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US 5,905,263 AGranted
Depth dose measuring device
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsHiroshi Nishizawa, Kazunori Ikegami, Kunio Madono, Eisaku Teratani, Satoshi Senoo
Life of this patent
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Abstract
In a depth dose measuring device, a light is outputted from an end surface of a block-type detector (202) formed by tying a plurality of scintillation fibers in a bundle, a spectroscope (204) is used to disperse the light so as to measure an amount of light having a wavelength corresponding to an emission spectrum of the scintillation fibers, a picture measuring device (205) and a picture processing device (206) calculate an emission distribution of only a scintillation light depending upon an emission distribution in which the scintillation light and a Cerenkov light are mixed, and a result is displayed on a display device (207).
Claims8
A depth dose measuring device comprising:
- detecting means for receiving a particle beam as input, and outputting a scintillation light and a Cerenkov light caused by the particle beam, from an end surface;
- light detecting means for detecting the scintillation light and the Cerenkov light outputted from the detecting means and removing the Cerenkov light, and outputting a detection result;
- picture signal processing means for processing signals from the detection result outputted from the light detecting means;
- and
- display means for displaying a processing result performed in the picture signal processing means,
- wherein a measurement is made of an amount of the scintillation light having a wavelength corresponding to a light spectrum generated in the detecting means.
3 more elements
A depth dose measuring device comprising:
- detecting means for receiving a particle beam as input, and outputting a light caused by the particle beam from an end surface;
- light detecting means for detecting the light outputted from the detecting means, and outputting a detection result;
- picture signal processing means for processing signals from the detection result outputted from the light detecting means;
- and
- display means for displaying a processing result performed in the picture signal processing means,
- wherein a measurement is made of an amount of light having a wavelength corresponding to a spectrum of the light generated in the detecting means;
- wherein the detecting means comprises:
- a fiber block formed by alternately disposing a plurality of scintillation fibers and a plurality of regular optical fibers;
- wherein only a light outputted from the plurality of scintillation fibers is outputted from a first end surface of the detecting means;
- wherein only a light outputted from the plurality of regular optical fibers is outputted from a second end surface of the detecting means;
- the picture signal processing means comprising:
- first signal processing means for receiving as input and processing the light outputted from the first end surface;
- second signal processing means for receiving as input and processing the light outputted from the second end surface;
- and
- the picture signal processing means calculating a difference between a result obtained in the first signal processing means and a result obtained in the second signal processing means.
12 more elements
A depth dose measuring device comprising:
- detecting means for receiving a particle beam as input, and outputting a light caused by the particle beam from an end surface;
- light detecting means for detecting the light outputted from the detecting means, and outputting a detection result;
- picture signal processing means for processing signals from the detection result outputted from the light detecting means;
- and
- display means for displaying a processing result performed in the picture signal processing means,
- wherein a measurement is made of an amount of light having a wavelength corresponding to a spectrum of the light generated in the detecting means;
- wherein the detecting means comprises:
- a fiber block formed by alternately disposing a plurality of scintillation fibers and a plurality of regular optical fibers;
- wherein a first light outputted from the plurality of scintillation fibers and a second light outputted from the plurality of regular optical fibers are outputted from a first end surface of the detecting means;
- wherein a luminance distribution of the first light and the second light is measured by picture measuring means;
- wherein data of the luminance distribution measured by the picture measuring means is outputted to the picture signal processing means;
- and
- wherein the picture signal processing means performs picture processing of input data of the luminance distribution of the first light and the luminance distribution of the second light;
- and
- wherein a difference in luminance distribution is calculated between the first light and the second light.
12 more elements
A depth dose measuring device comprising:
- detecting means for receiving a particle beam as input, and outputting a light caused by the particle beam from an end surface;
- light detecting means for detecting the light outputted from the detecting means, and outputting a detection result;
- picture signal processing means for processing signals from the detection result outputted from the light detecting means;
- and
- display means for displaying a processing result performed in the picture signal processing means,
- wherein a measurement is made of an amount of light having a wavelength corresponding to a spectrum of the light generated in the detecting means;
- wherein the detecting means comprises:
- a block formed by tying a plurality of regular optical fibers in a bundle;
- wherein a Cerenkov light outputted from an end surface of the detecting means is outputted to the picture signal processing means;
- and
- wherein the picture signal processing means obtains a depth dose distribution depending upon a correlation between a distribution of the inputted Cerenkov light and a previously measured depth absorbed dose distribution.
8 more elements
Dependencies are inferred from the claim text.