JP2019024589A5 - - Google Patents

Download PDF

Info

Publication number
JP2019024589A5
JP2019024589A5 JP2017144093A JP2017144093A JP2019024589A5 JP 2019024589 A5 JP2019024589 A5 JP 2019024589A5 JP 2017144093 A JP2017144093 A JP 2017144093A JP 2017144093 A JP2017144093 A JP 2017144093A JP 2019024589 A5 JP2019024589 A5 JP 2019024589A5
Authority
JP
Japan
Prior art keywords
radiation
image
image capturing
unevenness
capturing apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2017144093A
Other languages
Japanese (ja)
Other versions
JP7000728B2 (en
JP2019024589A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2017144093A priority Critical patent/JP7000728B2/en
Priority claimed from JP2017144093A external-priority patent/JP7000728B2/en
Publication of JP2019024589A publication Critical patent/JP2019024589A/en
Publication of JP2019024589A5 publication Critical patent/JP2019024589A5/ja
Application granted granted Critical
Publication of JP7000728B2 publication Critical patent/JP7000728B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Description

請求項９に記載の発明は、請求項５〜８のいずれか一項に記載の発明において、
前記統計量は、標準偏差である。
請求項１０に記載の発明は、請求項１〜９のいずれか一項に記載の発明において、
加速度センサー又は歪みセンサーを備え、
前記加速度センサーにより所定の加速度が検知された場合、又は、前記歪みセンサーにより前記放射線画像装置内の歪みが検知された場合に、前記判定手段は前記放射線検出器の故障の有無を判定する。 The invention according to claim 9 is the invention according to any one of claims 5 to 8,
The statistic is a standard deviation.
The invention according to claim 10 is the invention according to any one of claims 1 to 9,
Equipped with an acceleration sensor or strain sensor,
When the acceleration sensor detects a predetermined acceleration, or when the distortion sensor detects a distortion in the radiation imaging apparatus, the determination unit determines whether the radiation detector has a failure.

請求項１１に記載の発明の放射線画像撮影システムは、
複数の走査線および複数の信号線と、二次元状に配列された複数の放射線検出素子と、前記放射線検出素子に逆バイアス電圧を印加するバイアス線と、を備え、前記放射線検出素子の一方の電極には前記バイアス線が接続されており、前記放射線検出素子の他方の電極にはスイッチ素子を介して前記信号線が接続されている放射線検出器を備える放射線画像撮影装置と、
前記放射線画像撮影装置の前記放射線検出器における故障の有無を判定する判定装置と、
を備え、
前記放射線画像撮影装置は、
前記放射線検出器において前記信号線と前記バイアス線間の電位差を変化させて前記放射線検出素子に生じる電荷を読み出すことにより故障検査用画像を取得して前記判定装置に送信し、
前記判定装置は、
事前に前記放射線検出器において前記信号線と前記バイアス線間の電位差を変化させて前記放射線検出素子に生じる電荷を読み出すことにより取得された基準画像に基づいて、前記放射線画像撮影装置から送信された前記故障検査用画像のムラを補正するムラ補正手段と、
前記ムラ補正手段によりムラが補正された前記故障検査用画像に基づいて、前記放射線検出器の故障の有無を判定する判定手段と、
を備える。
請求項１２に記載の発明は、請求項１１に記載の発明において、
前記判定装置は、前記判定手段による判定結果を通知する通知手段を備える。 The radiation image capturing system according to the invention of claim 11 is
A plurality of scanning lines and a plurality of signal lines, a plurality of radiation detection elements arranged two-dimensionally, and a bias line for applying a reverse bias voltage to the radiation detection element, one of the radiation detection element The bias line is connected to an electrode, and the radiation image capturing apparatus includes a radiation detector in which the signal line is connected to the other electrode of the radiation detection element via a switch element,
A determination device for determining the presence or absence of a failure in the radiation detector of the radiation image capturing device,
Equipped with
The radiation image capturing apparatus,
In the radiation detector, the potential difference between the signal line and the bias line is changed to read an electric charge generated in the radiation detection element to acquire a failure inspection image and send it to the determination device,
The determination device,
Based on a reference image acquired by previously changing the potential difference between the signal line and the bias line in the radiation detector and reading out the charges generated in the radiation detection element, the radiation image is transmitted from the radiation image capturing apparatus. Unevenness correcting means for correcting unevenness of the failure inspection image,
Based on the image for failure inspection in which unevenness has been corrected by the unevenness correction means, a determination means for determining the presence or absence of a failure of the radiation detector,
Equipped with.
The invention according to claim 12 is the same as the invention according to claim 11,
The determination device includes a notification unit that notifies the determination result of the determination unit.

