Radiographic image detection device, radiographic image detection method, and computer-readable storage medium
First Claim
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1. A radiographic image detection device comprising:
- an image pickup unit, that has a plurality of radiation detection portions that are arrayed in a two-dimensional form and that detect radiation, and that captures a radiographic image expressed by radiation that has been transmitted through an object of imaging and is incident on the image pickup unit;
a radiographic image generating unit having a plurality of analog signal generating units that are provided in respective correspondence with the plurality of radiation detection portions and that each generate an analog signal corresponding to a radiation dose detected at the corresponding radiation detection portion;
a conversion unit that converts the analog signals, that are generated respectively at the plurality of analog signal generating units, into digital signals;
a judging unit that is configured to monitor a level fluctuation of the analog signal by directly monitoring a waveform of the analog signal over a predetermined minute time and judges whether or not the level fluctuation, over the predetermined minute time of the analog signal generated at each of the plurality of analog signal generating units is within a predetermined threshold value; and
a control unit that controls the conversion unit such that an analog signal, at which it is judged by the judging unit that the level fluctuation is within the predetermined threshold value, is converted into a digital signal, and that controls the conversion unit such that an analog signal, at which it is judged that the level fluctuation has exceeded the predetermined threshold value, is not converted into a digital signal.
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Abstract
A radiographic image detection device includes: an image pickup unit with plural radiation detection portions arrayed in a two-dimensional form and detect radiation, and that captures a radiographic image; a radiographic image generating unit having plural analog signal generating units that generate analog signals corresponding to radiation doses; a conversion unit that converts the generated analog signals into digital signals; a judging unit that judges whether or not level fluctuations of the generated analog signals are within a predetermined threshold value; and a control unit that controls the conversion unit such that an analog signal, at which it is judged that the level fluctuation is within the predetermined threshold value, is converted into a digital signal, and that controls the conversion unit such that an analog signal, at which it is judged that the level fluctuation has exceeded the predetermined threshold value, is not converted into a digital signal.
33 Citations
20 Claims
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1. A radiographic image detection device comprising:
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an image pickup unit, that has a plurality of radiation detection portions that are arrayed in a two-dimensional form and that detect radiation, and that captures a radiographic image expressed by radiation that has been transmitted through an object of imaging and is incident on the image pickup unit; a radiographic image generating unit having a plurality of analog signal generating units that are provided in respective correspondence with the plurality of radiation detection portions and that each generate an analog signal corresponding to a radiation dose detected at the corresponding radiation detection portion; a conversion unit that converts the analog signals, that are generated respectively at the plurality of analog signal generating units, into digital signals; a judging unit that is configured to monitor a level fluctuation of the analog signal by directly monitoring a waveform of the analog signal over a predetermined minute time and judges whether or not the level fluctuation, over the predetermined minute time of the analog signal generated at each of the plurality of analog signal generating units is within a predetermined threshold value; and a control unit that controls the conversion unit such that an analog signal, at which it is judged by the judging unit that the level fluctuation is within the predetermined threshold value, is converted into a digital signal, and that controls the conversion unit such that an analog signal, at which it is judged that the level fluctuation has exceeded the predetermined threshold value, is not converted into a digital signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A radiographic image detection method comprising:
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capturing, by an image pickup unit that has a plurality of radiation detection portions that are arrayed in a two-dimensional form and detect radiation, a radiographic image expressed by radiation that has been transmitted through an object of imaging and is incident on the image pickup unit; generating, by each of a plurality of analog signal generating units that are provided in respective correspondence with the plurality of radiation detection portions, an analog signal that corresponds to a radiation dose detected at the corresponding radiation detection portion; judging whether or not a level fluctuation of the analog signal by directly monitoring a waveform of the analog signal over a predetermined minute time generated at each of the plurality of analog signal generating units is within a predetermined threshold value; and carrying out conversion into a digital signal on an analog signal, at which it is judged that the level fluctuation is within the predetermined threshold value, and stopping conversion into a digital signal of an analog signal, at which it is judged that the level fluctuation has exceeded the predetermined threshold value.
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20. A non-transitory computer readable storage medium that stores a program for causing execution of processing by a radiographic image detection device that has:
- an image pickup unit that has a plurality of radiation detection portions that are arrayed in a two-dimensional form and detect radiation, and that captures a radiographic image expressed by radiation that has been transmitted through an object of imaging and been incident on the image pickup unit;
a radiographic image generating unit having a plurality of analog signal generating units that are provided in respective correspondence with the plurality of radiation detection portions and that each generate an analog signal corresponding to a radiation dose detected at the corresponding radiation detection portion; and
a conversion unit that converts the analog signals, that are generated respectively at the plurality of analog signal generating units, into digital signals,the processing comprising; judging whether or not a level fluctuation of the analog signal generated by directly monitoring a waveform of the analog signal over a predetermined minute time at each of the plurality of analog signal generating units is within a predetermined threshold value; and controlling the conversion unit such that an analog signal, at which it is judged by the judging unit that the level fluctuation is within the predetermined threshold value, is converted into a digital signal, and controlling the conversion unit such that an analog signal, at which it is judged that the level fluctuation has exceeded the predetermined threshold value, is not converted into a digital signal.
- an image pickup unit that has a plurality of radiation detection portions that are arrayed in a two-dimensional form and detect radiation, and that captures a radiographic image expressed by radiation that has been transmitted through an object of imaging and been incident on the image pickup unit;
Specification
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Current AssigneeFujifilm Corporation (Fujifilm Holdings Corporation)
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Original AssigneeFujifilm Corporation (Fujifilm Holdings Corporation)
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InventorsOhta, Yasunori, Nishino, Naoyuki
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Primary Examiner(s)Stoffa, Wyatt
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Application NumberUS13/594,303Publication NumberTime in Patent Office1,278 DaysField of Search378/62, 378/98.8, 378/19, 250/370.08, 250/370.09US Class Current1/1CPC Class CodesA61B 6/548 Remote control of the appar...G01N 23/04 and forming images of the m...G01T 1/17 Circuit arrangements not ad...G01T 1/2006 using a combination of a sc...
