[I008] Systematic evaluation of lung-tumor motion using four-dimensional computed tomography
نویسندگان
چکیده
منابع مشابه
Determination of patient-specific internal gross tumor volumes for lung cancer using four-dimensional computed tomography
BACKGROUND To determine the optimal approach to delineating patient-specific internal gross target volumes (IGTV) from four-dimensional (4-D) computed tomography (CT) image data sets used in the planning of radiation treatment for lung cancers. METHODS We analyzed 4D-CT image data sets of 27 consecutive patients with non-small-cell lung cancer (stage I: 17, stage III: 10). The IGTV, defined t...
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Motion artifacts appear in four-dimensional computed tomography (4DCT) images because of suboptimal acquisition parameters or patient breathing irregularities. Frequency of motion artifacts is high and they may introduce errors in radiation therapy treatment planning. Motion artifact detection can be useful for image quality assessment and 4D reconstruction improvement but manual detection in m...
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PURPOSE/OBJECTIVE(S) High-risk neuroblastoma (HR-NBL) requires multimodality treatment, including external beam radiation of the primary tumor site following resection. Radiotherapy planning must take into account motion of the target and adjacent normal anatomy, both of which are poorly understood in the pediatric population, and which may differ significantly from those in adults. METHODS/M...
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متن کاملInitial evaluation of a four‐dimensional computed tomography system, using a programmable motor
A dynamic lung tumor phantom was used to investigate the geometric reconstruction accuracy of a commercial four-dimensional computed tomography (4D-CT) system. A ball filled with resin, embedded in a cork cube, was placed on a moving platform. Various realistic antero-posterior (AP) motions were programmed to reproduce the respiratory motion of a lung tumor. Several three-dimensional (3D) CT an...
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ژورنال
عنوان ژورنال: Physica Medica
سال: 2018
ISSN: 1120-1797
DOI: 10.1016/j.ejmp.2018.06.080