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ABFM NEWS - Radioterapia
 
Correlation of dose–volume parameters, endoscopic and clinical rectal side effects in cervix cancer patients treated with definitive radiotherapy...
 
"Correlation of dosimetric parameters for MRI-based 3D treatment planning with rectoscopic findings and clinical rectal side effects. " [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Radiotherapy & Oncology.
 
 
Potential of image-guidance, gating and real-time tracking to improve accuracy in pulmonary stereotactic body radiotherapy.
 
To evaluate the potential of image-guidance, gating and real-time tumor tracking to improve accuracy in pulmonary stereotactic body radiotherapy (SBRT). [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Radiotherapy & Oncology.
 
 
Investigation of Helical Tomotherapy for Partial-Breast Irradiation of Prone-Positioned Patients.
 
To investigate whether helical tomotherapy can provide conformal, uniform target-dose coverage for partial-breast irradiation (PBI) of patients positioned prone while achieving organ-at-risk sparing compliant with National Surgical Adjuvant Breast and Bowel Project (NSABP) B-39/Radiation Therapy Oncology Group (RTOG) 0413 guidelines; and to report our initial experience with the delivery of prone-breast PBI treatments using tomotherapy. [+ leia mais]
Fonte: Int J Radiat Oncol Biol Phys.
 
 
Secondary Neutron Doses for Several Beam Configurations for Proton Therapy.
 
To compare possible neutron doses produced in scanning and scattering modes, with the latter assessed using a newly built passive-scattering proton beam line. [+ leia mais]
Fonte: Int J Radiat Oncol Biol Phys.
 
 
Exclusive MRI-based tandem and colpostats reconstruction in gynaecological brachytherapy treatment planning.
 
According to the GYN GEC-ESTRO Recommendations, MRI is needed with the modality of T2 weighted. CT-MR compatible tandem plus colpostats (T/C) (Nucletron) is widely used in cervical brachytherapy. The major challenge of MRI is the lack of dummy catheters. [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Radiotherapy & Oncology.
 
 
Dosimetric comparison of three different treatment techniques in extensive scalp lesion irradiation.
 
This study compared lateral photon/electron plan (3DCRT), intensity modulated radiation therapy (IMRT) plan, and high dose rate (HDR) brachytherapy plan for total scalp irradiation. [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Radiotherapy & Oncology.
 
 
Comparison of online IGRT techniques for prostate IMRT treatment: Adaptive vs repositioning correction.
 
This study compares three online image guidance techniques (IGRT) for prostate IMRT treatment: bony-anatomy matching, soft-tissue matching, and online replanning. Six prostate IMRT patients were studied. [+ leia mais]
Fonte: Medical Physics.
 
 
Dose escalation with high-dose 3D-conformal radiotherapy (HD-3D-CRT) or low-dose 3D-conformal radiotherapy plus HDR brachytherapy (LD-3D-CRT + HDR-B).
 
Pages 105-106. [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Brachytherapy.
 
 
Decline of dose coverage between intraoperative planning and post implant dosimetry for I-125 permanent prostate brachytherapy...
 
In permanent prostate brachytherapy the dose distributions 4 weeks post implant differ from the intraoperative dose distributions. The purpose of this study is to compare intraoperative planning and post implant dosimetry for loose and stranded seed implants. [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Radiotherapy & Oncology.
 
 
Limited Advantages of Intensity-Modulated Radiotherapy Over 3D Conformal Radiation Therapy in the Adjuvant Management of Gastric Cancer.
 
Although chemoradiotherapy was considered the standard adjuvant treatment for gastric cancer, a recent Phase III trial (Medical Research Council Adjuvant Gastric Infusional Chemotherapy [MAGIC]) did not include radiotherapy in the randomization scheme because it was considered expendable. [+ leia mais]
Fonte: Int J Radiat Oncol Biol Phys.
 
