JP2006320464A5 - - Google Patents

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JP2006320464A5
JP2006320464A5 JP2005145166A JP2005145166A JP2006320464A5 JP 2006320464 A5 JP2006320464 A5 JP 2006320464A5 JP 2005145166 A JP2005145166 A JP 2005145166A JP 2005145166 A JP2005145166 A JP 2005145166A JP 2006320464 A5 JP2006320464 A5 JP 2006320464A5
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radiation
effective energy
creating
image
imaging apparatus
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Priority to CN2009101511126A priority patent/CN101632591B/en
Priority to CNB2006800167056A priority patent/CN100571634C/en
Priority to PCT/JP2006/309551 priority patent/WO2006123581A1/en
Priority to EP06732532A priority patent/EP1882449A4/en
Priority to US11/914,520 priority patent/US7876874B2/en
Publication of JP2006320464A publication Critical patent/JP2006320464A/en
Publication of JP2006320464A5 publication Critical patent/JP2006320464A5/ja
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被検体に対して周回しつつ放射線を照射する放射線源と、前記被検体を透過した前記放射線を検出する放射線検出器と、を有する放射線撮影装置であって、
前記放射線源より照射する放射線の実効エネルギーを可変制御する実効エネルギー制御手段と、
前記放射線源が前記被検体に対して前記実効エネルギーが異なる複数の放射線を照射する照射制御手段と、
を具備することを特徴とする放射線撮影装置。 A radiation imaging apparatus comprising: a radiation source that irradiates radiation while orbiting a subject; and a radiation detector that detects the radiation transmitted through the subject,
Effective energy control means for variably controlling the effective energy of radiation emitted from the radiation source;
Irradiation control means for irradiating the radiation source with a plurality of radiations having different effective energies to the subject ;
A radiation imaging apparatus comprising: 前記照射する放射線の実効エネルギーの高低に応じて照射範囲割合を変更する照射範囲割合変更手段、  Irradiation range ratio changing means for changing the irradiation range ratio according to the level of the effective energy of the radiation to be irradiated,
を更に具備することを特徴とする請求項１に記載の放射線撮影装置。The radiation imaging apparatus according to claim 1, further comprising: 前記照射する放射線の実効エネルギーの高低に応じて前記放射線源への入力電流量を変更する電流量変更手段、  Current amount changing means for changing the amount of input current to the radiation source according to the level of effective energy of the radiation to be irradiated;
を更に具備することを特徴とする請求項１に記載の放射線撮影装置。The radiation imaging apparatus according to claim 1, further comprising: 前記照射する放射線の実効エネルギーの高低に応じて前記放射線源の周回速度を変更する周回速度変更手段、  Orbital speed changing means for changing the orbital speed of the radiation source according to the level of effective energy of the radiation to be irradiated;
を更に具備することを特徴とする請求項１に記載の放射線撮影装置。The radiation imaging apparatus according to claim 1, further comprising: それぞれ異なる衝突角度の複数の衝突面を有するターゲットに電子線を衝突させることにより、前記放射線源から照射する放射線の実効エネルギーを可変制御することを特徴とする請求項２から請求項４のいずれかに記載の放射線撮影装置。  5. The effective energy of radiation irradiated from the radiation source is variably controlled by causing an electron beam to collide with a target having a plurality of collision surfaces with different collision angles. The radiation imaging apparatus described in 1. それぞれ異なる材質の複数のターゲット部材からなるターゲットに電子線を衝突させることにより、前記放射線源から照射する放射線の実効エネルギーを可変制御することを特徴とする請求項２から請求項４のいずれかに記載の放射線撮影装置。  The effective energy of radiation irradiated from the radiation source is variably controlled by causing an electron beam to collide with a target composed of a plurality of target members, each of which is made of a different material. The radiation imaging apparatus described. 前記放射線検出器は、それぞれ異なる感度の複数の放射線検出器を有することを特徴とする請求項２から請求項４のいずれかに記載の放射線撮影装置。  The radiation imaging apparatus according to claim 2, wherein the radiation detector includes a plurality of radiation detectors having different sensitivities. 被検体に対して周回しつつ放射線を照射する放射線源と、前記被検体を透過した前記放射線を検出する放射線検出器と、を有する放射線撮影装置であって、前記放射線源より照射する放射線の実効エネルギーを可変制御する実効エネルギー制御手段を備えた放射線撮影装置を用いて、前記実効エネルギーを変えて前記被検体を撮影して取得された複数の撮影像に基づいて画像処理を行う画像処理方法であって、  A radiation imaging apparatus, comprising: a radiation source that irradiates a subject while irradiating radiation; and a radiation detector that detects the radiation transmitted through the subject, wherein the radiation effective from the radiation source is effective. An image processing method for performing image processing based on a plurality of captured images acquired by imaging the subject by changing the effective energy using a radiation imaging apparatus including an effective energy control unit that variably controls energy. There,
前記照射した放射線の実効エネルギー毎に前記撮影像を作成する実効エネルギー別撮影像作成ステップと、  Creating a captured image by effective energy for creating the captured image for each effective energy of the irradiated radiation; and
