JP2003279411A5 - - Google Patents
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- JP2003279411A5 JP2003279411A5 JP2002084222A JP2002084222A JP2003279411A5 JP 2003279411 A5 JP2003279411 A5 JP 2003279411A5 JP 2002084222 A JP2002084222 A JP 2002084222A JP 2002084222 A JP2002084222 A JP 2002084222A JP 2003279411 A5 JP2003279411 A5 JP 2003279411A5
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- bright spot
- center
- light receiving
- photon counting
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Claims (7)
前記蛍光を受光する複数の受光素子が２次元状に配列された受光素子アレイと、
前記受光素子アレイの所定列に対応して設けられ、対応する列中の前記受光素子から順次読み出された出力信号をアナログ・デジタル変換する複数のＡ／Ｄ変換器が、並列されたＡ／Ｄ変換器アレイと、
前記Ａ／Ｄ変換器から受信した前記各受光素子の出力信号に相当するデジタル信号に対して平滑化処理を施し、前記各受光素子の配列に関連付けられた、前記蛍光における輝点の強度に関する輝度データを算出する輝度データ算出部と、
前記輝度データに基づいて、前記受光素子の配列に関連付けられた、前記蛍光における前記輝点の中心位置を算出する輝点中心算出部と、
前記輝度データに基づいて、前記輝点の前記中心位置と前記輝点の重心位置との差に関する重心情報を算出する重心情報算出部と、
を備えることを特徴とするフォトンカウンティング装置。A photon counting device for imaging fluorescence of a phosphor,
A light receiving element array in which a plurality of light receiving elements for receiving the fluorescence are two-dimensionally arranged;
A plurality of A / D converters provided corresponding to predetermined columns of the light receiving element array and performing analog / digital conversion on output signals sequentially read from the light receiving elements in the corresponding columns are provided in parallel A / D converters. A D converter array;
Luminance related to the intensity of the bright spot in the fluorescence associated with the array of the light receiving elements, which is subjected to smoothing processing on a digital signal corresponding to the output signal of the light receiving elements received from the A / D converter A luminance data calculation unit for calculating data;
A bright spot center calculation unit that calculates a center position of the bright spot in the fluorescence, which is associated with the array of the light receiving elements based on the luminance data;
Based on the luminance data, a center-of-gravity information calculation unit that calculates center-of-gravity information regarding a difference between the center position of the bright spot and the barycentric position of the bright spot;
A photon counting device comprising:
前記重心情報算出部は、前記輝度データ算出部で算出された前記輝度データのうち輝度が所定の基準値より大きいもののみに基づいて、前記重心情報を算出することを特徴とする請求項１記載のフォトンカウンティング装置。The bright spot center calculation unit calculates a center position of the bright spot based only on the brightness data calculated by the brightness data calculation unit based on a brightness greater than a predetermined reference value,
The center-of-gravity information calculation unit calculates the center-of-gravity information based on only the luminance data calculated by the luminance data calculation unit that has a luminance greater than a predetermined reference value. Photon counting device.
前記中心位置と前記差とに基づいて、前記輝点の前記重心位置を算出する輝点重心算出部を更に備えることを特徴とする請求項１又は請求項２記載のフォトンカウンティング装置。Based on the barycentric information calculated by the barycentric information calculating unit, the difference between the center position of the bright spot and the barycentric position of the bright spot is obtained,
3. The photon counting device according to claim 1, further comprising a bright spot centroid calculating unit that calculates the centroid position of the bright spot based on the center position and the difference.