 
Dose Recalculation and the Dose-Guided Radiation Therapy (DGRT) Process Using Megavoltage Cone-Beam CT.
 
At the University of California San Francisco, daily or weekly three-dimensional images of patients in treatment position are acquired for image-guided radiation therapy. These images can be used for calculating the actual dose delivered to the patient during treatment. [+ leia mais]
Fonte: Int J Radiat Oncol Biol Phys.
 
 
Dedicated Magnetic Resonance Imaging in the Radiotherapy Clinic.
 
To introduce a novel technology arrangement in an integrated environment and outline the logistics model needed to incorporate dedicated magnetic resonance (MR) imaging in the radiotherapy workflow. [+ leia mais]
Fonte: Int J Radiat Oncol Biol Phys.
 
 
Tumour necrosis factor and cancer.
 
Tumour necrosis factor (TNF) is a major inflammatory cytokine that was first identified for its ability to induce rapid haemorrhagic necrosis of experimental cancers. When efforts to harness this anti-tumour activity in cancer treatments were underway, a paradoxical tumour-promoting role of TNF became apparent. Now that links between inflammation and cancer are appreciated, is TNF a target or a therapeutic in malignant disease — or both? [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Nature Reviews Cancer.
 
 
Electron beam quality control using an amorphous silicon EPID.
 
An amorphous silicon EPID has been investigated to determine whether it is capable of quality control constancy measurements for linear accelerator electron beams. The EPID grayscale response was found to be extremely linear with dose over a wide dose range and, more specifically, for exposures of 95–100 MU. [+ leia mais]
Fonte: Medical Physics.
 
 
Neutron dose study with bubble detectors aboard the International Space Station as part of the Matroshka-R experiment.
 
As part of the Matroshka-R experiments, a spherical phantom and space bubble detectors (SBDs) were used on board the International Space Station to characterise the neutron radiation field. Seven experimental sessions with SBDs were carried out during expeditions ISS-13, ISS-14 and ISS-15. [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Radiation Protection Dosimetry.
 
 
Potentials of on-line repositioning based on implanted fiducial markers and electronic portal imaging in prostate cancer radiotherapy.
 
To evaluate the benefit of an on-line correction protocol based on implanted markers and weekly portal imaging in external beam radiotherapy of prostate cancer. To compare the use of bony anatomy versus implanted markers for calculation of setup-error plus/minus prostate movement. [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Radiation Oncology.
 
 
Late chest wall toxicity after MammoSite® breast brachytherapy.
 
Accelerated partial breast irradiation (APBI) with the MammoSite® breast brachytherapy (MBB) system is being investigated as an alternative to whole breast radiation in breast conservation therapy (BCT) at multiple centers worldwide. [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Brachytherapy.
 
 
Incident Involving Co-60 Gamma Knife During Patient Treatment.
 
During a patient treatment, the couch moved out of treatment position. The emergency stop button was activated and the system did not respond. The licensee|s staff had to manually pull out the couch from the Gamma Knife and manually close the doors to the Gamma Knife to shield the source. [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: US NRC.
 
 
Intensity-Modulated Radiotherapy Reduces Radiation-Induced Morbidity and Improves Health-Related Quality of Life: Results...
 
The purpose of this study was to compare intensity-modulated radiation therapy (IMRT) and three-dimensional conventional radiotherapy (3D-CRT) with regard to patient-rated xerostomia, Radiation Therapy Oncology Group (RTOG) acute and late xerostomia and health-related quality of life (HRQoL) among patients with head and neck squamous cell carcinoma (HNSCC). [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: Int J Radiat Oncol Biol Phys.
 
 
Reirradiation May Extend Life in Head and Neck Cancers.
 
For some patients, reirradiation of recurrent head and neck cancer can extend life. But for those with comorbidities or organ dysfunction, such as feeding tube dependence, it is likely to offer only palliative support, according to a report in the March 16 issue of the Journal of Clinical Oncology. [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: Modern Medicine.
 
 
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