نتایج جستجو برای: lung tumor motion
تعداد نتایج: 906638 فیلتر نتایج به سال:
The ultimate goal of radiation therapy is to efficiently deliver radiation in order to eradicate tumors, while adequately sparing nearby normal tissues. With the emergence of advanced technologies in radiation delivery, more and more conformal radiation delivery has been achieved in order to overcome challenges such as motion management between treatment fractions as well as during radiation de...
In external-beam radiotherapy, using external markers is one of the most reliable tools to predict tumor position, in clinical applications. The main challenge in this approach is tumor motion tracking with highest accuracy that depends heavily on external markers location, and this issue is the objective of this study. Four commercially available feature selection algorithms entitled 1) Correl...
BASP1 is involved in signal transduction and cytoskeleton formation plays a tumor-promoting or tumor-suppressing role cancers. We found was overexpressed lung adenocarcinoma tissues...
we report a patient who was admitted to the department of medicine with palpitation, dyspnea and left flank pain, chest x-ray revealed a mass in the left lung. the lesion was evaluated as a pulmonary tumor, with a high suspicion of malignancy. intravenous urography, sonography, and ctscanning revealed a thoracic kidney at the location previously thought to be a lung mass. this is the first repo...
we present a 23-year-old man with distal humerus osteoid osteoma referring to our hospital with pain and progressive stiffness. the patient has been suffering from the disease for two years without a certain diagnosis. the radiographies of elbow did not reveal the pathology but further ct scan and mri studies demonstrated the tumor. the en block resection of the tumor resolved the pain immediat...
Background: The present study aims to assess the impact of various image reconstruction methods in 18F-FDG PET/CT imaging on the quantification performance of the proposed technique for joint compensation of respiratory motion and partial volume effects (PVEs) in patients with non-small cell lung cancer. Materials and Methods: An image-based deconvolution technique was proposed, incorporating w...
Potential for Interfraction Esophageal and Tumor Motion to Increase Esophageal Toxicity in Lung SBRT
BACKGROUND The "gold standard" approach for defining an internal target volume (ITV) is using 10 gross tumor volume (GTV) phases delineated over the course of one respiratory cycle. However, different sites have adopted several alternative techniques which compress all temporal information into one CT image set to optimize work flow efficiency. The purpose of this study is to evaluate alternati...
Background Our understanding of those underlying mechanisms that contribute to metastatic progression in melanoma remains limited. While uncommon, hyperprogression response immunotherapy is likely be an extreme form acquired resistance. Therefore, studies define the these processes are expected provide insight into discovery novel therapeutic targets and predictive biomarkers. We previously dem...
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