X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2006-10-13
2008-12-02
Glick, Edward J (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
Reexamination Certificate
active
07460640
ABSTRACT:
A radiotherapy monitoring apparatus for monitoring a treatment state by irradiation of radiations on a treatment region includes a flat panel detector that detects the radiations transmitted through the treatment region at least in two places, a comparing unit that compares a relative value of the transmitted radiations in the two places with a reference relative value, and control signal generating units that generate, when the relative value exceeds the reference relative value, a control signal for stopping the irradiation of the radiations.
REFERENCES:
patent: 6113264 (2000-09-01), Watanabe
patent: 2004/0034269 (2004-02-01), Ozaki
patent: 2004/0131145 (2004-07-01), Ohara
Kamikonya Norihiko
Kuwahara Takayuki
Glick Edward J
Kamikonya Norihiko
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sanei Mona M
Toshiba Medical Systems Corporation
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