JP2005066041A5 - - Google Patents

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JP2005066041A5
JP2005066041A5 JP2003300325A JP2003300325A JP2005066041A5 JP 2005066041 A5 JP2005066041 A5 JP 2005066041A5 JP 2003300325 A JP2003300325 A JP 2003300325A JP 2003300325 A JP2003300325 A JP 2003300325A JP 2005066041 A5 JP2005066041 A5 JP 2005066041A5
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signal
elastic
tomographic
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被検体の診断部位を圧迫した際に体表に与えられた圧力の情報を取得するために超音波送受信面を覆うように圧計測用変形体手段を設けたことを特徴とする超音波探触子。 An ultrasonic probe characterized in that a deforming means for pressure measurement is provided so as to cover the ultrasonic wave transmitting / receiving surface in order to acquire information on the pressure applied to the body surface when the diagnostic region of the subject is pressed Child. 請求項１において、前記圧計測用変形体手段は、音響結合材料又は音響レンズ素材にて構成されたことを特徴とする超音波探触子。 2. The ultrasonic probe according to claim 1, wherein the pressure measuring deformable means is made of an acoustic coupling material or an acoustic lens material. 請求項１又は２の超音波探触子を用いて被検体に対して超音波を送信及び受信する超音波送受信手段と、
前記超音波の送信及び受信を制御する超音波送受信制御手段と、
前記超音波送受信手段から出力される反射エコー信号を用いて運動組織を含む被検体内のＲＦ信号フレームデータを所定周期で繰り返し取得する断層走査手段と、
前記断層走査手段によって取得された時系列の複数のＲＦ信号フレームデータの信号処理を行う信号処理手段と、
前記信号処理手段からの時系列の断層フレームデータを白黒断層像データに変換する断層フレームデータ情報変換手段と、
上記断層走査手段によって取得された時系列の複数のＲＦ信号フレームデータ群の中から、変位計測の対象となるＲＦ信号フレームデータの組を選択するＲＦ信号フレームデータ選択手段と、
前記ＲＦ信号フレームデータ選択手段によって選択されたＲＦ信号フレームデータの組に基づいて断層像上の各点の変位及び歪みを演算する変位・歪み演算手段と、
前記ＲＦ信号フレームデータ選択手段によって得られたＲＦ信号フレームデータの中に含まれる前記被検体及び前記圧計測用変形体手段からの超音波反射信号に基づいて前記被検体の診断部位の体表に与えられた圧力を演算する圧力演算手段と、
前記変位・歪み演算手段及び前記圧力演算手段によって求められた前記歪み及び圧力から断層像上の各点の弾性率を演算して弾性フレームデータを生成する弾性率演算手段と、
前記弾性率演算手段からの弾性フレームデータを入力して弾性フレームデータの信号処理を行う弾性データ処理手段と、
前記弾性データ処理手段からの弾性フレームデータを入力して色相情報もしくは白黒輝度情報の付与された弾性画像データを出力する弾性フレームデータ情報変換手段と、
前記断層フレームデータ情報変換手段からの前記白黒断層像データと、前記色相情報変換手段からの前記弾性画像データとを加算したもの又は独立したものを画像データとして出力する切替加算手段と、
前記切替加算手段から出力される画像データを表示する画像表示手段と
を備えたことを特徴とする超音波診断装置。 Ultrasonic transmission / reception means for transmitting and receiving ultrasonic waves to a subject using the ultrasonic probe of claim 1 or 2, and
Ultrasonic transmission / reception control means for controlling transmission and reception of the ultrasonic wave;
A tomographic scanning means for repeatedly acquiring RF signal frame data in a subject including a moving tissue at a predetermined period using a reflected echo signal output from the ultrasonic transmission / reception means;
Signal processing means for performing signal processing of a plurality of time-series RF signal frame data acquired by the tomographic scanning means;
Tomographic frame data information converting means for converting time-series tomographic frame data from the signal processing means into monochrome tomographic image data;
RF signal frame data selection means for selecting a set of RF signal frame data to be subjected to displacement measurement from a plurality of time-series RF signal frame data groups acquired by the tomographic scanning means;
Displacement / distortion calculation means for calculating the displacement and distortion of each point on the tomogram based on the set of RF signal frame data selected by the RF signal frame data selection means;
Based on the ultrasonic reflection signals from the subject and the pressure measuring deformation means included in the RF signal frame data obtained by the RF signal frame data selection means, the body surface of the diagnosis part of the subject is displayed. Pressure calculating means for calculating a given pressure;
Elastic modulus calculation means for calculating elastic modulus data of each point on a tomogram from the strain and pressure determined by the displacement / strain calculation means and the pressure calculation means;
Elastic data processing means for inputting elastic frame data from the elastic modulus calculation means and performing signal processing of elastic frame data;
