نتایج جستجو برای: mri radiotherapy
تعداد نتایج: 165847 فیلتر نتایج به سال:
BACKGROUND In order to benefit from the highly conformal irradiation of tumors in ion radiotherapy, sophisticated treatment planning and simulation are required. The purpose of this study was to investigate the potential of MRI for ion radiotherapy treatment plan simulation and adaptation using a classification-based approach. METHODS Firstly, a voxelwise tissue classification was applied to ...
Objective—To consider the relation between functional experiential hallucinosis and brain injury induced by radiotherapy. Methods—Single case report. Results—A female patient presented with a four year history of functional experiential hallucinosis after two courses of radiotherapy for nasopharyngeal carcinoma. Brain MRI showed hyperintense changes over the left temporal lobe. Conclusion— It i...
OBJECTIVE To consider the relation between functional experiential hallucinosis and brain injury induced by radiotherapy. METHODS Single case report. RESULTS A female patient presented with a four year history of functional experiential hallucinosis after two courses of radiotherapy for nasopharyngeal carcinoma. Brain MRI showed hyperintense changes over the left temporal lobe. CONCLUSION...
The integration of 1.5 T MRI functionality with a radiotherapy linear accelerator (linac) has been pursued since 1999 by the UMC Utrecht in close collaboration with Elekta and Philips. The idea behind this integrated device is to offer unrivalled, online and real-time, soft-tissue visualization of the tumour and the surroundings for more precise radiation delivery. The proof of concept of this ...
Abstract Background The recently developed biomimetic strategy is one of the mostly effective strategies for improving theranostic efficacy diverse nanomedicines, because nanoparticles coated with cell membranes can disguise as “self”, evade surveillance immune system, and accumulate to tumor sites actively. Results Herein, we utilized mesenchymal stem memabranes (MSCs) coat polymethacrylic aci...
Introduction: MRI is being integrated into the radiotherapy treatment planning process for prostate cancer in the hopes of improved therapeutic ratio. Dynamic contrast enhanced MRI (DCEMRI) performed during radiotherapy has been shown to be predictive of patient outcome for cervix cancer [1]. There has been little publication of the changes in DCEMRI parameters in the prostate during the course...
Cerebellar, brainstem and spinal cord metastases from esophageal cancer following radiotherapy are extremely rare. The current study presents the case of a 74-year-old male who was admitted to the Zhejiang Cancer Hospital (Hangzhou, China) with a poorly-differentiated neuroendocrine carcinoma of the esophagus. Following radiotherapy, multiple abnormal signals in the brainstem and spinal cord we...
Fluorine-18-fluorodeoxyglucose- positron emission tomography ((18)F-FDG PET) in head and neck cancer patients is useful for staging, identification of macroscopic disease, detection of invaded lymph nodes and distant metastases, delineation of radiotherapy target volume and assessment of treatment response. This brief review addresses the potential role of PET in radiotherapy planning as compar...
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