JP2014239842A5 - - Google Patents
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- JP2014239842A5 JP2014239842A5 JP2013124171A JP2013124171A JP2014239842A5 JP 2014239842 A5 JP2014239842 A5 JP 2014239842A5 JP 2013124171 A JP2013124171 A JP 2013124171A JP 2013124171 A JP2013124171 A JP 2013124171A JP 2014239842 A5 JP2014239842 A5 JP 2014239842A5
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- 238000003384 imaging method Methods 0.000 claims 55
- 238000009825 accumulation Methods 0.000 claims 13
- 230000001360 synchronised Effects 0.000 claims 5
- 238000006243 chemical reaction Methods 0.000 claims 3
- 238000007781 pre-processing Methods 0.000 claims 2
Claims (20)
前記X線発生手段と前記X線撮影手段との間でX線発生のタイミングと前記X線撮影手段の駆動タイミングとを同期するための通信が行われるか否かを判定する判定手段と、
前記判定に応じて前記画像撮影手段の駆動方法を設定する設定手段と、
を備えることを特徴とするX線画像撮影装置。 An X-ray imaging apparatus having an X-ray generation means for generating X-rays and an X-ray imaging means having an image imaging means for imaging the X-ray image, wherein the X-ray imaging means includes:
A determination unit that determines whether or not communication is performed between the X-ray generation unit and the X-ray imaging unit to synchronize the timing of X-ray generation and the drive timing of the X-ray imaging unit;
Setting means for setting a driving method of the image photographing means according to the determination;
An X-ray imaging apparatus comprising:
前記X線発生手段に対して、前記通信が行われるか否かを判定するための判定信号を送信し、前記判定信号に対する応答信号を前記X線発生手段から受信した場合、前記X線発生手段と前記X線撮影手段とは同期した通信が行われる接続状態であると判定し、
前記判定信号に対する応答信号を前記X線発生手段から受信しない場合、前記X線発生手段と前記X線撮影手段とは非同期の通信が行われる接続状態であると判定することを特徴とする請求項1に記載のX線画像撮影装置。 The determination means includes
When the determination signal for determining whether or not the communication is performed is transmitted to the X-ray generation unit, and the response signal for the determination signal is received from the X-ray generation unit, the X-ray generation unit And the X-ray imaging means are determined to be in a connection state in which synchronized communication is performed,
The X-ray generation unit and the X-ray imaging unit are determined to be in a connection state in which asynchronous communication is performed when a response signal to the determination signal is not received from the X-ray generation unit. The X-ray imaging apparatus according to 1.
前記設定手段は、前記変換素子に前記電荷の蓄積を開始するタイミング、および前記変換素子に蓄積された前記電荷の読み出しを開始するタイミングのうち、少なくともいずれか一方のタイミングを変更して前記蓄積時間を設定することを特徴とする請求項3または4に記載のX線画像撮影装置。 The image photographing means has a sensor array in which a plurality of conversion elements that convert the X-rays into electric charges are arranged,
The setting means changes the accumulation time by changing at least one of a timing for starting accumulation of the charge in the conversion element and a timing for starting reading of the charge accumulated in the conversion element. The X-ray image photographing apparatus according to claim 3 or 4, wherein:
前記非同期の通信が行われる接続状態で、複数の暗電流画像を取得する取得手段と、
前記複数の暗電流画像の電荷と前記X線の照射時の電荷とを比較して、暗電流の電荷の蓄積時において、前記X線が照射されているか否かを判定する電荷判定手段と、
前記X線が照射されている場合、前記暗電流の電荷の蓄積時の画像をX線画像として処理する処理手段と、を更に備えることを特徴とする請求項2乃至6のいずれか1項に記載のX線画像撮影装置。 The X-ray imaging means includes
An acquisition means for acquiring a plurality of dark current images in a connection state in which the asynchronous communication is performed;
A charge determination unit that compares the charges of the plurality of dark current images with the charges at the time of irradiation with the X-rays and determines whether or not the X-rays are irradiated at the time of accumulation of dark current charges;
The processing unit according to any one of claims 2 to 6, further comprising processing means for processing an image at the time of accumulation of the dark current charge as an X-ray image when the X-ray is irradiated. The X-ray imaging apparatus described.
被写体の撮影部位を選択する選択手段と、
前記撮影部位に応じたX線の照射量を判定する照射量判定手段と、
を更に備え、
前記設定手段は、前記判定の結果と、前記X線の照射量の判定結果と、を用いて前記画像撮影手段の駆動方法を設定することを特徴とする請求項2乃至7のいずれか1項に記載のX線画像撮影装置。 The X-ray imaging means includes
A selection means for selecting an imaging region of the subject;
A dose determining means for determining a dose of X-rays according to the imaging region;
Further comprising
The said setting means sets the drive method of the said image pick-up means using the determination result and the determination result of the said X-ray irradiation amount, The any one of Claim 2 thru | or 7 characterized by the above-mentioned. An X-ray imaging apparatus described in 1.
