The Application of Elliptic Cylindrical Phantom in Brachytherapy Dosimetric Study of HDR 192Ir Source Woo Sang Ahn, Sung Ho Park, Sang Hoon Jung, Wonsik Choi, Seung Do Ahn and Seong Soo Shin Published online: 06 June 2014 DOI: 10.1051/snamc/201405120