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Title:
ULTRASONIC DIAGNOSTIC EQUIPMENT
Document Type and Number:
Japanese Patent JP3619138
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To solve the problem of discordant distortion directions of scanned surfaces in forward scanning and backward scanning of an array transducer, via a simple structure.
SOLUTION: The direction of electronic scanning using an ultrasonic beam is reversed between forward scanning and backward scanning. A ROM 42 internally stores number string data indicating an M pieces of selected element numbers for every electronic scanning position. When a counter 44 is incremented, the number string data are read out from the ROM 42 in ascending order and outputted to a multiplexer group 30 to offer electronic scanning in one direction. When the counter 44 is decremented, the number string data are read out from the ROM 42 in descending order and outputted to the multiplexer group 30 to realize electronic scanning in the other direction.


Inventors:
望月 剛
赤羽 睦弘
山下 優子
Application Number:
JP2000000299357
Publication Date:
February 09, 2005
Filing Date:
September 29, 2000
Export Citation:
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Assignee:
アロカ株式会社
International Classes:
A61B8/00; H04R3/00; H04R17/00; (IPC1-7): A61B8/00
Domestic Patent References:
JP52131679A
JP2000070265A
Attorney, Agent or Firm:
吉田 研二
石田 純