JP2003167058A5

JP2003167058A5 -

Info

Publication number: JP2003167058A5
Application number: JP2001368062A
Authority: JP
Filing date: 2001-12-03
Publication date: 2005-08-18
Anticipated expiration: 2021-12-03

Claims

With an imaging device,
The imaging apparatus has a plurality of radiation detectors that detect radiation from the subject,
A second radiation detector for detecting radiation that has passed through the first radiation detector;
A radiation inspection apparatus comprising: a signal processing apparatus that is connected to the plurality of radiation detectors and that processes a radiation detection signal detected by the radiation detector.

The radiographic examination apparatus according to claim 1, wherein the imaging apparatus includes an X-ray source that irradiates the subject with X-rays and a flat panel detector having the plurality of radiation detectors.

A bed on which the subject is placed and an imaging device;
The imaging apparatus has a plurality of radiation detectors for detecting radiation from the subject,
Another radiation detector is provided for detecting radiation that has passed through the radiation detector;
A radiation inspection apparatus comprising: a signal processing apparatus that is connected to the plurality of radiation detectors and that processes a radiation detection signal detected by the radiation detector.

The radiation inspection apparatus according to claim 3, wherein the certain radiation detector and the other radiation detector are installed on the radiation detector support member.

The radiographic examination apparatus according to claim 1, wherein the imaging apparatus includes an X-ray source that moves around the subject and irradiates the subject with X-rays.

The imaging apparatus includes a γ-ray source that moves around the subject and irradiates the subject with γ-rays, and the radiation detector is irradiated from the γ-ray source and passes through the subject. The radiological examination apparatus according to any one of claims 1, 3 and 4, wherein both a ray and a gamma ray emitted from the subject due to a radiopharmaceutical administered to the subject are detected. .

The imaging apparatus has an X-ray source that moves around the subject and irradiates the subject with X-rays, and the radiation detector is irradiated from the X-ray source and passes through the subject. The radiation inspection apparatus according to claim 6, which also detects a line.

The radiation inspection apparatus according to claim 1, wherein the certain radiation detector and the other radiation detector are arranged linearly.

A bed on which a subject is placed; and an imaging device, the imaging device having a plurality of radiation detectors for detecting radiation from the subject, wherein the radiation detectors are formed on the imaging device and are arranged on the bed. And is arranged as a plurality of layers in the direction of the bed ,
A signal that is connected to the plurality of radiation detectors, processes a radiation detection signal detected by the radiation detector, and obtains position information of the radiation detector in the bed direction of the radiation detector that outputs the radiation detection signal. A radiation inspection apparatus comprising a processing apparatus.

A bed on which a subject is placed; and an imaging device, the imaging device having a plurality of radiation detectors for detecting radiation from the subject, wherein the radiation detectors are formed on the imaging device and are arranged on the bed. Are installed in a plurality of layers on the radiation detector support member, even at different positions in the direction of the bed .
A signal that is connected to the plurality of radiation detectors, processes a radiation detection signal detected by the radiation detector, and obtains position information of the radiation detector in the bed direction of the radiation detector that outputs the radiation detection signal. A radiation inspection apparatus comprising a processing apparatus.

Wherein the plurality of the radiation detectors disposed at different positions in the bed direction, the radiation inspection apparatus according to claim 9 or claim 10, wherein are arranged linearly in the bed direction.

12. A tomographic image creating device that receives output information from each of the signal processing devices and creates tomographic image data of the subject based on the output information. Radiation inspection apparatus in any one of.

The radiation inspection apparatus according to claim 12, wherein the output information from each of the signal processing apparatuses is output information obtained by the signal processing apparatus processing a γ-ray detection signal that is the radiation detection signal.

The imaging apparatus includes a γ-ray source that moves around the subject and irradiates the subject with γ-rays, and the radiation detector is irradiated from the γ-ray source and passes through the subject. 12. The method according to claim 3, wherein both 1 γ-ray and second γ-ray released from the subject due to a radiopharmaceutical administered to the subject are detected. Radiation inspection equipment.

Equipped with tomographic image data creation device,
The signal processing device outputs first information and detects the second γ-ray by inputting the first γ-ray detection signal output from the radiation detector by detecting the first γ-ray. The second information is output by inputting the second γ-ray detection signal output from the radiation detector by
The tomogram data generation device corrects the second information based on the one information,
The radiation inspection apparatus according to claim 14, wherein tomographic image data of the subject is created using the corrected second information.

The imaging apparatus includes an X-ray source that moves around the subject and irradiates the subject with X-rays, and the plurality of radiation detectors are arranged in a plurality of layers in the direction of the bed. Among the plurality of layers, the radiation detector included in the radiation detector array of at least the first layer from the bed side is one of the radiations, and the X transmitted through the subject. The first detection signal, which is a detection signal of a ray, and the second detection signal, which is a detection signal of a γ-ray emitted from the subject, which is the other radiation, are output. The radiation inspection apparatus according to claim 11.

The imaging apparatus has a γ-ray source that moves around the subject and irradiates the subject with γ-rays, and the radiation detector is irradiated from the γ-ray source and passes through the subject. The radiation inspection apparatus according to claim 16, which also outputs a third detection signal which is a line detection signal.

The radiological examination apparatus according to claim 16 or 17, further comprising a control device that alternately emits and stops X-rays from the X-ray source and performs the X-ray emission for a set time. .

Based on the first information output from the signal processing device by the input of the first detection signal, data of the first tomographic image of the subject is created, and from the signal processing device by the input of the second detection signal. Based on the output second information, data of a second tomogram of the subject is created, and combined tomogram data obtained by synthesizing the data of the first tomogram and the data of the second tomogram is obtained. The radiation inspection apparatus according to claim 16 or 18, further comprising a tomographic image data generation apparatus to be generated.

