A bystander effect is biological changes in non-irradiated cells by transmitted signals from irradiated bystander cells, which causes the radiation toxic effects on the adjacent non-irradiated tissues. This phenomenon occurs by agents such as ionizing radiation, ultraviolet radiation (UVR) and chemotherapy. The bystander effect includes biological processes such as damage to DNA, cell death, ch...

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...

Chemotherapy remains the mainstay of treatment for small cell lung cancer (SCLC). For patients with limited-stage disease, the addition of thoracic radiotherapy confers a moderate improvement in local control and a modest survival benefit, but these improvements come at the cost of increased toxic reactions. The optimal method for integrating chemotherapy and thoracic radiotherapy is unresolved...

April 30, 2015 | ARS 2015 [1] We discerned no significant improvements with the addition of radiation therapy in these patients with resected pancreatic adenocarcinoma treated with modern adjuvant chemotherapy, but statistical power was limited. The eventual results of the ongoing Radiation Therapy Oncology Group (RTOG) study RTOG 0848 will provide definitive data regarding the appropriate role...

PURPOSE This study examined the status of radiation-induced liver injury in adjuvant or palliative gastric cancer radiation therapy (RT), identified risk factors of radiation-induced liver injury in gastric cancer RT, analysed the dose-volume effects of liver injury, and developed a liver dose limitation reference for gastric cancer RT. METHODS AND MATERIALS Data for 56 post-operative gastric...

The goal of radiation therapy for non-small cell lung cancer (NSCLC) is to improve the survival rate of patients without increasing treatment-related toxicity and to improve patients' quality of life. Several prospective randomized trials have demonstrated a survival advantage in combined modality treatment over radiotherapy or chemotherapy alone when a cisplatin-based chemotherapy regimen is u...

Radiation therapy was the first modality that solely cured patients with Hodgkin's lymphoma (HL) as early as the 1940s. In the absence of other curative options, the radiation field in full dose was extended to encompass both involved and uninvolved sites including many normal organs. Decades later, it was evident that some of the HL survivors succumbed to radiation-related effects, mostly seco...

Abstract One of the most challenges to effective treatment cancer is radiation resistance. Published data from a notably experiment performed examine ability compound therapy overcome resistance utilized. The chemotherapeutic drug used was vinblastine. included control tumors and which were treated with radiation, chemotherapy, or both. In this paper mathematical model developed. fits reported ...