JPH0465515U

JPH0465515U -

Info

Publication number: JPH0465515U
Application number: JP10727590U
Authority: JP
Priority date: 1990-10-12
Filing date: 1990-10-12
Publication date: 1992-06-08

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の装置のブロツク図
、第２図は従来のＰＡＣ処理に用いられる装置の
一例を示す図、第３図は距離方向に縮退させた他
の実施例の表示の説明図である。１……トリガ発振器、２……送波ビームフオー
マ、４……超音波探触子、５……受波ビームフオ
ーマ、６……Ｂモード系回路、９……ＤＳＣ、１
１……ＰＡＣコントローラ、２１……実時間表示
器、２２……エリヤマーカ、２３……ミキサーア
レイ、２４……局部発振器、２５……ＩＦＦアレ
イ、２６……ＡＤ変換器アレイ、２７……エレメ
ントエコーメモリ、２８……データプロセツサ、
２９……画像メモリ、３０……事後処理画像再構
成装置、３１……コントローラ。 Fig. 1 is a block diagram of an apparatus according to an embodiment of the present invention, Fig. 2 is a diagram showing an example of an apparatus used for conventional PAC processing, and Fig. 3 is a display of another embodiment degenerated in the distance direction. FIG. 1... Trigger oscillator, 2... Transmitting beam former, 4... Ultrasonic probe, 5... Receiving beam former, 6... B mode system circuit, 9... DSC, 1
1...PAC controller, 21...Real time display, 22...Area marker, 23...Mixer array, 24...Local oscillator, 25...IFF array, 26...AD converter array, 27...Element echo Memory, 28...data processor,
29... Image memory, 30... Post-processing image reconstruction device, 31... Controller.

Claims

[Claims for Utility Model Registration] (1) A multi-channel ultrasonic signal forming a sound ray is transmitted, and the signal reflected from a reflector and received is converted into a serial signal by a receiving beamformer 14. In an ultrasonic imaging device that displays information on a real-time display 21, areas of interest on the real-time display 21 include:
means for displaying a designated area marker 22; a mixer array 23 that receives signals from elements forming sound rays that cross the displayed area marker 22, performs heterodyne detection, and outputs an IF frequency; a local oscillator 24 that generates a variable frequency local oscillation signal so as to track the changing center frequency of the input echo; and an AD converter array 26 that converts the output signal from the mixer array 23 into a digital signal. An element echo memory 27 that stores the output signals of the AD converter array 26 before phasing and addition; a data processor 28 that reads data from the element echo memory 27 a necessary number of times and performs PAC processing as post-processing; and PAC processing. an image memory 29 for storing PAC-processed data; a post-processing image reconstruction device 30 for reading post-processed PAC-processed data from the image memory 29 and reconstructing the image; and from the post-processing image reconstruction device 30. DSC9 performs processing to fit the image data into the corresponding part.
and a controller 31 that generates control signals for controlling each part. (2) The ultrasonic imaging according to claim 1, wherein the data processor 28 performs the post-processing PAC processing using a phase difference method using data between adjacent elements stored in the element echo memory 27. Device. (3) The data processor 28 is characterized in that it performs post-processing PAC processing by correlating the average value of data of all elements stored in the element echo memory 27 with the data of one element. The ultrasonic imaging apparatus according to claim 1. (4) The ultrasonic imaging apparatus according to claim 1, wherein the detector represented by the mixer array 23 and the local oscillator 24 outputs i,q baseband signals instead of a heterodyne detector. . (5) The DSC 9 freezes the B-mode image data until the post-processing PAC process is completed in order to fit the data in the area designated by the area marker 22 into the normal B-mode image data. The ultrasonic imaging device according to claim 1, characterized in that: (6) The ultrasonic imaging device according to claim 1, wherein the real-time display 21 displays the image by changing the brightness, hue, etc. so that the B-mode image with PAC and the normal B-mode image can be distinguished. Device. (7) DSC9 shows the overall image of the normal B-mode image,
The echo signals of each element within the area marker 22 are stored in pairs, and the B-mode image of the area specified by the area marker 22 is inserted into a normal B-mode image at a later date or by another device, and displayed on a real-time display. 2
2. The ultrasonic imaging apparatus according to claim 1, wherein the ultrasonic imaging apparatus is configured to display an image on a screen.