Claims (12)

複数の走査線および複数の信号線と、二次元状に配列された複数の放射線検出素子と、前記放射線検出素子に逆バイアス電圧を印加するバイアス線と、を備え、前記放射線検出素子の一方の電極には前記バイアス線が接続されており、前記放射線検出素子の他方の電極にはスイッチ素子を介して前記信号線が接続されている放射線検出器を備える放射線画像撮影装置であって、
前記放射線検出器は、前記信号線と前記バイアス線間の電位差を変化させて前記放射線検出素子に生じる電荷を読み出すことにより故障検査用画像を取得し、
事前に前記放射線検出器において前記信号線と前記バイアス線間の電位差を変化させて前記放射線検出素子に生じる電荷を読み出すことにより取得された基準画像に基づいて、前記故障検査用画像のムラを補正するムラ補正手段と、
前記ムラ補正手段によりムラが補正された前記故障検査用画像に基づいて、前記放射線検出器の故障の有無を判定する判定手段と、
を備える放射線画像撮影装置。 A plurality of scanning lines and a plurality of signal lines, a plurality of radiation detection elements arranged two-dimensionally, and a bias line for applying a reverse bias voltage to the radiation detection element, one of the radiation detection element A radiation image capturing apparatus comprising a radiation detector in which the bias line is connected to an electrode, and the other electrode of the radiation detecting element is connected to the signal line via a switch element,
The radiation detector acquires a failure inspection image by changing the potential difference between the signal line and the bias line to read out the charges generated in the radiation detection element,
Based on a reference image acquired by previously changing the potential difference between the signal line and the bias line in the radiation detector and reading out the charges generated in the radiation detection element, the unevenness of the failure inspection image is corrected. Unevenness correction means,
Based on the image for failure inspection in which unevenness has been corrected by the unevenness correction means, a determination means for determining the presence or absence of a failure of the radiation detector,
A radiographic image capturing device. 前記故障検査用画像にオフセット補正を施すオフセット補正手段を備え、
前記ムラ補正手段は、予めオフセット補正が施された前記基準画像に基づいて、前記オフセット補正が施された故障検査用画像のムラを補正する請求項１に記載の放射線画像撮影装置。 An offset correction means for performing offset correction on the failure inspection image,
The radiographic image capturing apparatus according to claim 1, wherein the unevenness correcting unit corrects unevenness of the failure inspection image that has been offset-corrected based on the reference image that has been offset-corrected in advance. 前記ムラ補正手段は、前記故障検査用画像を前記基準画像により除算又は減算することにより前記故障検査用画像のムラを補正する請求項１又は２に記載の放射線画像撮影装置。 The radiation image capturing apparatus according to claim 1, wherein the unevenness correcting unit corrects unevenness of the failure inspection image by dividing or subtracting the failure inspection image with the reference image. 前記ムラ補正手段は、前記基準画像における画素信号値差に対応する補正係数に基づいて、前記故障検査用画像のムラを補正する請求項１又は２に記載の放射線画像撮影装置。 The radiation image capturing apparatus according to claim 1, wherein the unevenness correcting unit corrects unevenness of the failure inspection image based on a correction coefficient corresponding to a pixel signal value difference in the reference image. 前記判定手段は、前記故障検査用画像の全面を覆うように１つ以上の関心領域を設定し、前記関心領域における画素信号値の統計量を算出し、算出した統計量に基づいて、前記放射線検出器の故障の有無を判定する請求項１〜４のいずれか一項に記載の放射線画像撮影装置。 The determination means sets one or more regions of interest so as to cover the entire surface of the failure inspection image, calculates a statistic of pixel signal values in the region of interest, and calculates the radiation based on the calculated statistic. The radiation image capturing apparatus according to claim 1, wherein the presence or absence of a detector failure is determined. 前記判定手段は、隣接する関心領域同士が一部オーバーラップするように前記関心領域を設定する請求項５に記載の放射線画像撮影装置。 The radiation image capturing apparatus according to claim 5, wherein the determination unit sets the regions of interest such that the regions of interest that are adjacent to each other partially overlap each other. 前記判定手段は、前記放射線検出器の故障により異常が発生すると推定される画像領域とそれ以外の画像領域との境界部が前記関心領域に含まれるように前記関心領域を設定する請求項５に記載の放射線画像撮影装置。 The said determination means sets the said ROI so that the boundary part of the image area estimated to generate abnormality by the failure of the said radiation detector, and the other image area may be contained in the said ROI. The radiographic image capturing apparatus described. 