JP6425994B2 - 超音波診断装置 - Google Patents
超音波診断装置 Download PDFInfo
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- JP6425994B2 JP6425994B2 JP2014260011A JP2014260011A JP6425994B2 JP 6425994 B2 JP6425994 B2 JP 6425994B2 JP 2014260011 A JP2014260011 A JP 2014260011A JP 2014260011 A JP2014260011 A JP 2014260011A JP 6425994 B2 JP6425994 B2 JP 6425994B2
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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
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/54—Control of the diagnostic device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0207—Driving circuits
- B06B1/0215—Driving circuits for generating pulses, e.g. bursts of oscillations, envelopes
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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
- G01S7/52019—Details of transmitters
- G01S7/5202—Details of transmitters for pulse 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
- 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
- G01S7/52077—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 with means for elimination of unwanted signals, e.g. noise or interference
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/70—Specific application
- B06B2201/76—Medical, dental
-
- 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
- G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
- G01S15/8915—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array
-
- 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
- G01S7/52042—Details of receivers using analysis of echo signal for target characterisation determining elastic properties of the propagation medium or of the reflective target
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- General Physics & Mathematics (AREA)
- Radiology & Medical Imaging (AREA)
- Public Health (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Gynecology & Obstetrics (AREA)
- Mechanical Engineering (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Description
図1は、実施形態に係る超音波診断装置1の一例を示す概念的な構成図である。図1に示すように、超音波診断装置1は、超音波プローブ10、装置本体20、入力部30、表示部40を備えて構成される。
以下、図3および図4に示した等価回路に基づいて、駆動パルス発生部240の出力インピーダンスを制御する動作について説明する。
上述のようなスイッチング回路に入力される制御信号には、HighとLowのステータスがあり、各スイッチング素子は「High」の場合にオンの状態になり、「Low」の場合にオフの状態になる。AND回路は、入力された2つの信号がすべて「High」の場合のみ「High」の信号を出力する。
10 超音波プローブ
20 装置本体
30 入力部
40 表示部
100 振動子
200 制御部
210 基準パルス発生部
220 遅延制御部
230 送信制御部
240 駆動パルス発生部
250 受信回路
260 画像生成部
Claims (6)
- 独立した複数のチャネルに対応する複数の振動子から被検体内に超音波を送信し、前記被検体内部で生じる反射波を前記振動子で受信する超音波診断装置であって、
前記複数のチャネルの各チャネルが、前記超音波を送信する送信チャネル、又は、前記超音波を送信しない非送信チャネルとなるように制御する送信制御部と、
二端のうち一方端側が接地された駆動パルス発生源と、前記駆動パルス発生源の他方端側に接続されると共に振動子に接続された抵抗とを備え、前記駆動パルス発生源と前記抵抗と前記振動子とが直列に接続され、前記振動子から前記超音波を送信するための駆動パルスを前記振動子に印加する駆動パルス発生部と、
を備え、
前記送信処理部は、
前記駆動パルス発生源を介して前記抵抗を接地させることで前記非送信チャネルに対応する前記駆動パルス発生部の出力インピーダンスが低インピーダンスになるように制御する一方で、前記抵抗の抵抗値により前記送信チャネルに対応する前記駆動パルス発生部の出力インピーダンスが高インピーダンスになるように制御し、
前記振動子から見たときの前記駆動パルス発生部の出力インピーダンスを、前記振動子から前記被検体内に前記超音波を送信する送信期間中は、前記被検体内部で生じる前記反射波を前記振動子で受信する受信期間中よりも低インピーダンスに設定する、
ことを特徴とする超音波診断装置。 - 前記駆動パルス発生部の前記出力インピーダンスは、前記受信期間中のすべてのチャネルにおいて受信回路よりも高インピーダンスに設定される、
ことを特徴とする請求項1に記載の超音波診断装置。 - 前記送信制御部は、前記駆動パルスを形成するための制御信号と、前記送信期間と前記受信期間とを区別する制御信号とを生成する、
ことを特徴とする請求項1または2に記載の超音波診断装置。 - 前記抵抗は、逆並列ダイオードに並列に接続され、前記低インピーダンスと前記高インピーダンスとの切り替えによるスイッチングノイズが前記振動子および前記受信回路に伝達されるのを抑制する、
ことを特徴とする請求項1に記載の超音波診断装置。 - 前記抵抗は、低電圧期間に前記逆並列ダイオードにより発生する送信パルス波形のひずみを抑制する、
ことを特徴とする請求項4に記載の超音波診断装置。 - 前記送信処理部は、超音波プローブの開口幅に応じて、前記各チャネルが前記送信チャネル又は前記非送信チャネルとなるように制御する、
ことを特徴とする請求項1に記載の超音波診断装置。
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JP2014260011A JP6425994B2 (ja) | 2014-12-24 | 2014-12-24 | 超音波診断装置 |
US14/976,821 US10624606B2 (en) | 2014-12-24 | 2015-12-21 | Ultrasound diagnostic apparatus |
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JP2014260011A JP6425994B2 (ja) | 2014-12-24 | 2014-12-24 | 超音波診断装置 |
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JP2016119934A JP2016119934A (ja) | 2016-07-07 |
JP6425994B2 true JP6425994B2 (ja) | 2018-11-21 |
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JP (1) | JP6425994B2 (ja) |
Families Citing this family (4)
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JP7094217B2 (ja) * | 2015-08-11 | 2022-07-01 | コーニンクレッカ フィリップス エヌ ヴェ | 増大された患者安全性を持つ容量性マイクロマシン超音波トランスデューサ |
AU2016425842A1 (en) * | 2016-10-09 | 2019-03-28 | Covidien Lp | System and method for driving ultrasound imaging transducers |
US10677903B2 (en) | 2016-12-02 | 2020-06-09 | Texas Instruments Incorporated | Methods and apparatus for reducing a transient glitch in ultrasound applications |
EP3480621B1 (en) * | 2017-11-01 | 2022-05-11 | Samsung Medison Co., Ltd. | Ultrasound apparatus and control method thereof |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5234779A (en) * | 1975-09-12 | 1977-03-16 | Tokyo Keiki Co Ltd | Ultrasonic probe |
JPS6143810A (ja) * | 1984-08-08 | 1986-03-03 | Hitachi Ltd | ノイズリダクシヨン回路 |
JPS63145957A (ja) | 1986-12-10 | 1988-06-18 | Hitachi Ltd | 超音波装置における送波回路 |
US4943783A (en) * | 1989-07-31 | 1990-07-24 | Nippon Telegraph And Telephone Corporation | Feed forward distortion correction circuit |
JP2012200460A (ja) | 2011-03-25 | 2012-10-22 | Toshiba Corp | 超音波診断装置 |
JP2012200450A (ja) * | 2011-03-25 | 2012-10-22 | Sanyo Product Co Ltd | 遊技機 |
JP5804854B2 (ja) * | 2011-09-05 | 2015-11-04 | 株式会社東芝 | 超音波診断装置 |
JP2014124427A (ja) | 2012-12-27 | 2014-07-07 | Seiko Epson Corp | 超音波送信回路、集積回路装置、超音波測定装置、超音波プローブ及び超音波診断装置 |
JP6024519B2 (ja) * | 2013-03-04 | 2016-11-16 | コニカミノルタ株式会社 | 超音波診断装置 |
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US10624606B2 (en) | 2020-04-21 |
US20160183917A1 (en) | 2016-06-30 |
JP2016119934A (ja) | 2016-07-07 |
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