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Magnetic resonance (MR) images often provide superior anatomic and functional information over computed tomography (CT) images, but generally are not used alone without CT images for radiotherapy treatment planning and image guidance. This study aims to investigate the potential of probabilistic classification of voxels from multiple MRI contrasts to(More)
demonstrate the sensitivity and specificity of claims-based algorithms to detect important radiotherapy outcomes and exposures across disease sites. Second, equipment manufacturers should develop unique technology identifiers for radiotherapy devices and image guidance that would facilitate identification in registries or possibly claims data. For example,(More)
Accurate separation of air and bone is critical for creating synthetic CT from MRI to support Radiation Oncology workflow. This study compares two different ultrashort echo-time sequences in the separation of air from bone, and evaluates post-processing methods that correct intensity nonuniformity of images and account for intensity gradients at tissue(More)
PURPOSE To introduce a method to efficiently identify and calculate meaningful tradeoffs between criteria in an interactive IMRT treatment planning procedure. The method provides a systematic approach to developing high-quality radiation therapy treatment plans. METHODS Treatment planners consider numerous dosimetric criteria of varying importance that,(More)
The problem of identifying and repairing data errors has been an area of persistent focus in data management research. However, while traditional data cleaning techniques can be effective at identifying several data discrepancies, they disregard the fact that many errors are systematic, inherent to the process that produces the data, and thus will keep(More)
PURPOSE Subject-specific susceptibility-induced B0 inhomogeneity affects the geometric accuracy of MRI images, with potential impact on the accuracy of treatment planning and image guidance. This study quantifies individual distortions for patients with intrahepatic tumors. METHODS Liver MRI scans of 13 patients who were enrolled in an IRB approved study(More)
Quantitative hepatic perfusion parameters derived by fitting dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) of liver to a pharmacokinetic model are prone to errors if the dynamic images are not corrected for respiratory motion by image registration. The contrast-induced intensity variations in pre- and postcontrast phases pose challenges(More)
The rarity of bone and soft tissue sarcoma, the difficulty in interpretation of imaging and histology, the plethora of treatment modalities, and the complexity and intensity of the treatment contribute to the need for systematic multidisciplinary team management of patients with these diseases. An integrated multidisciplinary clinic and team with a(More)
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