Is the Liver a Static Organ: Intraorgan Deformation Quantified Through Fiducial Displacement on 4DCT
نویسندگان
چکیده
منابع مشابه
Respiration-Induced Intraorgan Deformation of the Liver: Implications for Treatment Planning in Patients Treated With Fiducial Tracking
Stereotactic body radiation therapy is a well-tolerated modality for the treatment of primary and metastatic liver lesions, and fiducials are often used as surrogates for tumor tracking during treatment. We evaluated respiratory-induced liver deformation by measuring the rigidity of the fiducial configuration during the breathing cycle. Seventeen patients, with 18 distinct treatment courses, we...
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Texture mapping, bumpmapping, and displacement maps are central instruments in computer graphics aiming to achieve photo-realistic renderings. In all these techniques, the mapping is typically oneto-one and a single surface location is assigned a single texture color, normal, or displacement. Other specialized techniques have also been developed for the rendering of supplementary surface detail...
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addresses the question: what is the best fiducial? A set of criteria that are desirable in an optically tracked fiducial are presented and a new fiducial image set is designed that meets these criteria. The images in this set utilize a square black-border pattern with a 15% border width and an interior image that supports orientation determination and unique identification. The interior image i...
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چکیده ندارد.
15 صفحه اولTissue characterization using a phantom to validate four-dimensional tissue deformation.
PURPOSE This project proposes using a real tissue phantom for 4D tissue deformation reconstruction (4DTDR) and 4D deformable image registration (DIR) validation, which allows for the complete verification of the motion path rather than limited end-point to end-point of motion. METHODS Three electro-magnetic-tracking (EMT) fiducials were implanted into fresh porcine liver that was subsequently...
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ژورنال
عنوان ژورنال: International Journal of Radiation Oncology*Biology*Physics
سال: 2015
ISSN: 0360-3016
DOI: 10.1016/j.ijrobp.2015.07.2120