SHIELD TYPE RADIATION THERAPY AND IMAGING HYBRID DEVICE
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United States of America Patent
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Issued Date -
Jun 14, 2012
app pub date -
Mar 23, 2009
filing date -
Mar 23, 2009
priority date (Note) -
Abandoned
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Abstract
A shielding structure against nuclear fragments (referred to as a shield) is operated according to ON and OFF of beam irradiation so as to reduce incidence of nuclear fragments on detectors during beam irradiation. This enables measurement of annihilation radiations and three-dimensional imaging of the irradiation field immediately after irradiation or even during irradiation.
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