نتایج جستجو برای: radiotherapy treatment planning
تعداد نتایج: 1609874 فیلتر نتایج به سال:
Introduction:Radiotherapy (RT) plays an important role in treatment of head and neck cancers. In almost 75% of patients with head and neck cancers, RT as the main treatment method is used in order to radical or palliative treatment. Hearing loss is one of the side effects of RT for patients whose inner ear is included in radiation field. The aim of this study was to evaluate th...
INTRODUCTION Glomus tumors are benign, slow growing tumors originating from paraganglionic tissue, mostly located at the carotid bifurcation, jugular foramen, cervical portion vagus nerve, and middle ear cavity. Radiotherapy is treatment of choice for patients with intracranial extension, and patients with bilateral and multiple tumors, or patients who are inoperable. CASE PRESENTATION We pre...
INTRODUCTION In radiotherapy, a team of highly specialised professionals co-operate in planning and delivery of treatment and are responsible for the effectiveness and safety of the service. The aim of this article was to present the necessity and features of a quality assurance (QA) program in radiotherapy through literature review. METHODS A search was carried out in Scirus, Medline/ PubMed...
Accurate image registration for CT-CT, CT-MRI for brain is necessary to obtain clinical information from diagnostic images and translate the information to radiotherapy treatment planning CT images. Mostly in cases of Post-Surgery cases that have been operated outside hospitals and are being referred for Post-Operative adjuvant Radiotherapy to our Centre, where the pre-operative volume is very ...
Deep learning (DL) models are increasingly studied to automate the process of radiotherapy treatment planning. This study evaluates clinical use such a model for whole breast radiotherapy. Treatment plans were automatically generated, after which planners allowed manually adapt them. Plans evaluated based on goals and DVH parameters. Thirty-seven 50plans did fulfill all without adjustments. Thi...
TRiP98 is a treatment planning program for radiotherapy with scanned ion beams. It was developed at GSI and has been successfully used in clinical routine from 1997-2008 for over 400 patients, predominantly with head and neck tumors [1,2]. The treatment of tumors within moving organs, such as lung tumors, with scanned ion beams involves additional complexity of the beam delivery and the treatme...
Radiotherapy is an important treatment modality for 40-50% of children with cancer. There is concern about late effects, particularly the neuropsychological effects of CNS irradiation, and orthopaedic effects. It is important to administer the highest standard of radiotherapy, incorporating departmental quality assurance. Meticulous planning is essential to achieve local tumour control with the...
Objective: RapidArc (Varian Medical Systems, Palo Alto, CA) is a new volumetric-modulated arc radiotherapy technique with continuous modulation of gantry speed, dose rate, and multileaf collimator shape. Taking advantages of dose painting capabilities along with rotational delivery, RapidArc has shown promise in the treatment of a wide range of tumours, including intracranial, head and neck, pr...
BACKGROUND AND PURPOSE The Medical Physics Division of the Portuguese Physics Society (DFM_SPF) in collaboration with the IAEA, carried out a national auditing project in radiotherapy, between September 2011 and April 2012. The objective of this audit was to ensure the optimal usage of treatment planning systems. The national results are presented in this paper. MATERIAL AND METHODS The audit...
Abstract Radiotherapy is an important cancer treatment: in patients who are cured of cancer, radiotherapy contributes to cure around 40% cases. also has role improving symptoms individuals with incurable cancer. Whereas palliative typically given over 1–10 treatments, radical treatments can extend 4–8 weeks. Radiation often delivered externally by machines called linear accelerators. I...
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