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OBJECTIVES To determine whether patients who have used a Scottish district general hospital would prefer single or shared accommodation on a future admission. METHODS We surveyed 80 in-patients in January 2008 in order to obtain 20 medical and 20 surgical patients in single rooms and the same number in shared accommodation. Each patient received a seven(More)
PURPOSE Developing a compact collimator system and validating a 3D surface imaging module for a scanning beam low-energy x-ray radiation therapy (SBIORT) system that enables delivery of non-uniform radiation dose to targets with irregular shapes intraoperatively. METHODS SBIORT consists of a low energy x-ray source, a custom compact collimator module, a(More)
PURPOSE To introduce a feasible interstitial rotating shield brachytherapy (I-RSBT) system for treating prostate cancer. With I-RSBT, the radiation sources are surrounded by catheters that contain shields to enable conformal avoidance of healthy tissues, potentially reducing complications relative to conventional high-dose-rate brachytherapy (HDR-BT)(More)
PURPOSE To introduce a novel multi-source rotating shield brachytherapy (RSBT) apparatus for the precise simultaneous angular and linear positioning of all partially-shielded 153Gd radiation sources in interstitial needles for treating prostate cancer. The mechanism is designed to lower the detrimental dose to healthy tissues, the urethra in particular,(More)
PURPOSE In this work a general method is presented that enables clinicians to rapidly select Rotating shield brachytherapy (RSBT) emission angles based on the patient-specific tradeoff between delivery time and tumor dose conformity. Cervical cancer cases are used as examples. METHODS Anchor plans with high dose conformity but infeasible delivery times(More)
PURPOSE To develop a volumetric modulated arc therapy (VMAT) planning and delivery methodology for lung stereotactic body radiation therapy (SBRT) that addresses the unique geometric challenges presented when using an Elekta VersaHD linear accelerator. METHODS The Elekta VersaHD imaging panels are fixed at 160cm SID when deployed, limiting the ability to(More)
Radiotherapy is in the era of image guided radiation therapy (IGRT) in which imaging procedures are routinely performed for patient positioning, and target localization. The additional imaging dose delivered may increase risk to the patient and therefore needs to be managed. This lecture provides an overview of the AAPM TG-180 which is charged with:(More)
Since July of 2005, the University of Iowa has been using a conventional linear accelerator with the flattening filter removed. This presentation will focus on the factors affecting the dosimetric accuracy and total delivery time reduction found clinically of radiation therapy with an unfiattened beam, focusing on standard fractionation IMRT of the head and(More)
PURPOSE There has been a growing interest in applying collimation to pencil beam scanning (PBS) proton therapy in order to sharpen the lateral dose falloff out of the target, especially at low energies. Currently, there is not a method to optimally determine the collimation position or margin around the target. A uniform margin would not be ideal due to the(More)