Radiotherapy monitoring apparatus
AssigneesNorihiko Kamikonya, Toshiba Medical Systems Corporation
InventorsNorihiko Kamikonya, Takayuki Kuwahara
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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.
Claims20
A radiotherapy monitoring apparatus for monitoring a treatment state by irradiation of radiations on a treatment region, comprising:
- a detecting unit configured to detect the radiations transmitted through the treatment region at least in two places;
- a comparing unit configured to compare a relative value of the transmitted radiations in the two places with a reference relative value;
- and
- a control signal generating unit configured to generate, when the relative value exceeds the reference relative value, a control signal for stopping the irradiation of the radiations, the relative value being at least one of a ratio of transmitted doses in the at least two places and an absolute value of a difference between the transmitted doses.
A radiotherapy monitoring apparatus for monitoring a treatment state by irradiation of radiations on a treatment region, comprising:
- a reference value calculating unit configured to calculate at least one of a ratio of exit doses in at least two places in an irradiation range of the radiations and an absolute value of a difference between the exit doses as a reference value on the basis of a planned dose distribution;
- a detecting unit configured to detect the radiations transmitted through the treatment region;
- a measured value calculating unit configured to calculate at least one of the ratio of the exit doses in the two places and the absolute value of the difference between the exit doses as a measured value on the basis of an output of the detecting unit;
- a comparing unit configured to compare the measured value with the reference value;
- and
- a control signal output unit configured to output a control signal corresponding to a result obtained by comparing the measured value with the reference value.
A radiotherapy monitoring apparatus for monitoring a treatment state by irradiation of radiations on a treatment region, comprising:
- a detecting unit configured to detect the radiations transmitted through the treatment region;
- a calculating unit configured to calculate at least one of a ratio of exit doses in at least two places in an irradiation range of the radiations and an absolute value of a difference between the exit doses as a measured value on the basis of an output of the detecting unit;
- a comparing unit configured to compare the measured value with a predetermined value;
- and
- a signal output unit configured to output a control signal corresponding to a result of the comparison of the measured value with the predetermined value.
Dependencies are inferred from the claim text.