Based on the first information output from the signal processing device by the input of the first detection signal, data of the first tomogram of the subject is created, and from the signal processing device by the input of the second detection signal. The second information to be output is corrected based on the third information output from the signal processing device by the input of the third detection signal, and the second information of the subject is corrected based on the corrected second information. 18. A tomographic image data creation device that creates data of two tomographic images and creates composite tomographic image data by combining the data of the first tomographic image and the data of the second tomographic image. Radiation inspection equipment.

Equipped with tomographic image data creation device,
Of the radiation detector array of the plurality of layers, wherein the signal processing device connected to each of said radiation detectors in the radiation detector array of a portion of the layer located on the bed side, the first detection signal X-ray signal processing apparatus that outputs first information related to X-rays based on the above, and γ-ray signal processing apparatus that outputs second information related to γ-rays based on the second detection signal, of vessel sequence, the remaining of the signal processing apparatus connected to each of said radiation detectors of the radiation detector in the array comprises the γ-ray signal processing apparatus not provided with the X-ray signal processing apparatus,
The tomographic image data generating apparatus, based on the first information each of said being X-ray signal processing apparatus or RaIzuru force, said creating the data of the first tomographic image of the subject, from the γ-ray signal processing apparatus Based on the output second information, data of a second tomographic image of the subject is generated, and data of a synthetic tomographic image obtained by combining the data of the first tomographic image and the data of the second tomographic image The radiation inspection apparatus according to claim 16, wherein

Equipped with tomographic image data creation device,
Of the radiation detector array of the plurality of layers, wherein the signal processing device connected to each of said radiation detectors in the radiation detector array of a portion of the layer located on the bed side, the first detection signal An X-ray signal processing device that outputs first information related to X-rays based on the second detection information, and second information related to γ-rays based on the second detection signal. 3 an information γ-ray signal processing apparatus for outputting the one of the radiation detector array of a plurality of layers, the rest of the signal processing apparatus connected to each of said radiation detectors of the radiation detector in the array, wherein It is not equipped with an X-ray signal processing device but with the γ-ray signal processing device,
The tomographic image data generating apparatus, based on the first information each of said being X-ray signal processing apparatus or RaIzuru force, said creating the data of the first tomographic image of the subject, from the γ-ray signal processing apparatus The second information to be output is corrected based on the third information output from the signal processing device, and the second tomographic image data of the subject is created based on the corrected second information. 18. A radiological examination apparatus according to claim 17, wherein synthetic radiographic image data is created by synthesizing the first tomographic image data and the second tomographic data.

Comprising a radiation detector deterioration determination device, the plurality of radiation detectors forms a radiation detector array of a plurality of layers in the direction of the bed, each of said radiation detectors to the connected pre-SL signal processing device, By inputting the first γ-ray detection signal output from the radiation detector by detecting the first γ-ray, the first information is output, and the radiation detector deterioration determining device is configured to output each radiation in the plurality of layers. Based on each said 1st information with respect to a detector, the ratio of the measured value of the detection efficiency of those radiation detectors is calculated | required, and the ratio of the measured value and ratio of the theoretical value of the detection efficiency of those radiation detectors are obtained. The radiation inspection apparatus according to claim 14, wherein deterioration of the radiation detectors is determined based on the determination.

Comprising a radiation detector deterioration determination device, before being connected to each of said radiation detectors SL signal processing device by inputting a third detector signal output from the radiation detector, and outputs the first information The radiation detector deterioration determining apparatus obtains a ratio of measured values of detection efficiency of the radiation detectors based on the first information for each radiation detector in the plurality of layers, and compares the ratio of the measured values. The radiation inspection apparatus according to claim 17, wherein deterioration of the radiation detectors is determined based on a ratio of theoretical values of detection efficiencies of the radiation detectors.

The radiation inspection apparatus according to any one of claims 1 to 24, wherein the radiation detector is a semiconductor radiation detector.

A bed that supports the subject, and an imaging device having a plurality of semiconductor detectors that detect radiation emitted from the subject;
Laminating the semiconductor detector, placing the laminated semiconductor detector around the bed,
A tomogram information creation device for creating tomogram information of the subject based on each radiation detection signal detected by the stacked semiconductor detector and the position information of the semiconductor detector that detected the radiation; Characteristic radiological examination apparatus.

A bed that supports the subject, and an imaging device having a plurality of semiconductor detectors that detect radiation emitted from the subject;
The semiconductor detector is a plurality of layers, and a semiconductor detector having the plurality of layers is disposed around the bed,
A tomographic image information creating device for creating tomographic image information of the subject based on each radiation detection signal detected by the semiconductor detector having the plurality of layers and position information of the semiconductor detector that has detected the radiation; Radiation inspection apparatus characterized by that.

28. The radiation inspection apparatus according to claim 26 or 27, wherein the semiconductor detector as the layer is arranged as a layer in the traveling direction of the γ-ray.

The radiation emitted from the subject is detected by a plurality of semiconductor detectors stacked and arranged around the bed,
A radiological examination method, wherein the tomographic image information of the subject is created based on each radiation detection signal detected by the stacked semiconductor detector and position information of the semiconductor detector that detects the radiation.

The radiation emitted from the subject is detected by a plurality of semiconductor detectors arranged around the bed as a plurality of layers,
A radiological examination characterized in that tomographic image information of the subject is created based on each radiation detection signal detected by the semiconductor detector having the plurality of layers and position information of the semiconductor detector that has detected the radiation. Method.

The radiation inspection method according to claim 29 or 30, wherein the semiconductor detector is arranged as a layer in the traveling direction of the γ-rays.