Elastic frame data information converting means for inputting elastic frame data from the elastic data processing means and outputting elastic image data to which hue information or monochrome luminance information is added;
Switching addition means for outputting the black-and-white tomographic image data from the tomographic frame data information conversion means and the elastic image data from the hue information conversion means or an independent one as image data;
An ultrasonic diagnostic apparatus comprising: image display means for displaying image data output from the switching addition means. 超音波探触子を用いて被検体に対して超音波を送信及び受信する超音波送受信手段と、
前記超音波の送信及び受信を制御する超音波送受信制御手段と、
前記超音波探触子と前記被検体との間に設けられた適切な弾性を有する圧計測用変形体手段と、
前記超音波送受信手段から出力される反射エコー信号を用いて運動組織を含む被検体内のＲＦ信号フレームデータを所定周期で繰り返し取得する断層走査手段と、
前記断層走査手段によって取得された時系列の複数のＲＦ信号フレームデータの信号処理を行う信号処理手段と、
前記信号処理手段からの時系列の断層フレームデータを白黒断層像データに変換する断層フレームデータ情報変換手段と、
上記断層走査手段によって取得された時系列の複数のＲＦ信号フレームデータ群の中から、変位計測の対象となるＲＦ信号フレームデータの組を選択するＲＦ信号フレームデータ選択手段と、
前記ＲＦ信号フレームデータ選択手段によって選択されたＲＦ信号フレームデータの組に基づいて断層像上の各点の変位及び歪みを演算する変位・歪み演算手段と、
前記ＲＦ信号フレームデータ選択手段によって得られたＲＦ信号フレームデータの中に含まれる前記被検体及び前記圧計測用変形体手段からの超音波反射信号に基づいて前記被検体の診断部位の体表に与えられた圧力を演算する圧力演算手段と、
前記変位・歪み演算手段及び前記圧力演算手段によって求められた前記歪み及び圧力から断層像上の各点の弾性率を演算して弾性フレームデータを生成する弾性率演算手段と、
前記弾性率演算手段からの弾性フレームデータを入力して弾性フレームデータの信号処理を行う弾性データ処理手段と、
前記弾性データ処理手段からの弾性フレームデータを入力して色相情報もしくは白黒輝度情報の付与された弾性画像データを出力する弾性フレームデータ情報変換手段と、
前記断層フレームデータ情報変換手段からの前記白黒断層像データと、前記色相情報変換手段からの前記弾性画像データとを加算したもの又は独立したものを画像データとして出力する切替加算手段と、
前記切替加算手段から出力される画像データを表示する画像表示手段と
を備えたことを特徴とする超音波診断装置。 Ultrasonic transmission / reception means for transmitting and receiving ultrasonic waves to the subject using an ultrasonic probe; and
Ultrasonic transmission / reception control means for controlling transmission and reception of the ultrasonic wave;
A pressure measuring deformation means having appropriate elasticity provided between the ultrasonic probe and the subject;
A tomographic scanning means for repeatedly acquiring RF signal frame data in a subject including a moving tissue at a predetermined period using a reflected echo signal output from the ultrasonic transmission / reception means;
Signal processing means for performing signal processing of a plurality of time-series RF signal frame data acquired by the tomographic scanning means;
Tomographic frame data information converting means for converting time-series tomographic frame data from the signal processing means into monochrome tomographic image data;
RF signal frame data selection means for selecting a set of RF signal frame data to be subjected to displacement measurement from a plurality of time-series RF signal frame data groups acquired by the tomographic scanning means;
Displacement / distortion calculation means for calculating the displacement and distortion of each point on the tomogram based on the set of RF signal frame data selected by the RF signal frame data selection means;
Based on the ultrasonic reflection signals from the subject and the pressure measuring deformation means included in the RF signal frame data obtained by the RF signal frame data selection means, the body surface of the diagnosis part of the subject is displayed. Pressure calculating means for calculating a given pressure;
Elastic modulus calculation means for calculating elastic modulus data of each point on a tomogram from the strain and pressure determined by the displacement / strain calculation means and the pressure calculation means;
Elastic data processing means for inputting elastic frame data from the elastic modulus calculation means and performing signal processing of elastic frame data;
Elastic frame data information converting means for inputting elastic frame data from the elastic data processing means and outputting elastic image data to which hue information or monochrome luminance information is added;
