摘要:
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.
摘要:
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.
摘要:
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.
摘要:
It is an object of the invention to provide a stable and linear energy reference against a variation in an amount of electronic noise or the like. The present invention is an energy calibration method detecting 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 performing 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.
摘要:
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.
摘要:
In a radiological inspection apparatus, a subject lying on a bed is located in the center of an imaging device. A large number of radiological detectors are arranged around the subject. The radiological detectors are arranged in multiple stages in a direction normal to the body axis of the subject. The radiological detectors are sequentially arranged in three stages in a direction away from the subject. A large number of combinations each of the three radiological detectors are installed like a ring so as to surround the subject. If circuits in the radiological detectors detect a plurality of signals considered to be coincident, the system selects one of the radiological detectors which is closer to the subject depending on the energy of radiation.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.