JPS6134811B2 - - Google Patents

Info

Publication number
JPS6134811B2
JPS6134811B2 JP52147065A JP14706577A JPS6134811B2 JP S6134811 B2 JPS6134811 B2 JP S6134811B2 JP 52147065 A JP52147065 A JP 52147065A JP 14706577 A JP14706577 A JP 14706577A JP S6134811 B2 JPS6134811 B2 JP S6134811B2
Authority
JP
Japan
Prior art keywords
ultrasonic
sent
ultrasonic probe
subject
probe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP52147065A
Other languages
Japanese (ja)
Other versions
JPS5479984A (en
Inventor
Yoshihisa Okazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to JP14706577A priority Critical patent/JPS5479984A/en
Publication of JPS5479984A publication Critical patent/JPS5479984A/en
Publication of JPS6134811B2 publication Critical patent/JPS6134811B2/ja
Granted legal-status Critical Current

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  • Ultra Sonic Daignosis Equipment (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Description

【発明の詳細な説明】 本発明は超音波診断装置に関し、例えば、セク
タスキヤン方式を用いて被検体の断層像を得る超
音波診断装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ultrasonic diagnostic apparatus, and for example, to an ultrasonic diagnostic apparatus that obtains a tomographic image of a subject using a sector scan method.

従来、超音波探触子の面に平行な被検体の断層
像(以下Cモード像と言う)を得るのに、リニア
スキヤン方式、即ち超音波探触子を超音波ビーム
に垂直な方向に走査させる方式を用いた超音波診
断装置があつた。このような超音波診断装置では
例えば肋骨間の心臓のCモード像を得る場合、肋
骨によつて超音波ビームが透過しにくいため、超
音波探触子の位置が限定され、任意に超音波探触
子をリニアスキヤンできなかつた。また、超音波
探触子の幅が広く、肋骨間の狭い位置より被検体
内に超音波ビームを送受するのに、従来の超音波
診断装置は適していなかつた。
Conventionally, to obtain a tomographic image of a subject parallel to the plane of the ultrasound probe (hereinafter referred to as a C-mode image), a linear scan method was used, that is, the ultrasound probe was scanned in a direction perpendicular to the ultrasound beam. An ultrasonic diagnostic device using this method was created. With such an ultrasound diagnostic device, for example, when obtaining a C-mode image of the heart between the ribs, the ultrasound beam is difficult to pass through the ribs, so the position of the ultrasound probe is limited, and the ultrasound probe cannot be moved arbitrarily. I was unable to linearly scan the tentacles. Furthermore, the width of the ultrasound probe is wide, and conventional ultrasound diagnostic apparatuses are not suitable for transmitting and receiving ultrasound beams into the subject from a narrow position between the ribs.

本発明は、上記欠点を除去し、超音波探触子を
リニアスキヤン等のように移動させずに単に回転
させることにより、例えば肋骨間のような狭い位
置に超音波探触子があつても、被検体のCモード
像を得ることができる超音波診断装置を提供する
ことを目的としている。
The present invention eliminates the above drawbacks and simply rotates the ultrasound probe without moving it as in a linear scan, so that it can be placed in a narrow position such as between the ribs. The present invention aims to provide an ultrasonic diagnostic apparatus that can obtain a C-mode image of a subject.

以下、本発明を実施例に基づいて詳しく説明す
る。尚、図面において同一部分には同一番号を付
した。
Hereinafter, the present invention will be explained in detail based on examples. In addition, the same numbers are attached to the same parts in the drawings.

