Dosimetric Correction for a Six Degrees Carbon Fiber Couch
نویسندگان
چکیده
منابع مشابه
[Dose impact of a carbon fiber couch for stereotactic body radiation therapy of lung tumors].
The aim of this study was to measure the dose attenuation caused by a carbon fiber radiation therapy table (Imaging Couch Top; ICT, BrainLab) and to evaluate the dosimetric impact of ICT during stereotactic body radiation therapy (SBRT) in lung tumors. The dose attenuation of ICT was measured using an ionization chamber and modeled by means of a treatment planning system (TPS). SBRT was planned...
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Introduction: Heterogeneity correction is an important parameter in dose calculation for cancer patients where it may be cause inaccuracy in dose calculation as a result of different densities of patients. This study studied the impact of dose calculation of breast cancer patients with and without heterogeneity correction. Material and Methods: Twenty breast cancer patients were treated with Th...
متن کاملImpact of radiation attenuation by a carbon fiber couch on patient dose verification
The aim of this study was to understand the difference between the measured and calculated irradiation attenuations obtained using two algorithms and to identify the influence of couch attenuation on patient dose verification. We performed eight tests of couch attenuation with two photon energies, two longitudinal couch positions, and two rail positions. The couch attenuation was determined usi...
متن کاملComparison of the Motion Accuracy of a Six Degrees of Freedom Radiotherapy Couch with and without Weights
In this study, we compared the motion accuracy of six degrees of freedom (6D) couch for precision radiotherapy with or without weights attached to the couch. Two digital cameras were focused on the iso-center of a linear accelerator. Images of a needle which had been fixed to the 6D couch were obtained using the cameras when the couch moved in translation and rotation around each axis. The thre...
متن کاملDosimetric evaluation of a "virtual" image-guidance alternative to explicit 6 degree of freedom robotic couch correction.
PURPOSE Clinical evaluation of a "virtual" methodology for providing 6 degrees of freedom (6DOF) patient set-up corrections and comparison to corrections facilitated by a 6DOF robotic couch. METHODS A total of 55 weekly in-room image-guidance computed tomographic (CT) scans were acquired using a CT-on-rails for 11 pelvic and head and neck cancer patients treated at our facility. Fusion of the...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 2011
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.67.1592