1. Department of Radiation Oncology, Saitama Prefectural Cancer Center , 780 Komuro, Ina-machi, Saitama 362-0806 , Japan
2. Department of Radiological Technology, Graduate School of Health Sciences , Teikyo-Univercity, 6-22 Misaki-machi, Omuta, Fukuoka 836-8505 , Japan
3. Department of Radiology , Kaizuka City Hospital, 3-10-20 Hori, Kaizuka, Osaka 597-0015 , Japan
4. Department of Radiology, Keio University School of Medicine , 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582 , Japan
5. Japan Radioisotope Association , 2-28-45 Hon-komagome, Bunkyo-ku, Tokyo 113-8941 , Japan
6. Chiyoda Technol Corporation , 1-7-12 Yushima, Bunkyo-ku, Tokyo 113-8681 , Japan
7. Department of Radiology, National Hospital Organization Tokyo Medical Center , 2-5-1, Higashigaoka, Meguro-ku, Tokyo 152-8902 , Japan
8. Department of Therapeutic Radiology, Tokushima University Graduate School , 3-18-15 Kuramoto-cho, Tokushima 770-8503 , Japan
9. The Japan Foundation for Prostate Research , 2-9-3 Higashi-Shimbashi, Minato-ku, Tokyo 105-0021 , Japan