前記判定手段は、前記放射線検出器に備えられている少なくとも読み出しＩＣ又はゲートドライバーＩＣの故障により異常が発生すると推定される画像領域とそれ以外の画像領域との境界部が前記関心領域に含まれるように前記関心領域を設定する請求項７に記載の放射線画像撮影装置。 In the determination unit, the region of interest includes a boundary portion between an image region in which an abnormality is estimated to occur due to a failure of at least a read IC or a gate driver IC included in the radiation detector and another image region. The radiographic image capturing apparatus according to claim 7, wherein the region of interest is set as described above. 前記統計量は、標準偏差である請求項５〜８のいずれか一項に記載の放射線画像撮影装置。 The radiation image capturing apparatus according to claim 5, wherein the statistic is a standard deviation. 加速度センサー又は歪みセンサーを備え、Equipped with an acceleration sensor or strain sensor,
前記加速度センサーにより所定の加速度が検知された場合、又は、前記歪みセンサーにより前記放射線画像装置内の歪みが検知された場合に、前記判定手段は前記放射線検出器の故障の有無を判定する請求項１〜９のいずれか一項に記載の放射線画像撮影装置。 The determination unit determines whether or not the radiation detector has a failure, when a predetermined acceleration is detected by the acceleration sensor, or when a distortion in the radiation imaging apparatus is detected by the distortion sensor. The radiation image capturing apparatus according to any one of 1 to 9. 複数の走査線および複数の信号線と、二次元状に配列された複数の放射線検出素子と、前記放射線検出素子に逆バイアス電圧を印加するバイアス線と、を備え、前記放射線検出素子の一方の電極には前記バイアス線が接続されており、前記放射線検出素子の他方の電極にはスイッチ素子を介して前記信号線が接続されている放射線検出器を備える放射線画像撮影装置と、
前記放射線画像撮影装置の前記放射線検出器における故障の有無を判定する判定装置と、
を備え、
前記放射線画像撮影装置は、
前記放射線検出器において前記信号線と前記バイアス線間の電位差を変化させて前記放射線検出素子に生じる電荷を読み出すことにより故障検査用画像を取得して前記判定装置に送信し、
前記判定装置は、
事前に前記放射線検出器において前記信号線と前記バイアス線間の電位差を変化させて前記放射線検出素子に生じる電荷を読み出すことにより取得された基準画像に基づいて、前記放射線画像撮影装置から送信された前記故障検査用画像のムラを補正するムラ補正手段と、
前記ムラ補正手段によりムラが補正された前記故障検査用画像に基づいて、前記放射線検出器の故障の有無を判定する判定手段と、
を備える放射線画像撮影システム。 A plurality of scanning lines and a plurality of signal lines, a plurality of radiation detection elements arranged two-dimensionally, and a bias line for applying a reverse bias voltage to the radiation detection element, one of the radiation detection element The bias line is connected to an electrode, and the radiation image capturing apparatus includes a radiation detector in which the signal line is connected to the other electrode of the radiation detection element via a switch element,
A determination device for determining the presence or absence of a failure in the radiation detector of the radiation image capturing device,
Equipped with
The radiation image capturing apparatus,
In the radiation detector, the potential difference between the signal line and the bias line is changed to read an electric charge generated in the radiation detection element to acquire a failure inspection image and send it to the determination device,
The determination device,
Based on a reference image acquired by previously changing the potential difference between the signal line and the bias line in the radiation detector and reading out the charges generated in the radiation detection element, the radiation image is transmitted from the radiation image capturing apparatus. Unevenness correcting means for correcting unevenness of the failure inspection image,
Based on the image for failure inspection in which unevenness is corrected by the unevenness correction means, a determination means for determining the presence or absence of a failure of the radiation detector,
Radiographic image capturing system. 前記判定装置は、前記判定手段による判定結果を通知する通知手段を備える請求項１１に記載の放射線画像撮影システム。The radiation image capturing system according to claim 11, wherein the determination device includes a notification unit that notifies a determination result of the determination unit.
JP2017144093A 2017-07-26 2017-07-26 Radiation imaging equipment and radiation imaging system Active JP7000728B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017144093A JP7000728B2 (en) 2017-07-26 2017-07-26 Radiation imaging equipment and radiation imaging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017144093A JP7000728B2 (en) 2017-07-26 2017-07-26 Radiation imaging equipment and radiation imaging system

