Title:
ULTRASONIC FLUID OBSERVING APPARATUS
Document Type and Number:
Japanese Patent JPS6048734
Kind Code:
A
Abstract:
An apparatus (100) for observing blood flow patterns by utilizing ultrasonic beams (125) includes at least a pulse generator (110), a transducer (120), first and second phase detectors (140; 160), and a monitor (170). The ultrasonic beams (125) are transmitted and received by the transducer (120) to obtain echo signals reflected from the body (130). The echo signals are phase-detected by the first phase detector (140) to derive pulsed Doppler signals. The pulsed Doppler signals are phase-detected by the second phase detector (160) to derive phase difference signals between the sampled pulsed Doppler signals. The sampling periods are determined in accordance with a depth of the body (130) along a travel path of the ultrasonic beams (125). The blood flow patterns of the blood cells of the body (130) are displayed on the monitor (170) by processing the phase difference signals.
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Inventors:
IINUMA KAZUHIRO
Application Number:
JP15619383A
Publication Date:
March 16, 1985
Filing Date:
August 25, 1983
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
A61B8/06; A61B8/14; A61B8/00; G01S15/89; (IPC1-7): A61B8/06; A61B8/14
Attorney, Agent or Firm:
Noriyuki Noriyuki (1 person outside)