Abstract: A proton beam therapy system 1 includes an irradiation nozzle 25 for irradiating a target 31A with a particle beam, a proton beam irradiation control system 41 that controls the irradiation nozzle 25, a dose monitor 27B that measures an irradiation amount of the particle beam emitted to the target 31A, a position monitor 27A that measures a position of the particle beam emitted to the target 31A, and a dose distribution evaluation system during irradiation 55 that calculates a dose distribution of the particle beam emitted to the target 31A during irradiation. This system supports a medical staff to quickly and appropriately make an intervention determination for treatment such as discontinuation of particle therapy, a change in conditions thereof, or the like in the process of particle irradiation.

Abstract: A treatment planning apparatus 501 or a clinical decision support apparatus 701 calculates a dose distribution, calculates the damage to a normal tissue for a plurality of number of times of radiation irradiation based on the calculated dose distribution, and displays at least one or more calculated damages to the normal tissues on display apparatuses 603 and 703 or outputs the same to an outside of the apparatuses 501 and 701. Accordingly, since effects can be calculated for a plurality of number of times of irradiation, the optimum number of time of irradiation can be presented, and an operator and a doctor can be presented with a suitable decision material of a radiation irradiation planning.

Abstract: A proton beam therapy system 1 includes an irradiation nozzle 25 for irradiating a target 31A with a particle beam, a proton beam irradiation control system 41 that controls the irradiation nozzle 25, a dose monitor 27B that measures an irradiation amount of the particle beam emitted to the target 31A, a position monitor 27A that measures a position of the particle beam emitted to the target 31A, and a dose distribution evaluation system during irradiation 55 that calculates a dose distribution of the particle beam emitted to the target 31A during irradiation. This system supports a medical staff to quickly and appropriately make an intervention determination for treatment such as discontinuation of particle therapy, a change in conditions thereof, or the like in the process of particle irradiation.

Abstract: A treatment planning apparatus 501 or a clinical decision support apparatus 701 calculates a dose distribution, calculates the damage to a normal tissue for a plurality of number of times of radiation irradiation based on the calculated dose distribution, and displays at least one or more calculated damages to the normal tissues on display apparatuses 603 and 703 or outputs the same to an outside of the apparatuses 501 and 701. Accordingly, since effects can be calculated for a plurality of number of times of irradiation, the optimum number of time of irradiation can be presented, and an operator and a doctor can be presented with a suitable decision material of a radiation irradiation planning.

Abstract: A semiconductor radiation detector is capable of measuring a ?-ray energy spectrum at 122 keV and 662 keV and having an energy resolution of no greater than 8% with respect to 122 keV ?-rays. The semiconductor radiation detector uses a semiconductor crystal sandwiched by a cathode and an anode. The semiconductor crystal is configured from a thallium bromide single crystal in which the concentration of lead as an impurity is less than 0.1 ppm, the full width at half maximum of the (110) rocking curve in the X-ray diffraction in specimen tilting angle scan is no greater than 1.6 degrees, the full width at half maximum in specimen in-plane rotation angle scan is no greater than 3.5 degrees, and the full width at half maximum in X-ray incident angle scan is no greater than 1.3 degrees.

Abstract: There is provided is a radiation image acquiring device which corrects a positional displacement between a collimator and a detector and obtains an image without artifacts. The device includes a detector (21) to measure a radiation; a collimator (26) including a through-hole (27) having one or more detectors (21) disposed therein and configured to limit an incident direction of the radiation; a positional displacement measuring unit configured to measure a positional displacement between the detector (21) and the collimator (26) by use of a profile of a radiation source measured by the detector (21) based on the radiation source disposed corresponding to a predetermined detector (21).

Abstract: The present invention provides a semiconductor radiation detector including a semiconductor crystal sandwiched between a cathode electrode and an anode electrode, and a nuclear medicine diagnosis device using the semiconductor radiation detector. The semiconductor crystal is composed of a single crystal of thallium bromide of which the concentration of lead taken as an impurity is less than 0.1 ppm.

Abstract: There is provided is a radiation image acquiring device which corrects a positional displacement between a collimator and a detector and obtains an image without artifacts. The device includes a detector (21) to measure a radiation; a collimator (26) including a through-hole (27) having one or more detectors (21) disposed therein and configured to limit an incident direction of the radiation; a positional displacement measuring unit configured to measure a positional displacement between the detector (21) and the collimator (26) by use of a profile of a radiation source measured by the detector (21) based on the radiation source disposed corresponding to a predetermined detector (21).

Abstract: The radiation imaging device acquires incident position information of radiation for each detector by setting the size of a through-hole such that at least one pixel is arrayed in a plane view from a direction perpendicular to the detector plane; arranges a septa in displacing from a boundary line between a detector pair in a plane view from a direction perpendicular to the detector plane; further arranging the septa so as to be orthogonal to the boundary line between the detector pair in a plane view from a direction perpendicular to the detector plane; arranges the top of the through-hole in a plane view from a direction perpendicular to the detector plane, in displacing from the boundary line of the detector pair; and arranges the top of the detectors in a plane view from a direction perpendicular to the detector plane so as to be visible through the through-hole.

Abstract: A first ?-ray generating in a body, caused by a PET pharmaceutical, and a second ?-ray emitted from a ?-ray source and transmitting through the body are detected with a radiation detector. The emission image information (E image information), E0, E1 and E2, at each of patient motion phases, 0, 1 and 2, which divided a respiration period, are prepared by using information obtained from the detected first ?-ray. The transmission image information (T image information), T0, T1 and T2, at each of patient motion phases, 0, 1 and 2, respectively, are prepared, by using information obtained from the detected second ?-ray. Relative displacements, ([F10], [F20]), are determined by superimposing, on T image information T0, other T image information, T1 and T2. The E image information, E1, E2, are superimposed on the E image information E0, by using this relative displacement.

