PURPOSE To evaluate the patterns of regression of iris melanoma after treatment with palladium-103 (103Pd) plaque brachytherapy. DESIGN Retrospective, nonrandomized, interventional case series. PARTICIPANTS Fifty patients with primary malignant melanoma of the iris. METHODS Palladium-103 plaque brachytherapy. MAIN OUTCOME MEASURES Changes in tumor size, pigmentation, and vascularity; in...

Cyclotrons are particle accelerator machines which have many applications in industry, technology and medicine. Cyclotrons play an important role in medicine and about 50% of the all particle accelerators running in the world are used in medicine for radiation therapy, medical radioisotopes production, and biomedical research. In this short review the use of cyclotrons for a radiation therapy m...

Introduction: In this paper, by complete definition of human eye containing the various parts and their materials, the difference between this model and a homogeneous water phantom are compared for two ophthalmic plaques using 125I and 103Pd. Material and methods: The simulation of the two phantoms were performed in the MCNP-4C code and by using the geometry of a three-dimensional eye, differen...

Since publication of the 2004 update to the American Association of Physicists in Medicine (AAPM) Task Group No. 43 Report (TG-43U1), several new low-energy photon-emitting brachytherapy sources have become available. Many of these sources have satisfied the AAPM prerequisites for routine clinical use as of January 10, 2005, and are posted on the Joint AAPM/RPC Brachytherapy Seed Registry. Cons...