Publications (3)

Publication Number Publication Date
JP2019024589A JP2019024589A (en) 2019-02-21
JP2019024589A5 true JP2019024589A5 (en) 2020-08-27
JP7000728B2 JP7000728B2 (en) 2022-01-19

Family

ID=65474915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017144093A Active JP7000728B2 (en) 2017-07-26 2017-07-26 Radiation imaging equipment and radiation imaging system

Country Status (1)

Country Link
JP (1) JP7000728B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7463959B2 (en) 2020-12-24 2024-04-09 株式会社島津製作所 Deterioration determination method and deterioration determination device for industrial X-ray imaging device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5377192B2 (en) 2009-09-25 2013-12-25 富士フイルム株式会社 Radiation imaging system and radiation detector self-diagnosis method
JP5788651B2 (en) 2010-08-27 2015-10-07 富士フイルム株式会社 Radiation imaging system
JP5670127B2 (en) 2010-08-27 2015-02-18 富士フイルム株式会社 Radiation imaging system and radiation imaging apparatus
JP5628103B2 (en) 2011-06-30 2014-11-19 富士フイルム株式会社 Radiation detector, radiographic imaging system, disconnection detection program, and disconnection detection method
JP5619039B2 (en) 2012-01-12 2014-11-05 富士フイルム株式会社 Radiography apparatus and radiation imaging system
JP6763185B2 (en) 2016-04-08 2020-09-30 コニカミノルタ株式会社 Radiation imaging equipment and radiation imaging system

Similar Documents

Publication Publication Date Title
US10441238B2 (en) Radiation imaging apparatus, control method thereof, and program
WO2016189849A1 (en) Radiation imaging apparatus, radiation imaging system, and exposure control method
JP2017009324A5 (en)
JP2016040880A5 (en)
JP2015227851A5 (en)
JP2013148873A5 (en)
JP2016118701A5 (en)
JP2016178230A5 (en)
JP6763185B2 (en) Radiation imaging equipment and radiation imaging system
US20140284491A1 (en) Radiation image pickup system
JP2016038415A5 (en) Image processing apparatus, image processing method, program, and storage medium
JP2019024589A5 (en)
JP2016036115A5 (en)
JP4640136B2 (en) X-ray diagnostic equipment
WO2015079525A1 (en) Radiographic imaging device
JP2017538470A5 (en)
JP2011019591A (en) X-ray equipment, interpolating method of lost pixel in x-ray detector, and method of creating deficit map in x-ray detector
JP2014094179A5 (en)
US10616500B2 (en) Image pickup apparatus that uses imaging area having better characteristics, and method of adjusting the same
WO2012063265A9 (en) Method and apparatus for detecting the bad pixels in sensor array and concealing the error
EP3692919B1 (en) Radiation imaging apparatus, radiation imaging system, and method of controlling radiation imaging apparatus
JP2011167329A (en) Method for detecting deficient pixel in two-dimensional array x-ray detector, and device for detecting deficient pixel
US10136874B2 (en) X-ray imaging apparatus
JP7000728B2 (en) Radiation imaging equipment and radiation imaging system
JP2018066982A5 (en)