Respiration correlated cone-beam computed tomography and 4DCT for evaluating target motion in Stereotactic Lung Radiation Therapy
نویسندگان
چکیده
منابع مشابه
Liver motion during cone beam computed tomography guided stereotactic body radiation therapy.
PURPOSE Understanding motion characteristics of liver such as, interfractional and intrafractional motion variability, difference in motion within different locations in the organ, and their complex relationship with the breathing cycles are particularly important for image-guided liver SBRT. The purpose of this study was to investigate such motion characteristics based on fiducial markers trac...
متن کاملRegistration uncertainties between 3D cone beam computed tomography and different reference CT datasets in lung stereotactic body radiation therapy
BACKGROUND The aim of this study was to analyze differences in couch shifts (setup errors) resulting from image registration of different CT datasets with free breathing cone beam CTs (FB-CBCT). As well automatic as manual image registrations were performed and registration results were correlated to tumor characteristics. METHODS FB-CBCT image registration was performed for 49 patients with ...
متن کاملImaging dose from cone beam computed tomography in radiation therapy.
Imaging dose in radiation therapy has traditionally been ignored due to its low magnitude and frequency in comparison to therapeutic dose used to treat patients. The advent of modern, volumetric, imaging modalities, often as an integral part of linear accelerators, has facilitated the implementation of image-guided radiation therapy (IGRT), which is often accomplished by daily imaging of patien...
متن کاملAccuracy of Image Guidance Using Free-Breathing Cone-Beam Computed Tomography for Stereotactic Lung Radiotherapy
Movement of the target object during cone-beam computed tomography (CBCT) leads to motion blurring artifacts. The accuracy of manual image matching in image-guided radiotherapy depends on the image quality. We aimed to assess the accuracy of target position localization using free-breathing CBCT during stereotactic lung radiotherapy. The Vero4DRT linear accelerator device was used for the exami...
متن کاملEvaluating the Distance between Posterior Teeth and the Maxillary Sinus Floor Using Cone Beam Computed Tomography
Background and Objectives The topography of the sinus floor and its relationship with maxillary teeth roots varies with age, pneumatization size and grade, positioning of the teeth, and Genetics. This study used cone beam computed tomography (CBCT) to evaluate the distance between posterior teeth and the maxillary sinus floor in patients in Rafsanjan City, Iran. Materials and Methods This de...
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ژورنال
عنوان ژورنال: Acta Oncologica
سال: 2006
ISSN: 0284-186X,1651-226X
DOI: 10.1080/02841860600907345