introduction after the publication of task group number 43 dose calculation formalism by the american association of physicists in medicine (aapm), this method has been known as the most common dose calculation method in brachytherapy treatment planning. in this formalism, the water phantom is introduced as the reference dosimetry phantom, while the attenuation coefficient of the sources in the...

chlorotoxin is a 36 amino acids peptide, which is able to block chloride channels isolated from mouse brain. a derivative of chlorotoxin is synthesized and it is labeled by iodine 131; then animal experiments carry out on rats. multiple organ doses may be calculated with biological distribution results in rats with labeled compounds using simulated mcnp4c code. human dose can be calculated usin...

Application of radioactive isotopes is the treatment of choice around the globe for many cancer sites. In this technique, the accuracy of the radiation delivery is highly dependent on the accuracy of radiation dosimetry around individual brachytherapy sources. Moreover, in order to have compatible clinical results, an identical method of source dosimetry must be employed across the world. This ...

PURPOSE This work aims at assessing, through experimental measurements and Monte Carlo calculations, the scatter to primary ratio (SPR) for the micro-CT subsystem of the FLEX Triumph preclinical PET-CT scanner to improve its quantitative capabilities. METHODS Experimental measurements were carried out using the single blocker method, where five cylindrical blockers with diameters ranging betw...

PHITS (Particle and Heavy-Ion Transport code System) [1] is a general purpose particle and heavy-ion MC transport code which can transport neutrons from thermal energies up to 200 GeV. The 3-dimensional Monte-Carlo radiation transport code was developed with collaboration of several institutes including JAEA, RIST, KEK and Chalmers University of Technology. The same method as in the MCNP4C code...