Satoko Nakano*, Masahiko Ohtsuka, Akemi Mibu, Masato Karikomi, Hitomi Sakata and Masahiro Yamamoto
* Corresponding author: Satoko Nakano satokon@m2.gyao.ne.jp
BMC Medical Imaging 2012, 12:13 doi:10.1186/1471-2342-12-13