PURPOSE: The advent of image-guided radiation therapy has led to dramatic improvements in the accuracy of treatment delivery in radiotherapy. Such advancements have highlighted the deleterious impact tumor motion can ...
Kim, JH; Nguyen, DT; Huang, CY; Fuangrod, T; Caillet, V; O'Brien, R; Poulsen, P; Booth, J; Keall, P
Target rotation can considerably impact the delivered radiotherapy dose depending on the tumour shape. More accurate tumour pose during radiotherapy treatment can be acquired through tracking in 6 degrees-of-freedom (6 ...
Lee, D; Greer, PB; Ludbrook, J; Arm, J; Hunter, P; Pollock, S; Makhija, K; O'Brien, RT; Kim, T; Keall, P
PURPOSE: To assess the impact of an audiovisual (AV) biofeedback on intra- and interfraction tumor motion for lung cancer patients. METHODS AND MATERIALS: Lung tumor motion was investigated in 9 lung cancer patients who ...
Cooper, BJ; O'Brien, RT; Kipritidis, J; Shieh, CC; Keall, P
Respiratory triggered four dimensional cone-beam computed tomography (RT 4D CBCT) is a novel technique that uses a patient's respiratory signal to drive the image acquisition with the goal of imaging dose reduction without ...
Kim, T; Kim, S; Park, YK; Youn, KK; Keall, P; Lee, R
A dual quasi-breath-hold (DQBH) technique is proposed for respiratory motion management (a hybrid technique combining breathing-guidance with breath-hold task in the middle). The aim of this study is to test a hypothesis ...
Huang, CY; Tehrani, JN; Ng, JA; Booth, J; Keall, P
PURPOSE: Tumor positional uncertainty has been identified as a major issue that deteriorates the efficacy of radiation therapy. Tumor rotational movement, which is not well understood, can result in significant geometric ...
This study evaluated if an audiovisual (AV) biofeedback causes variation in the level of external and internal correlation due to its interactive intervention in natural breathing. The internal (diaphragm) and external ...
Garau, N; Via, R; Meschini, G; Lee, D; Keall, P; Riboldi, M; Baroni, G; Paganelli, C
In-room magnetic resonance imaging (MRI) allows the acquisition of fast 2D cine-MRI centered in the tumor for advanced motion management in radiotherapy. To achieve 3D information during treatment, patient-specific motion ...
PURPOSE: Multileaf collimator (MLC) tracking is being clinically pioneered to continuously compensate for thoracic and pelvic motion during radiotherapy. The purpose of this work was to characterize the performance of two ...
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