1. Department of Physics; Faculty of Mathematics and Natural Sciences; Diponegoro University; Semarang Central Java Indonesia
2. Department of Health Sciences; Faculty of Medical Sciences; Kyushu University; Fukuoka Fukuoka Prefecture Japan
3. Department of Physics; Faculty of Mathematics and Natural Sciences; Bandung Institute of Technology; Bandung West Java Indonesia
4. Applied Physics and Medical Imaging; California State University Channel Islands; Camarillo CA USA