前記実効エネルギー別撮影像作成ステップで作成した複数の撮影像に対して、前記実効エネルギー毎にそれぞれ異なる色を割り当てて複数の単色カラー撮影像を作成する単色カラー撮影像作成ステップと、  Monochromatic color photographic image creation step for creating a plurality of monochrome color photographic images by assigning different colors for each effective energy, for a plurality of photographic images created in the effective energy photographic image creation step,
前記複数の単色カラー撮影像を合成して合成カラー撮影像を作成する合成カラー撮影像作成ステップと、  A composite color photographic image creating step of creating a composite color photographic image by combining the plurality of monochrome color photographic images;
を具備することを特徴とする画像処理方法。An image processing method comprising: 前記実効エネルギー別撮影像作成ステップで作成した撮影像に対する補正処理の度合を、前記照射した放射線の実効エネルギーの高低に応じて変更する補正処理度合変更ステップ、  A correction processing degree changing step for changing the degree of correction processing for the captured image created in the captured image creation step for each effective energy according to the level of the effective energy of the irradiated radiation,
を更に具備することを特徴とする請求項８に記載の画像処理方法。The image processing method according to claim 8, further comprising: 前記実効エネルギー別撮影像作成ステップで作成した複数の撮影像に対して補間処理を行い前記照射した放射線の実効エネルギーとは異なる実効エネルギーに関する撮影像を作成する補間処理ステップ、  Interpolation processing step for creating a captured image related to effective energy different from the effective energy of the irradiated radiation by performing an interpolation process on a plurality of captured images created in the captured image creation step by effective energy,
を更に具備することを特徴とする請求項８に記載の画像処理方法。The image processing method according to claim 8, further comprising: 前記実効エネルギー別撮影像作成ステップで作成した複数の撮影像に基づいて処理撮影像を作成する処理撮影像作成ステップと、  A processed captured image creation step for creating a processed captured image based on a plurality of captured images created in the effective energy-based captured image creation step;
前記実効エネルギー別撮影像作成ステップで作成した複数の撮影像について前記処理撮影像との差分をそれぞれ算出して複数の差分撮影像を作成する差分撮影像作成ステップと、  A differential photographed image creating step for creating a plurality of differential photographed images by calculating differences from the processed photographed images for a plurality of photographed images created in the effective energy photographed image creating step,
前記複数の差分撮影像に対して、前記実効エネルギー毎にそれぞれ異なる色を割り当てて複数の差分単色カラー撮影像を作成する差分単色カラー撮影像作成ステップと、  A difference monochromatic color photographed image creating step of creating a plurality of difference monochrome color photographed images by assigning different colors for each of the effective energies for the plurality of difference photographed images,
前記複数の差分単色カラー撮影像を合成して差分合成カラー撮影像を作成する差分合成カラー撮影像作成ステップと、  A difference composite color photographed image creating step for creating a difference composite color photographed image by combining the plurality of difference single color photographed images;
を更に具備することを特徴とする請求項８に記載の画像処理方法。The image processing method according to claim 8, further comprising: 前記被検体の対応する位置毎に、前記実効エネルギー毎に異なる複数の撮影像を結合する結合ステップと、  A combining step of combining a plurality of different captured images for each effective energy for each corresponding position of the subject;
前記結合ステップで結合された撮影像に対して一括して処理を実行する一括処理ステップと、  A batch processing step for collectively performing processing on the captured images combined in the combining step;
を更に具備することを特徴とする請求項８に記載の画像処理方法。The image processing method according to claim 8, further comprising: 前記複数の差分撮影像の中から対応する各座標毎に絶対値が最大の座標値を選択して強調撮影像を作成する強調撮影像作成ステップ、  An enhanced photographed image creating step for creating an enhanced photographed image by selecting a coordinate value having the maximum absolute value for each corresponding coordinate from the plurality of difference photographed images,
を更に具備することを特徴とする請求項１１に記載の画像処理方法。The image processing method according to claim 11, further comprising:
JP2005145166A 2005-05-18 2005-05-18 Radiation imaging apparatus and image processing method Expired - Fee Related JP5042465B2 (en)

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JP2005145166A JP5042465B2 (en) 2005-05-18 2005-05-18 Radiation imaging apparatus and image processing method
EP06732532A EP1882449A4 (en) 2005-05-18 2006-05-12 Radiograph and image processing program
CNB2006800167056A CN100571634C (en) 2005-05-18 2006-05-12 Radiographic equipment
PCT/JP2006/309551 WO2006123581A1 (en) 2005-05-18 2006-05-12 Radiograph and image processing program
CN2009101511126A CN101632591B (en) 2005-05-18 2006-05-12 Radiograph and image processing program
US11/914,520 US7876874B2 (en) 2005-05-18 2006-05-12 Radiographing apparatus and image processing program

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