A new high-sensitivity radiochromic film has been tested for its polarization properties. Gafchromic HS film has been shown to produce a relatively small (less than 3%) variation in the optical density measured at 660 nm wavelength when the light source is fully linear polarized and the film is rotated through a 360 angle. Similar variations are seen when the detector is linearly polarized. If ...

The increased intricacy of Intensity-Modulated-Radiation-Therapy (IMRT) delivery has created the need for a high-resolution 3D-dosimetry (three-dimensional) system capable of measuring and verifying the complex delivery. Present clinical methods are inadequate being restricted to single points (e.g., ion-chambers) or to 2D planes (e.g., film), and are labor intensive. In this paper we show that...

The purpose of this study is to characterize dosimetric properties of thin film photovoltaic sensors as a platform for development of prototype dose verification equipment in radiotherapy. Towards this goal, flexible thin-film sensors of dose with embedded data acquisition electronics and wireless data transmission are prototyped and tested in kV and MV photon beams. Fundamental dosimetric prop...

HAE SUN JEONG, YOUNGYIH HAN, OYEON KUM, CHAN HYEONG KIM, SANG GYU JU, JUNG SUK SHIN, JIN SUNG KIM, and JOO HWAN PARK Department of Nuclear Engineering, Hanyang University 17 Haengdang, Seongdong, Seoul 133-791, Korea Korea Atomic Energy Research Institute 1045 Daedoek-daero, Yuseong-gu, Daejeon 305-353, Korea Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University Scho...