Radiation therapy plays an important role in the treatment of cancer. The goal of treatment planning is to deliver high-precision radiation doses to the targets while sparing the surrounding normal tissues. Modern advanced techniques have been increasingly used in radiotherapy with the aim to accurately localize the targets, precisely deliver the radiation to the targets, predict treatment outcomes, and improve treatment quality and patient safety. This special issue presents a collection of manuscripts that discuss novel and innovative development in radiation oncology, medical physics, treatment techniques, radiation dosimetry, and other related topics. The special issue will serve as an international forum for researchers to summarize the most recent developments and ideas in radiation oncology, with a special emphasis given to the clinical progress with new technologies. Potential topics include, but are not limited to:

• Clinical radiotherapy
• Medical, clinical, and biomedical physics
• Combined modality treatment
• Radiation dosimetry analysis
• Cancer imaging and application in radiotherapy
• Radiation therapy planning, computing algorithm, and optimization
• Quality control and assurance
• Quality of life analysis
• Particle irradiation
• Brachytherapy

Before submission authors should carefully read over the journal’s Author Guidelines, which are located at http://www.hindawi.com/journals/bmri/guidelines/. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/submit/journals/bmri/oncology/romp/ according to the following timetable: