JP4928989B2 - 超音波診断装置および超音波診断装置の制御プログラム - Google Patents
超音波診断装置および超音波診断装置の制御プログラム Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/13—Tomography
- A61B8/14—Echo-tomography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/06—Measuring blood flow
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/48—Diagnostic techniques
- A61B8/481—Diagnostic techniques involving the use of contrast agent, e.g. microbubbles introduced into the bloodstream
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/48—Diagnostic techniques
- A61B8/483—Diagnostic techniques involving the acquisition of a 3D volume of data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
- G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
- G01S15/895—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques characterised by the transmitted frequency spectrum
- G01S15/8954—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques characterised by the transmitted frequency spectrum using a broad-band spectrum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
- G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
- G01S15/8959—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using coded signals for correlation purposes
- G01S15/8961—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using coded signals for correlation purposes using pulse compression
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
- G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
- G01S15/8979—Combined Doppler and pulse-echo imaging systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
- G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
- G01S15/8979—Combined Doppler and pulse-echo imaging systems
- G01S15/8988—Colour Doppler imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52023—Details of receivers
- G01S7/52025—Details of receivers for pulse systems
- G01S7/52026—Extracting wanted echo signals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52023—Details of receivers
- G01S7/52036—Details of receivers using analysis of echo signal for target characterisation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52053—Display arrangements
- G01S7/52057—Cathode ray tube displays
- G01S7/5206—Two-dimensional coordinated display of distance and direction; B-scan display
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52053—Display arrangements
- G01S7/52057—Cathode ray tube displays
- G01S7/52071—Multicolour displays; using colour coding; Optimising colour or information content in displays, e.g. parametric imaging
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- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Pathology (AREA)
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- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
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- Biomedical Technology (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biophysics (AREA)
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Description
[数1]
At=2β・f0・z=1 (dB/MHz/cm)×2.5 (MHz)×10 (cm)×2 (往復)=50dB (1)
スペクトラルモーメント法を用いてリアルタイムで周波数依存減衰係数βを測定する方法も考案されている(例えば特許文献4参照)。
2 送信回路
3 プローブ
4、4A 受信回路
5 FDA計測部
6 Bモード処理系
7 カラードプラ処理系
8 座標変換回路
9 モニタ
10 制御回路
20 プリアンプ
21 ディジタルビームフォーマ
22 ゲイン補正回路
23 直交検波回路
24 バンドパスフィルタ
25 包絡線検波部
26 ラインバッファ
27 時間差検出回路
28 スムージング回路
29 FDA計算回路
30 パルス圧縮回路
40 受信用ラインバッファ
50 減算回路
Claims (8)
- 時間と共に周波数が増加する第1の送信パルスおよび時間と共に周波数が減少する第2の送信パルスを送信し、前記第1の送信パルスに対する第1の受信信号および前記第2の送信パルスに対する第2の受信信号を取得する送受信するパルス送受信手段と、
前記第1の受信信号から第1の包絡線を、前記第2の受信信号から第2の包絡線をそれぞれ検出する包絡線検出手段と、
前記第1の包絡線および前記第2の包絡線の時間差を検出する時間差検出手段と、
前記時間差から超音波の周波数依存減衰特性を取得する減衰取得手段と、
を有することを特徴とする超音波診断装置。 - 前記パルス送受信手段は、前記第1の送信パルスとして包絡線がガウス波形のアップチャープ信号を、前記第2の送信パルスとして包絡線がガウス波形のダウンチャープ信号を用いるように構成されることを特徴とする請求項1記載の超音波診断装置。
- 前記第1の受信信号および前記第2の受信信号のパルス圧縮を行うパルス圧縮手段をさらに備えることを特徴とする請求項1記載の超音波診断装置。
- 前記パルス送受信手段は、前記第1の送信パルスおよび前記第2の送信パルスを3次元的に送信するように構成される一方、前記減衰取得手段は、前記周波数依存減衰特性を3次元分布として取得するように構成されることを特徴とする請求項1記載の超音波診断装置。
- 前記周波数依存減衰特性を利用して前記第1の受信信号および前記第2の受信信号の直交検波に用いるミキシング周波数、前記第1の受信信号および前記第2の受信信号に掛けるフィルタの特性並びに前記第1の受信信号および前記第2の受信信号の振幅の少なくとも1つを補正する補正手段をさらに備えることを特徴とする請求項1または2記載の超音波診断装置。
- 前記周波数依存減衰特性を利用してドプラ信号から得られる速度の補正を行う速度補正手段をさらに備えることを特徴とする請求項1記載の超音波診断装置。
- 前記周波数依存減衰特性を利用して前記第1の受信信号および前記第2の受信信号の振幅を補正する補正手段と、
前記第1の受信信号および前記第2の受信信号のパルス圧縮を行うパルス圧縮手段と、
前記パルス圧縮後の前記第1の受信信号および前記第2の受信信号間の一方から他方を減算することによって超音波造影剤からの造影信号を抽出する造影信号抽出手段と、
をさらに備えることを特徴とする請求項1記載の超音波診断装置。 - コンピュータを、
プローブに印加するための、時間と共に周波数が増加する第1の送信パルスおよび時間と共に周波数が減少する第2の送信パルスを生成するパルス生成手段、
前記第1の送信パルスに対する第1の受信信号から第1の包絡線を、前記第2の送信パルスに対する第2の受信信号から第2の包絡線をそれぞれ検出する包絡線検出手段、
前記第1の包絡線および前記第2の包絡線の時間差を検出する時間差検出手段、および
前記時間差から超音波の周波数依存減衰特性を取得する減衰取得手段、
として機能させることを特徴とする超音波診断装置の制御プログラム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2007057314A JP4928989B2 (ja) | 2007-03-07 | 2007-03-07 | 超音波診断装置および超音波診断装置の制御プログラム |
DE602008000490T DE602008000490D1 (de) | 2007-03-07 | 2008-03-05 | Ultraschallvorrichtung |
EP08004082A EP1967866B1 (en) | 2007-03-07 | 2008-03-05 | Ultrasonic appratus |
US12/043,681 US8021302B2 (en) | 2007-03-07 | 2008-03-06 | Ultrasonic apparatus and ultrasonic diagnostic method |
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JP2007057314A JP4928989B2 (ja) | 2007-03-07 | 2007-03-07 | 超音波診断装置および超音波診断装置の制御プログラム |
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JP2008212542A JP2008212542A (ja) | 2008-09-18 |
JP4928989B2 true JP4928989B2 (ja) | 2012-05-09 |
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EP (1) | EP1967866B1 (ja) |
JP (1) | JP4928989B2 (ja) |
DE (1) | DE602008000490D1 (ja) |
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JP5114609B2 (ja) * | 2011-03-31 | 2013-01-09 | オリンパスメディカルシステムズ株式会社 | 超音波観測装置および超音波観測装置の作動方法および超音波観測装置の作動プログラム |
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US7405613B2 (en) * | 2005-04-06 | 2008-07-29 | Integration Associates Inc. | Differential slope demodulator for low-IF frequencies |
EP1739455A1 (en) | 2005-06-23 | 2007-01-03 | I.N.S.E.R.M. Institut National de la Sante et de la Recherche Medicale | Chirp reversal ultrasound contrast imaging |
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2007
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US8021302B2 (en) | 2011-09-20 |
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EP1967866B1 (en) | 2010-01-06 |
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