-shoot intensity-modulated radiotherapy (ss-IMRT) with volumetric-modulated arc therapy (VMAT) for complex-shaped target volumes with a simultaneous integrated boost (SIB). [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: Radiotherapy and Oncology.
 
 
MRI before and after external beam intensity-modulated radiotherapy of patients with prostate cancer: The feasibility of monitoring...
 
"To identify and quantify suitable pharmacokinetic MRI parameters for monitoring tissue changes after external beam intensity-modulated radiotherapy of prostate cancer. " [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: Radiotherapy and Oncology.
 
 
18F-fluorocholine PET-guided target volume delineation techniques for partial prostate re-irradiation in local recurrent prostate cancer.
 
We evaluate the contribution of 18F-choline PET/CT in the delineation of gross tumour volume (GTV) in local recurrent prostate cancer after initial irradiation using various PET image segmentation techniques. [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: Radiotherapy and Oncology.
 
 
Volumetric modulated arc therapy (VMAT) vs. serial tomotherapy, step-and-shoot IMRT and 3D-conformal RT for treatment of prostate cancer.
 
Volumetric modulated arc therapy (VMAT), a complex treatment strategy for intensity-modulated radiation therapy, may increase treatment efficiency and has recently been established clinically. This analysis compares VMAT against established IMRT and 3D-conformal radiation therapy (3D-CRT) delivery techniques. [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: Radiotherapy & Oncology.
 
 
AAPM recommendations on dose prescription and reporting methods for permanent interstitial brachytherapy for prostate cancer: Report of Task Group 137
 
During the past decade, permanent radioactive source implantation of the prostate has become the standard of care for selected prostate cancer patients, and the techniques for implantation have evolved in many different forms. [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: AAPM.
 
 
A dosimetric comparison of four treatment planning methods for high grade glioma.
 
High grade gliomas (HGG) are typically treated with a combination of surgery, radiotherapy and chemotherapy. Three dimensional (3D) conformal radiotherapy treatment planning is still the main stay of treatment for these patients. [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Radiation Oncology.
 
 
Modeling set-up error by daily MVCT for prostate adjuvant treatment delivered in 20 fractions: Implications for the assessment of the optimal...
 
To optimise image-guided radiotherapy (IGRT) approaches in set-up error correction for hypofractionated adjuvant treatment of prostate cancer using helical tomotherapy (HT). [+ leia mais]
Colaborador: Camila Pessoa de Sales e Laura Natal Rodrigues.
Fonte: Radiotherapy & Oncology.
 
 
Longitudinal study using a diode phantom for helical tomotherapy IMRT QA.
 
The Caribbean Radiation Oncology Center acquired a DELTA4® diode phantom for helical tomotherapy IMRT QA and presents the results of their first 264 clinical cases. [+ leia mais]
Fonte: Medical Physics.
 
 
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