第1図は、本発明の一実施例である超音波探触
子部分の構造断面図である。超音波探触子11は
シヤフト12に固定されている。このシヤフト1
2を電動機13の軸に接続する。シヤフト12を
介して超音波探触子11を回転さるように前記電
動機13を駆動する。この超音波探触子11の回
転角を検出するために回転角検出器(図示せず)
が設けられている。尚、前記超音波探触子11を
手動にして回転させる時には、電動機13は不要
であり、超音波探触子11の転角を、例えばポテ
ンシヨメータ等の回転検出器によつて検出するこ
とも可能である。前記超音波探触子11、シヤフ
ト12、及び電動機13等を包囲するホルダー1
4は、筐体15に取付けられており、かつ、前記
超音波探触子11とはボールベアリング16を介
して接触されている。従つて、超音波探触子11
は、超音波探触子の中心軸17を中心に滑らかに
回転することができる。
FIG. 1 is a structural sectional view of an ultrasonic probe portion according to an embodiment of the present invention. Ultrasonic probe 11 is fixed to shaft 12. This shaft 1
2 is connected to the shaft of the electric motor 13. The electric motor 13 is driven to rotate the ultrasonic probe 11 via the shaft 12. A rotation angle detector (not shown) is used to detect the rotation angle of this ultrasonic probe 11.
is provided. Note that when the ultrasonic probe 11 is manually rotated, the electric motor 13 is not necessary, and the rotation angle of the ultrasonic probe 11 is detected by a rotation detector such as a potentiometer. is also possible. A holder 1 surrounding the ultrasonic probe 11, shaft 12, electric motor 13, etc.
4 is attached to the housing 15 and is in contact with the ultrasonic probe 11 via a ball bearing 16. Therefore, the ultrasonic probe 11
can rotate smoothly around the central axis 17 of the ultrasound probe.

第2図は、本発明に係わる超音波ビームの走査
方法の説明図である。超音波探触子11から放出
された超音波ビーム21は、図示しない走査手段
によつて、例えば周知の電子的走査手段や機械的
走査手段、又は手動にて各々細いビーム21a,
21b,…,21gのようにセクタ状に走査され
る。被検体の体表から所望の深さxとx+Δx間
の反射波のみ検出して超音波探触子11と平行な
面の被検体、即ちCモード像を得る場合には、前
記細いビームの方向に応じてそれぞれ(1)式にした
がつてタイミングをとり、各ビームごとにエコー
検出する。
FIG. 2 is an explanatory diagram of the ultrasonic beam scanning method according to the present invention. The ultrasonic beam 21 emitted from the ultrasonic probe 11 is scanned by a scanning means (not shown), for example, by well-known electronic scanning means, mechanical scanning means, or manually into narrow beams 21a, 21a,
It is scanned in sectors like 21b, . . . , 21g. When detecting only the reflected waves between the desired depths x and x+Δx from the body surface of the subject to obtain a C-mode image of the subject in a plane parallel to the ultrasound probe 11, the direction of the narrow beam The timing is set according to equation (1) according to each beam, and echoes are detected for each beam.

o=2x/C・cosθ ……(1) 但し、toは、前記細いビーム21a,21b,
…,21gのうちそれぞれの所定のビームが超音
波探触子11から放出され、深さxの位置で反射
され超音波探触子に戻つてくるまでの時間を示
し、θoは前記所定のビームが中心軸17となす
角度を示す。前記超音波ビーム21を開始位置2
2において1回セクタ状に走査した後、超音波探
触子11を中心軸17のまわりに、例えば再度δ
だけ回転させ、再びこの回転後の位置23におい
て超音波ビームをセクタ状に走査する。従つて、
このセクタ状の走査及び回転の走査を、超音波探
触子11が、例えば1回転するまで繰り返すこと
によつて、被検体の体表から任意の深さxのCモ
ード像が円形状に得られる。
t o =2x/C・cosθ o ...(1) However, t o is the narrow beam 21a, 21b,
..., 21g, each predetermined beam is emitted from the ultrasonic probe 11, reflected at the position of depth x, and returns to the ultrasonic probe. The angle that the beam makes with the central axis 17 is shown. The ultrasonic beam 21 is placed at the starting position 2
2, the ultrasonic probe 11 is moved around the central axis 17 again, for example, in the direction of δ.
The ultrasonic beam is rotated by 20 degrees, and the ultrasonic beam is scanned in a sector shape again at the rotated position 23. Therefore,
By repeating this sector-like scanning and rotational scanning until the ultrasound probe 11 rotates, for example, once, a circular C-mode image can be obtained at an arbitrary depth x from the body surface of the subject. It will be done.

第3図は、本発明の装置の一実施例をブロツク
図で示したものである。
FIG. 3 shows a block diagram of one embodiment of the apparatus of the present invention.