Switching addition means for outputting the black-and-white tomographic image data from the tomographic frame data information conversion means and the elastic image data from the hue information conversion means or an independent one as image data;
An ultrasonic diagnostic apparatus comprising: image display means for displaying image data output from the switching addition means. 請求項４において、前記圧計測用変形体手段は、音響結合材料又は音響レンズ素材にて構成されたことを特徴とする超音波診断装置。 5. The ultrasonic diagnostic apparatus according to claim 4, wherein the pressure measuring deformable means is made of an acoustic coupling material or an acoustic lens material. 請求項３、４又は５において、前記圧力演算手段は、前記ＲＦ信号フレームデータ選択手段により得られた前記圧計測用変形体手段の信号を含む前記ＲＦ信号フレームデータ又は前記断層走査手段により得られた前記圧計測用変形体手段の信号を含む前記白黒断層像データを利用して前記圧計測用変形体手段における歪み量を求め、前記圧計測用変形体手段における歪み量と前記圧計測用変形体手段の既知の弾性率とを用いて、前記被検体の診断部位を圧迫した際に体表に与えられた圧力を演算することを特徴とする超音波診断装置。 6. The pressure calculation means according to claim 3, wherein the pressure calculation means is obtained by the RF signal frame data including the signal of the pressure measuring deformation means obtained by the RF signal frame data selection means or by the tomographic scanning means. Using the black and white tomographic image data including the signal of the pressure measuring deformable means, the amount of strain in the pressure measuring deformable means is obtained, and the amount of strain in the pressure measuring deformable means and the deformation for pressure measuring are obtained. An ultrasonic diagnostic apparatus characterized in that, using a known elastic modulus of a body means, a pressure applied to a body surface when a diagnostic region of the subject is compressed is calculated. 請求項３、４又は５において、前記圧力演算手段は、前記ＲＦ信号フレームデータ選択手段により得られた前記圧計測用変形体手段の信号を含む前記ＲＦ信号フレームデータ又は前記断層走査手段により得られた前記圧計測用変形体手段の信号を含む前記白黒断層像データを利用して前記圧計測用変形体手段の厚さを求め、前記圧計測用変形体手段の厚さと前記圧計測用変形体手段の既知の弾性率とを用いて、前記被検体の診断部位を圧迫した際に体表に与えられた圧力を演算することを特徴とする超音波診断装置。 6. The pressure calculation means according to claim 3, wherein the pressure calculation means is obtained by the RF signal frame data including the signal of the pressure measuring deformation means obtained by the RF signal frame data selection means or by the tomographic scanning means. The thickness of the pressure measuring deformable means is obtained using the monochrome tomographic image data including the signal of the pressure measuring deformable means, and the thickness of the pressure measuring deformable means and the pressure measuring deformable body. An ultrasonic diagnostic apparatus characterized in that a pressure applied to a body surface when a diagnostic region of the subject is compressed is calculated using a known elastic modulus of the means. 請求項３、４又は５において、前記圧力演算手段は、前記ＲＦ信号フレームデータ選択手段により得られた前記圧計測用変形体手段の信号を含む前記ＲＦ信号フレームデータ又は前記断層走査手段により得られた前記圧計測用変形体手段の信号を含む前記白黒断層像データを利用して前記圧計測用変形体手段の厚さを求め、前記圧計測用変形体手段の厚さと圧力の関係を示す実測データに基づいて、前記被検体の診断部位を圧迫した際に体表に与えられた圧力を演算することを特徴とする超音波診断装置。 6. The pressure calculation means according to claim 3, wherein the pressure calculation means is obtained by the RF signal frame data including the signal of the pressure measuring deformation means obtained by the RF signal frame data selection means or by the tomographic scanning means. Further, the thickness of the pressure measuring deformable means is obtained using the black and white tomographic image data including the signal of the pressure measuring deformable means, and an actual measurement showing the relationship between the thickness of the pressure measuring deformable means and the pressure. An ultrasonic diagnostic apparatus characterized in that, based on data, a pressure applied to a body surface when a diagnostic region of the subject is compressed is calculated.
JP2003300325A 2003-08-25 2003-08-25 Ultrasonic probe and ultrasonic diagnostic equipment Pending JP2005066041A (en)

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