前記設定手段は、前記非同期の通信が行われる接続状態における前記画像撮影手段の蓄積時間を、前記同期した通信が行われる接続状態における前記画像撮影手段の蓄積時間よりも短く設定することを特徴とする請求項8に記載のX線画像撮影装置。 When the determination result is a connection state in which asynchronous communication is performed, and the determination result of the X-ray dose is equal to or higher than a threshold X-ray dose,
The setting means sets the accumulation time of the image photographing means in the connection state where the asynchronous communication is performed shorter than the accumulation time of the image photographing means in the connection state where the synchronous communication is performed. The X-ray imaging apparatus according to claim 8.
前記画像撮影手段の駆動方法により撮影されたX線画像から暗電流画像の差分をとることにより、前記X線画像を補正する前処理手段を更に備えることを特徴とする請求項2乃至9のいずれか1項に記載のX線画像撮影装置。 The X-ray imaging means includes
10. A preprocessing unit for correcting the X-ray image by taking a difference between dark current images from an X-ray image captured by the driving method of the image capturing unit. The X-ray imaging apparatus of Claim 1.
前記画像撮影手段の駆動方法により撮影されたX線画像に対して画像処理を行う画像処理手段を更に備えることを特徴とする請求項2乃至11のいずれか1項に記載のX線画像撮影装置。 The X-ray imaging means includes
The X-ray image capturing apparatus according to claim 2, further comprising an image processing unit that performs image processing on an X-ray image captured by the driving method of the image capturing unit. .
前記X線撮影手段にX線が照射されたことを示す信号を出力する出力手段と、
前記信号に応じて前記画像撮影手段の駆動方法を設定する設定手段と、
を備えることを特徴とするX線画像撮影装置。 An X-ray imaging apparatus having an X-ray generation means for generating X-rays and an X-ray imaging means having an image imaging means for imaging the X-ray image, wherein the X-ray imaging means includes:
Output means for outputting a signal indicating that the X-ray imaging means is irradiated with X-rays;
Setting means for setting a driving method of the image photographing means according to the signal;
An X-ray imaging apparatus comprising:
前記信号の時間変化を算出する算出手段を有し、
前記算出の結果に応じて、前記画像撮影手段の蓄積時間を設定することを特徴とする請求項14に記載のX線画像撮影装置。 The setting means includes
Calculating means for calculating a time change of the signal;
The X-ray imaging apparatus according to claim 14, wherein an accumulation time of the imaging unit is set according to the calculation result.
前記信号の閾値に応じて前記蓄積時間を設定することを特徴とする請求項15に記載のX線画像撮影装置。 The setting means includes
The X-ray imaging apparatus according to claim 15, wherein the accumulation time is set according to a threshold value of the signal.
前記X線撮影手段の判定手段が、前記X線発生手段と前記X線撮影手段との間でX線発生のタイミングと前記X線撮影手段の駆動タイミングとを同期するための通信が行われるか否かを判定する判定工程と、
前記X線撮影手段の設定手段が、前記判定に応じて前記画像撮影手段の駆動方法を設定する設定工程と、
を有することを特徴とするX線画像撮影装置の制御方法。 A control method for an X-ray imaging apparatus, comprising: an X-ray generation unit that generates X-rays;
Whether the determination unit of the X-ray imaging unit communicates between the X-ray generation unit and the X-ray imaging unit to synchronize the timing of X-ray generation and the drive timing of the X-ray imaging unit A determination step of determining whether or not,
A setting step in which the setting unit of the X-ray imaging unit sets a driving method of the image imaging unit according to the determination;
A control method for an X-ray imaging apparatus, comprising:
前記X線撮影手段の判定手段が、前記X線撮影手段のバイアス信号を判定する判定工程と、
前記X線撮影手段の設定手段が、前記判定に応じて前記画像撮影手段の駆動方法を設定する設定工程と、
を有することを特徴とするX線画像撮影装置の制御方法。 A control method for an X-ray imaging apparatus, comprising: an X-ray generation unit that generates X-rays;
A determination step in which a determination unit of the X-ray imaging unit determines a bias signal of the X-ray imaging unit;
A setting step in which the setting unit of the X-ray imaging unit sets a driving method of the image imaging unit according to the determination;
A control method for an X-ray imaging apparatus, comprising:
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JP2014239842A5 true JP2014239842A5 (en) | 2016-06-30 |
JP6257177B2 JP6257177B2 (en) | 2018-01-10 |
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JP5217156B2 (en) * | 2006-11-29 | 2013-06-19 | コニカミノルタエムジー株式会社 | Radiation imaging system |
JP5335313B2 (en) * | 2008-08-05 | 2013-11-06 | キヤノン株式会社 | X-ray imaging apparatus, X-ray imaging system, X-ray imaging control apparatus, control method, and program |
JP5428751B2 (en) * | 2009-10-23 | 2014-02-26 | コニカミノルタ株式会社 | Image processing apparatus and image processing system |
WO2013015266A1 (en) * | 2011-07-26 | 2013-01-31 | 富士フイルム株式会社 | Radiograph detection device and method for controlling same |
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