Volume 34, Issue 1, 2013
Friday, March 15, 2013
Rhizophora spp. has the potential to be a tissue equivalent material as it has the same radiological properties found in water and tissues. Ten types of particleboards fabricated from two particle sizes and different percentages of resins designated as Particle A: PF 8%, UF 8%, UF 13%, PRF 13%, PF 13% and Particle B: PF 8%, UF 8%, UF 13%, PRF 13%, PF 13% were used in a 0º, 7º, 20º, 45º, and 70º Compton scattering arrangement using an Am-241 source and a Nal (Tl) detector system. Channel shift, measured scattered photon energy and intensity (count per second) was evaluated for scattering properties compared with water. Results showed that channel shift was almost constant at 0º – 20º angle of scattering which was around 387 - 391 channel number and started to reduce simultaneously from 370 - 387 channel numbers at 20º until 70º for all samples including water. All particleboards exhibit the same pattern of measured scattered photon energy with water. On the other hand, all of the samples showed exponential relationship of count per second for angle of scattering from 7º to 70º. As for conclusion, all types of particleboards have the same scattering properties as their channel shift, measured scattered photon energy, and count per second were almost same to each other as well as to water. Thus, we can say that these particleboards have the potential to become as water equivalent materials after considering the limitations in this study.