発信器31からの信号は、スキヤニングコント
ロール回路32及びパルス発生器33に送られ
る。このパルス発生器33からは、超音波パルス
を被検体に送信する送信用パルスが発生される。
このパルスは、送信用遅延回路34に送られ、そ
こでコントロール信号によつて、超音波探触子1
1から複数個の細い超音波ビームがセクター状に
放出されるようにして制御される。送信用遅延回
路34から送られる前記制御された送信用パルス
は、送受切換スイツチ35を介して、例えば複数
個の振動素子(図示せず)から成る前記超音波探
触子11に送られる。この超音波探触子11から
は被検体36に向つて超音波ビーム21が送られ
る。この被検体36からの超音波ビームの反対波
は、前記超音波探触子11で受信される。この
時、前記送受切換スイツチ35によつて送信パル
スは遮断されるとともに、前記超音波探触子11
で受信された反射波は、受信用遅延回路37に送
られる。この受信用遅延回路37は、超音波探触
子11に送信されたそれぞれの複数個の送信用パ
ルスと受信された複数個の反射波とがそれぞれ対
応づけられるように、前記スキヤニングコントロ
ール回路32から送られてくるコントロール信号
によつて制御されている。受信用遅延回路37に
送られた前記超音波探触子11の各振動素子から
の反射波の信号は加算器38で加算された後、増
幅器39に送られる。超音波探触子11から被検
体36に送られる細い超音波ビームがセクタ状に
走査された後、超音波探触子11は、電動機13
によつて所定の角度だけ回転される。この回転角
は、回転角検出器40で検出され、電気信号に変
換されて、走査駆動回路41に送られる。この走
査駆動回路41には前記スキヤニングコントロー
ル回路32からもコントロール信号が送られ、そ
こで陰極線管42の電子線の走査を行なう走査信
号が発生される。そして、この走査信号が前記走
査駆動回路41から表示装置例えば陰極線管42
に送られる。
A signal from the transmitter 31 is sent to a scanning control circuit 32 and a pulse generator 33. This pulse generator 33 generates a transmission pulse for transmitting an ultrasonic pulse to the subject.
This pulse is sent to the transmission delay circuit 34, where it is sent to the ultrasound probe 1 by a control signal.
One to a plurality of thin ultrasonic beams are controlled to be emitted in a sector-like manner. The controlled transmission pulse sent from the transmission delay circuit 34 is sent to the ultrasonic probe 11, which is composed of, for example, a plurality of vibrating elements (not shown), via a transmission/reception changeover switch 35. An ultrasonic beam 21 is sent from this ultrasonic probe 11 toward a subject 36 . The opposite wave of the ultrasound beam from the subject 36 is received by the ultrasound probe 11 . At this time, the transmission pulse is cut off by the transmission/reception switch 35, and the ultrasonic probe 11
The reflected wave received is sent to the reception delay circuit 37. This reception delay circuit 37 is connected to the scanning control circuit 32 so that each of the plurality of transmission pulses transmitted to the ultrasound probe 11 and the plurality of received reflected waves are associated with each other. It is controlled by control signals sent from the The reflected wave signals from each vibrating element of the ultrasonic probe 11 sent to the receiving delay circuit 37 are added together by an adder 38 and then sent to an amplifier 39. After the thin ultrasonic beam sent from the ultrasonic probe 11 to the subject 36 is scanned in a sector shape, the ultrasonic probe 11
is rotated by a predetermined angle. This rotation angle is detected by a rotation angle detector 40, converted into an electrical signal, and sent to a scan drive circuit 41. A control signal is also sent from the scanning control circuit 32 to the scanning drive circuit 41, and a scanning signal for scanning the electron beam of the cathode ray tube 42 is generated therein. This scanning signal is then transmitted from the scanning drive circuit 41 to a display device such as a cathode ray tube 42.
sent to.

一方、被検体の体表から深さxとx+Δxの間
の反射波のみを検出するため、前記(1)式に記載さ
れた角度θoに関する角度信号が前記スキヤニン
グコントロール回路32からゲート発生器43に
送られる。このゲート発生器43において、前記
被検体の体表から深さxとx+Δxの間の反射波
のみを検出するゲート信号が発生され、前記増幅
器39に送られる。このゲート信号が送られてい
る間だけ、増幅器39から陰極線管42に前記超
音波の反射波の信号が送られる。陰極線管42で
は前記走査信号及び前記増幅器39から送られて
くる超音波の反射波の信号から、被検体のCモー
ド像が表示まれる。
On the other hand, in order to detect only reflected waves between depths x and x+Δx from the body surface of the subject, an angle signal related to the angle θ o described in equation (1) is sent from the scanning control circuit 32 to the gate generator. Sent to 43. This gate generator 43 generates a gate signal that detects only reflected waves between depths x and x+Δx from the body surface of the subject, and sends it to the amplifier 39. Only while this gate signal is being sent, a signal of the reflected ultrasonic wave is sent from the amplifier 39 to the cathode ray tube 42. In the cathode ray tube 42, a C-mode image of the object is displayed from the scanning signal and the signal of the reflected ultrasound wave sent from the amplifier 39.

