International journal of radiation oncology, biology, physics
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Int. J. Radiat. Oncol. Biol. Phys. · Feb 2010
Dosimetric factors associated with long-term dysphagia after definitive radiotherapy for squamous cell carcinoma of the head and neck.
Intensification of radiotherapy and chemotherapy for head-and-neck cancer may lead to increased rates of dysphagia. Dosimetric predictors of objective findings of long-term dysphagia were sought. ⋯ Doses to the larynx and pharyngeal constrictors predicted long-term swallowing complications, even when controlled for other clinical factors. The addition of these structures to intensity-modulated radiotherapy optimization may reduce the incidence of dysphagia, although cautious clinical validation is necessary.
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Int. J. Radiat. Oncol. Biol. Phys. · Feb 2010
Randomized Controlled TrialA prospective randomized trial to study the impact of pretreatment FDG-PET for cervical cancer patients with MRI-detected positive pelvic but negative para-aortic lymphadenopathy.
This prospective randomized study was undertaken to determine the possible impact of 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) on extrapelvic metastasis detection, radiation field design, and survival outcome for cervical cancer patients with enlarged pelvic nodes on MRI image. ⋯ Pretreatment FDG-PET in conjunction with magnetic resonance imaging can improve the detection of extrapelvic metastasis, mainly PALN, and help select patients for extended-field radiotherapy. However, the addition of FDG-PET may not translate into survival benefit, even though PALN relapses are reduced.
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Int. J. Radiat. Oncol. Biol. Phys. · Feb 2010
Factors associated with neurological recovery of brainstem function following postoperative conformal radiation therapy for infratentorial ependymoma.
To identify risk factors associated with incomplete neurological recovery in pediatric patients with infratentorial ependymoma treated with postoperative conformal radiation therapy (CRT). ⋯ Incomplete recovery of brainstem function after CRT for infratentorial ependymoma is related to surgical morbidity and the volume and the extent of tumor.
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Int. J. Radiat. Oncol. Biol. Phys. · Feb 2010
Gamma knife radiosurgery as a therapeutic strategy for intracranial sarcomatous metastases.
To determine the indication and outcomes for Gamma Knife stereotactic radiosurgery (GKSRS) in the care of patients with intracranial sarcomatous metastases. ⋯ Gamma Knife radiosurgery was a well-tolerated and initially effective therapy in the management of patients with sarcomatous intracranial metastases. However, many patients, including those who also received fractionated whole-brain radiotherapy, developed progressive new brain disease.
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Int. J. Radiat. Oncol. Biol. Phys. · Feb 2010
Local control following permanent prostate brachytherapy: effect of high biologically effective dose on biopsy results and oncologic outcomes.
To determine factors that influence local control and systemic relapse in patients undergoing permanent prostate brachytherapy (PPB). ⋯ Higher radiation doses are required to achieve local control following PPB. A BED of >200 Gy with an alpha/beta ratio of 2 yields 96.9% local control rate. Failure to establish local control impacts survival.