前記重心情報算出部で算出された重心情報に基づいて、前記輝点の前記中心位置と前記輝点の前記重心位置との前記差を求め、前記中心位置と前記差とに基づいて、前記輝点の前記重心位置を算出する輝点重心算出部と、
前記重心位置をその座標として前記輝点を表示させる出力表示部と、
を備えることを特徴とするフォトンカウンティングシステム。The photon counting device according to claim 1 or 2,
Based on the centroid information calculated by the centroid information calculation unit, the difference between the center position of the bright spot and the centroid position of the bright spot is obtained, and based on the center position and the difference, the bright spot is calculated. A bright spot centroid calculating unit for calculating the centroid position of the point;
An output display unit that displays the bright spot using the center of gravity position as its coordinates;
A photon counting system comprising:
複数の受光素子が２次元状に配列された受光素子アレイによって、前記蛍光を受光するステップと、
前記受光素子アレイの所定列から順次読み出された出力信号をアナログ・デジタル変換するステップと、
前記アナログ・デジタル変換された前記各受光素子の出力信号に相当するデジタル信号に対して平滑化処理を施し、前記各受光素子の配列に関連付けられた、前記蛍光における輝点の強度に関する輝度データを算出するステップと、
前記輝度データに基づいて、前記受光素子の配列に関連付けられた、前記蛍光における前記輝点の中心位置を算出するステップと、
前記輝度データに基づいて、前記輝点の前記中心位置と前記輝点の重心位置との差に関する重心情報を算出するステップと、
前記重心情報に基づいて、前記輝点の前記中心位置と前記輝点の前記重心位置との前記差を求めるステップと、
前記中心位置と前記差とに基づいて、前記輝点の前記重心位置を算出するステップと、
前記重心位置をその座標として前記輝点を表示させるステップと、
を含むことを特徴とするフォトンカウンティング方法。A photon counting method for imaging fluorescence of a phosphor,
Receiving the fluorescence by a light receiving element array in which a plurality of light receiving elements are arranged two-dimensionally;
Analog-to-digital conversion of output signals sequentially read from predetermined columns of the light receiving element array;
Smoothing processing is performed on a digital signal corresponding to the output signal of each light receiving element that has been converted from analog to digital, and luminance data relating to the intensity of a bright spot in the fluorescence associated with the array of the light receiving elements is obtained. A calculating step;
Calculating the center position of the bright spot in the fluorescence associated with the array of light receiving elements based on the luminance data;
Calculating center-of-gravity information related to the difference between the center position of the bright spot and the barycentric position of the bright spot based on the brightness data;
Obtaining the difference between the center position of the bright spot and the barycentric position of the bright spot based on the barycentric information;
Calculating the center of gravity position of the bright spot based on the center position and the difference;
Displaying the bright spot with the center of gravity position as its coordinates;
A photon counting method comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002084222A JP3958987B2 (en) | 2002-03-25 | 2002-03-25 | Photon counting system and photon counting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002084222A JP3958987B2 (en) | 2002-03-25 | 2002-03-25 | Photon counting system and photon counting method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2003279411A JP2003279411A (en) | 2003-10-02 |
| JP2003279411A5 true JP2003279411A5 (en) | 2005-09-22 |
| JP3958987B2 JP3958987B2 (en) | 2007-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002084222A Expired - Lifetime JP3958987B2 (en) | 2002-03-25 | 2002-03-25 | Photon counting system and photon counting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3958987B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2305270C2 (en) * | 2005-05-18 | 2007-08-27 | Андрей Алексеевич Климов | Fluorescent nanoscopy method (variants) |
| JP4851388B2 (en) | 2007-05-16 | 2012-01-11 | 浜松ホトニクス株式会社 | Imaging device |
| JP4985117B2 (en) | 2007-06-06 | 2012-07-25 | 株式会社ニコン | Image processing program and image processing apparatus |
| JP6546451B2 (en) * | 2015-06-01 | 2019-07-17 | キヤノン株式会社 | Radiation imaging apparatus, control method thereof and program |
| JP6573378B2 (en) | 2015-07-10 | 2019-09-11 | キヤノン株式会社 | Radiation imaging apparatus, control method thereof, and program |
| JP6643871B2 (en) | 2015-11-13 | 2020-02-12 | キヤノン株式会社 | Radiation imaging apparatus and photon counting method |
| JP6700828B2 (en) | 2016-02-10 | 2020-05-27 | キヤノン株式会社 | Radiation imaging apparatus, driving method thereof and imaging system |
| KR101870610B1 (en) * | 2017-05-24 | 2018-06-25 | 주식회사 센소니아 | Trigger circuit of x-ray photographing device improving stability to change in temperature with controlling reset peroid |
-
2002
- 2002-03-25 JP JP2002084222A patent/JP3958987B2/en not_active Expired - Lifetime
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