نتایج جستجو برای: stereotactic radiation
تعداد نتایج: 245655 فیلتر نتایج به سال:
Pineal parenchymal tumors are rare. Of the three types of pineal parenchymal tumors, pineocytomas are the least aggressive and are not known to diffusely disseminate. In this paper, we report the successful treatment of a case of pineocytoma with diffuse leptomeningeal relapse following initial stereotactic radiotherapy. A 39-year-old female presented with headaches, balance impairment, urinary...
BACKGROUND An evaluation of the treatment results for 104 patients with 121 paragangliomas of the temporal bone, carotid body, and/or glomus vagale who were treated with radiation therapy (RT) at the University of Florida between 1968 and 2004. METHODS Eighty-nine paragangliomas (86%) were treated with conventional megavoltage techniques, 15 (14%) patients with stereotactic fractionated radia...
BACKGROUND Despite the advancement of microsurgical and endoscopic techniques, some nonfunctioning pituitary adenomas (NFPAs) can be difficult to cure. Tumor recurrence or incomplete resection may occur in some patients with NFPAs, and management strategies for these NFPAs remain unclear. OBJECTIVE To review the existing literature as it pertains to the management of postsurgical residual or ...
Stereotactic body radiation therapy (SBRT) is a newly developed technique currently in clinical use. SBRT originated from stereotactic radiosurgery for intracranial tumors. SBRT has been widely used clinically for lung cancer. The practice of SBRT demands different kinds of patient fixation, breathing control, target determination, treatment planning, and verifications. The history and current ...
Stereotactic radiosurgery (SRS) has been an effective modality for the treatment of benign and malignant cranial disease for over 50 years. Just as SRS revolutionized the practice of neurosurgery, stereotactic ablative radiotherapy (SAbR) in extracranial sites is now challenging conventional wisdom with regard to the practice of radiation oncology. This clinical paradigm change has been enabled...
INTRODUCTION Post-stereotactic radiation-induced neoplasms, although relatively rare, have raised the question of benefit regarding CyberKnife® treatments versus the risk of a secondary malignancy. The incidence of such neoplasms arising in the nervous system is thought to be low, given the paucity of case reports regarding such secondary lesions. CASE PRESENTATION Here we describe a case of ...
1Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, Texas; 2Department of Radiation Oncology, University of Michigan Health System, Ann Arbor, Michigan; 3Department of Radiation Oncology, University of Virginia Health System, Charlottesville, Virginia; 4Department of Radiation Oncology, University of Colorado, Denver, Aurora, Colorado; 5Department of Radi...
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). The task group report includes a review of the literature to identify reported clinical findings and expected outcomes for this treatmen...
BACKGROUND The delivery of a simultaneous integrated boost to the intra-prostatic tumour nodule may improve local control. The ability to deliver such treatments with hypofractionated SBRT was attempted using RapidArc (Varian Medical systems, Palo Alto, CA) and Multiplan (Accuray inc, Sunnyvale, CA). MATERIALS AND METHODS 15 patients with dominant prostate nodules had RapidArc and Multiplan p...
Brain metastasis represents one of the most common causes of intracranial tumors in adults, and the incidence of brain metastasis continues to rise due to the increasing survival of cancer patients. Yet, the development of cystic brain metastasis remains a relatively rare occurrence. In this review, we describe the characteristics of cystic brain metastasis and evaluate the combined use of ster...
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