Polarity correction factor for flattening filter free photon beams in several cylindrical ionization chambers

Toshiyuki Ogata1, Kazuyuki Uehara2, Masao Nakayama2

  • 1Division of Medical Technology Support, Kobe Minimally Invasive Cancer Center, 8-5-1, Minatojima-nakamachi, Chuo-ku, Kobe, 650-0046, Japan. ogata@k-mcc.net.