Alpha Olivia Hidayati, S.Si.,M.P.H. Pengarang

Exposure to radiation can be dangerous for the body. Hence why we need an effort to minimalize the effects of radiation received, especially for students and lectures during practicum that uses source of radiation. One of the efforts that can be done is to use phantom radiology so that there is no need to expose living things. Previous research has done to make phantom radiology by using gypsum instead of human bones and acrylic as a substitute for soft tissue (human flesh). However, this research still has a shortage which is trabeculae cannot be formed in the phantom produced. The purpose of this study was to determine whether the surfactant solution could be used to form trabeculae in phantom genu by using in the concentration of surfactants with a ratio of 2: 1. The research was conducted in three stages, namely designing the genu phantom and trabecular phantom, printing genu phantoms and trabeculae, and conducting radiographic quality tests of genu phantom. Trabeculae in phantom genu have been successfully made with a water and surfactant ratio of 2:1. Radiographic quality tests showed good detail, sharpness and contrast. The presence of trabeculae and soft tissue is apparent. Surfactants with a ratio of 2:1 can be used to form trabeculae on phantom genu with good quality in radiographic test results