Abstract: A nuclear medical diagnosis apparatus capable of attaining improvement of the sensitivity by the reduction of a count loss of the data is provided. A data sort section inside a data acquisition unit re-arranges and outputs the data packet from a plurality of auxiliary data acquisition unit in order of the detection time data. A coincidence detection section includes a pair check section and a pair generation section. The pair check section refers to a context on the data packet re-arranged in order of the detection time, and judges a pair relating to a coincidence counting. The pair generation section, based on this judgment result, merges the data packet used as a pair, and outputs the same to the collection work station.

Abstract: A first ?-ray generating in a body, caused by a PET pharmaceutical, and a second ?-ray emitted from a ?-ray source and transmitting through the body are detected with a radiation detector. The emission image information (E image information), E1, E1 and E2, at each of patient motion phases, 0, 1 and 2, which divided a respiration period, are prepared by using each information obtained from the detected first ?-ray. The transmission image information (T image information), T0, T1 and T2, at each of patient motion phases, 0, 1 and 2, respectively, are prepared, by using each information obtained from the detected second ?-ray. Relative displacements, ([F10], [F20]), are determined by superimposing, on T image information T0, other T image information, T1 and T2. The E image information, E1, E2, are superimposed on the E image information E0, by using this relative displacement.

Abstract: A first ?-ray generating in a body, caused by a PET pharmaceutical, and a second ?-ray emitted from a ?-ray source and transmitting through the body are detected with a radiation detector. The emission image information (E image information), E0, E1 and E2, at each of patient motion phases, 0, 1 and 2, which divided a cardiac beat and respiration period, are prepared by using each information obtained from the detected first ?-ray. The transmission image information (T image information), T0, T1 and T2, at each of patient motion phases, 0, 1 and 2, respectively, are prepared, by using each information obtained from the detected second ?-ray. Relative displacements, ([F10], [F20]), are determined by superimposing, on T image information T0, other T image information, T1 and T2. The E image information, E1, E2 are superimposed on the E image information E0, by using this relative displacement.

Abstract: The energy calibration method detects irradiation of radiation with predetermined energy from a calibration radiation source using a plurality of radiation detectors having a peak value distribution whose mode and mean value are different and performs calibration so that mean values become identical within the peak value distributions of the respective radiation detectors obtained through irradiation of radiation with predetermined energy from the calibration radiation source.

Abstract: A nuclear medicine diagnostic apparatus is provided that can improve time resolution and energy resolution and diagnosing accuracy by enhancing radiation detectors in terms of moisture-proofing and dust-proofing effects while efficiently cooling the radiation detectors. The apparatus has a first region A in which radiation detectors are to be accommodated, and a second region B in which signal processors are to be accommodated. These regions are provided inside a housing member 5 via an adiabatic member 7. The housing member 5 also has a ventilation port 8 formed to communicate with the first region A and equipped with an anti-dust filter. Ventilation holes 34 are formed to communicate with the first region B and serving as entrances for cooling air. Unit fans 33 serve as exits for the cooling air.

Abstract: A radiological imaging apparatus includes an imaging apparatus having an opening for insertion of a bed thereinto, and an attenuation correction data creating device. The imaging has a plurality of radiation detectors disposed around the opening and a plurality of gamma ray generation units residing between the opening and the radiation detectors disposed at a position nearest to the opening and being placed in a longitudinal direction of the bed. Each ?-ray generation unit has ?-ray sources of single photon emission nuclear species and is arranged to externally radiate a ?-ray alternately from either one of the ?-ray generators toward the opening. The data creator prepares attenuation correction data based on a detection signal as output from the radiation detector due to the incoming radiation of ?-rays from the ?-ray generator.

Abstract: A radiological imaging apparatus including a bed which supports an object to be examined and an imaging apparatus, wherein the imaging apparatus has a unit substrate including a first substrate including a radiation detector and a second substrate including a signal processing apparatus to which detection signals of the radiation detector are inputted and the first substrate is connected through a connector, and is provided with a heat insulating member of separating mutually a first area where the radiation detector is disposed from a second area where the signal processing apparatus is disposed, both of which are formed inside the imaging apparatus.

Abstract: A radiological imaging apparatus includes an imaging apparatus having an opening for insertion of a bed thereinto, and an attenuation correction data creating device. The imaging has a plurality of radiation detectors disposed around the opening and a plurality of gamma ray generation units residing between the opening and the radiation detectors disposed at a position nearest to the opening and being placed in a longitudinal direction of the bed. Each ?-ray generation unit has ?-ray sources of single photon emission nuclear species and is arranged to externally radiate a ?-ray alternately from either one of the ?-ray generators toward the opening. The data creator prepares attenuation correction data based on a detection signal as output from the radiation detector due to the incoming radiation of ?-rays from the ?-ray generator.

Abstract: A nuclear medical diagnosis apparatus capable of attaining improvement of the sensitivity by the reduction of a count loss of the data is provided. A data sort section inside a data acquisition unit re-arranges and outputs the data packet from a plurality of auxiliary data acquisition unit in order of the detection time data. A coincidence detection section includes a pair check section and a pair generation section. The pair check section refers to a context on the data packet re-arranged in order of the detection time, and judges a pair relating to a coincidence counting. The pair generation section, based on this judgment result, merges the data packet used as a pair, and outputs the same to the collection work station.

Abstract: An electric rotating machine capable of lowering the temperature of a rotor disposed, wherein at least one of closed ventilation loops for cooling is formed, one of the loops constituting a ventilation passage communicating with an exhaust side through a heat source of the end of the generator to a cooler, thereby to supply cooling wind to the rotor after it passes through the cooler.