PO-0775: Can daily image guidance be avoided for Helical Tomotherapy in head and neck cancers? A prospective validation study
نویسندگان
چکیده
منابع مشابه
Fast Helical Tomotherapy in a head and neck cancer planning study: is time priceless?
BACKGROUND The last few years, in radiotherapy there has been a growing focus on speed of treatment delivery (largely driven by economical and commercial interests). This study investigates the influence of treatment time on plan quality for helical tomotherapy (HT), using delivery times with Volumetric Modulated Arc Therapy (VMAT; Rapid Arc [RA]) as reference. METHODS In a previous study, do...
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Introduction: Causes of head and neck cancers (HNCs) are multifactorial, and few studies have investigated the association between chemical exposure and HNCs. The objective of this study was to investigate associations between HNCs, agricultural occupations, and pesticide exposure. The potential for the accumulation of pesticides in the adipose tissue of patients was also investigated. Materi...
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Introduction: Esophagitis is one of the main causes of swallowing dysfunction after radiation therapy (RT) for head and neck cancer (HNC).It significantly affects patients’ quality of life as well as having a potentially negative impact on their long term survival. However, little has been investigated on the dose-response and normal tissue complication probability (NTCP) of es...
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Head and neck cancers that are associated with high-risk factors have a poor prognosis. In such patients, post-operative radiochemotherapy is mandatory. The present study describes the case of a 71-year-old high-risk head and neck cancer patient who was not able to tolerate the supine position for the radiotherapy setup. A lateral immobilization with a head mask and a vacuum cushion was perform...
متن کاملIs daily computed tomography image guidance necessary for nasal cavity and nasopharyngeal radiotherapy? An investigation based on helical tomotherapy
To analyze the magnitude of setup errors corrected by helical tomotherapy megavoltage computed tomography (MVCT) on a daily or weekly basis and the impact of those corrections on the delivered dose to the tumor and organs at risk (OARs), we retrospectively analyzed the setup errors for 6 nasal cavity and 4 nasopharyngeal cancer patients treated with helical tomotherapy for 25 – 33 fractions. Ea...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2015
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(15)40767-4