以上、本発明によつて超音波パルスをセクタ状
に走査せしめると共に、超音波探触子を移動させ
ずして単に回転させることにより、例えば肋骨間
のような狭い位置に超音波探触子があつても被検
体のCモード像を得ることができる超音波診断装
置が提供できる。
As described above, according to the present invention, by scanning ultrasonic pulses in a sector-like manner and simply rotating the ultrasonic probe without moving it, the ultrasonic probe can be placed in a narrow position such as between the ribs. An ultrasonic diagnostic apparatus that can obtain a C-mode image of a subject can be provided.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明の実施例の要部断面図、第2
図は本発明に係わる超音波ビームの走査方法の説
明図、第3図は、本発明の実施例のブロツク図に
よる説明図である。 11……超音波探触子、12……シヤフト、1
3……電動機、14……ホルダー、15……筐
体、16……ボールベアング、31……発信器、
32……スキヤニングコントロール回路、33…
…パルス発生器、34……送信用遅延回路、35
……送信切換スイツチ、37……受信用遅延回
路、38……加算器、39……増幅器、40……
回転角検出器、41……ゲート発生器、42……
表示装置、43……走査駆動回路。
FIG. 1 is a sectional view of main parts of an embodiment of the present invention, and FIG.
The figure is an explanatory diagram of an ultrasonic beam scanning method according to the present invention, and FIG. 3 is an explanatory diagram using a block diagram of an embodiment of the present invention. 11... Ultrasonic probe, 12... Shaft, 1
3... Electric motor, 14... Holder, 15... Housing, 16... Ball bearing, 31... Transmitter,
32...Scanning control circuit, 33...
... Pulse generator, 34 ... Transmission delay circuit, 35
...Transmission selector switch, 37...Delay circuit for reception, 38...Adder, 39...Amplifier, 40...
Rotation angle detector, 41... Gate generator, 42...
Display device, 43...Scanning drive circuit.

Claims (1)

【特許請求の範囲】[Claims] 1 超音波パルスを送受する超音波探触子と、こ
の超音波パルスを被検体に対してセクタ状に走査
せしめる走査手段とから成る超音波診断装置にお
いて、前記超音波探触子の前記超音波パルスの放
出面の所定の点を中心にしてこの超音波探触子を
回転させることにより前記被検体の断層像を得る
ことを特徴として超音波診断装置。
1. In an ultrasonic diagnostic apparatus comprising an ultrasonic probe that transmits and receives ultrasonic pulses, and a scanning means that scans the ultrasonic pulses in sectors on a subject, the ultrasonic wave of the ultrasonic probe An ultrasonic diagnostic apparatus characterized in that a tomographic image of the subject is obtained by rotating the ultrasonic probe around a predetermined point on a pulse emission surface.
JP14706577A 1977-12-09 1977-12-09 Ultrasonic diagnosing device Granted JPS5479984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14706577A JPS5479984A (en) 1977-12-09 1977-12-09 Ultrasonic diagnosing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14706577A JPS5479984A (en) 1977-12-09 1977-12-09 Ultrasonic diagnosing device

Publications (2)

Publication Number Publication Date
JPS5479984A JPS5479984A (en) 1979-06-26
JPS6134811B2 true JPS6134811B2 (en) 1986-08-09

Family

ID=15421683

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14706577A Granted JPS5479984A (en) 1977-12-09 1977-12-09 Ultrasonic diagnosing device

Country Status (1)

Country Link
JP (1) JPS5479984A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55125959U (en) * 1979-02-28 1980-09-06
JPS5663412U (en) * 1979-10-24 1981-05-28
JPS571331A (en) * 1980-06-03 1982-01-06 Tokyo Shibaura Electric Co Ultrasonic diagnosis apparatus
JPH0519049Y2 (en) * 1986-06-09 1993-05-20

Also Published As

Publication number Publication date
JPS5479984A (en) 1979-06-26

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