نتایج جستجو برای: tumor therapy
تعداد نتایج: 1015625 فیلتر نتایج به سال:
Introduction: Radiation therapy is an important procedure for treatment of more than half of tumors. One way to increase the efficiency of radiation therapy is application of radiosensitizer at the site of tumor. gold nanoparticles (GNPs) have several characteristics that make them attractive for using with radiation therapy including small size (1–100 nm), biocompatibility, pr...
Proton therapy is a common form of external radiation therapy based on the manipulation of Bragg peak of this beam, it can treat the tumor by delivering high levels of doses to it, while protecting surrounding healthy tissues against radiation. In this work, the dose distribution of proton and secondary particles such as neutrons, photons, electrons and positrons in gastric cancer proton therap...
background: the rationale was to develop an ablation approach to destroy regions of tumor resistant to radiation and thus reduce the time required for whole tumor ablation, while improving overall tumor control after radiotherapy. materials and methods: the system is composed of a micro positron emission tomography (mpet), 7t magnetic resonance imaging (mri), and a customized mri-compatible foc...
Tumor heterogeneity and constant selection of therapy-resistant cancer cells in the tumor require combinatorial approaches to treatment that affect various vital processes tumor. Immunotherapy made a revolution among treatment. Today, many methods are grouped around this type Most antitumor immunotherapeutic agents administered intravenously, which cause serious, often life-threatening, side ef...
Treatment of radio-sensitized tumor is one of the promising modalities in radiotherapy. Since the different parameters and physical conditions vary in the treatments, the use of simulation models is easier, less costly and faster than practical methods for forecasting the solutions designed to optimize treatment. Therefore in this study, Monte Carlo simulations are applied to investigate the do...
Introduction: Recently, an approach exploiting the proton therapy biological enhancement by using Boron atoms injected inside a tumor, has been proposed. Three alpha particles with an average energy around 4MeV are emitted from the point of reaction between a proton and boron. In addition, the 719 keV prompt gamma emitted by the proton Boron fusion reactions can be used for on-...
objective(s): the goal of this study was assessing the prophylactic effect of exercise and its role as an adjuvant therapy on level of cytokines involved in angiogenesis in estrogen-dependent breast cancer. materials and methods: forty female balb/c mice were randomly assigned to exercise-tumor-exercise (ete), exercise-tumor-rest (etr), rest-tumor-exercise (rte) and rest-tumor-rest (rtr) groups...
sinonasal teratocarcinosarcoma (sntcs) is a rare tumor characterized by mixture architecture of epithelial and mesenchymal components. sntcs is a highly malignant tumor displaying progressive and aggressive growth with poor prognosis. only about 40% of all patients survive after five years. it seems the combination of surgery and radiotherapy currently is the most effective treatment. in this r...
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