-
公开(公告)号：JPH08229047A
公开(公告)日：1996-09-10
申请号：JP28813895
申请日：1995-10-11
Applicant: ADVANCED TECH LAB
Inventor： DEIBITSUDO ENU RAUNDOHIRU , DEIBITSUDO RUSUTO
Abstract: PROBLEM TO BE SOLVED: To provide magnified display of an appointed part of an ultrasonic image by preparing a selector to select a magnified part of an ultrasonic image being displayed and a filter to vary the band width of ultrasonic information displayed corresponding to the magnifying power for a selected part. SOLUTION: An echo signal received by a ultrasonic scan head 40 which scans through an image sector 10 is filtered at a band-pass filter 62, then detected at a detector 64 and composes a baseband echo signal. Detected each signals are logarithmically compressed and only the lower frequency is filtered through a variable low frequency filter 70, memorized in an image memory 80, converted at a scan converter 90 and display at a display 100. The band width of the filter 70 varies in response to both the size of displaying area in which the picture information emerges and the density of picture element. An input unit which gives a controller 72 information about the size of the whole original picture decides the ratio between the whole picture image and the zoomed image area to define the variation of band width.
-
公开(公告)号：JPH08322839A
公开(公告)日：1996-12-10
申请号：JP28439395
申请日：1995-10-06
Applicant: ADVANCED TECH LAB
Abstract: PROBLEM TO BE SOLVED: To prevent generation of false image without decreasing frame speed by transmitting along direction of a first and a second beams locating at the two transverse ends of an image field, and then transmitting along beam direction adjacent to the inner side of the transverse direction of the first and the second beams to continuously scan the image field. SOLUTION: Timing of converter array 30 is controlled by a emitter-receiver controller 60, scanning sequence is started by scanning in the order of beam direction 1 and beam direction 2 of two beams locating at two sides of a center line 12 of a sector 10. After scanning the beam direction 2 at right side of the sector, the beam direction 3 at left side of the beam 1 is scanned, and continuously, beam direction 4 at right side of the beam 2 is scanned. The scanning sequence moves from the center of the sector toward the outside of the transverse direction and goes ahead from one side to other side of the sector and returns back. The each beam direction is equally scanned with 2PR1 intervals from a spaced adjacency passing through the whole image.
-
公开(公告)号：JPH08206112A
公开(公告)日：1996-08-13
申请号：JP28813995
申请日：1995-10-11
Applicant: ADVANCED TECH LAB
Inventor： DEIBITSUDO RUSUTO , DEIBITSUDO ENU RAUNDOHIRU
Abstract: PROBLEM TO BE SOLVED: To automatically set a time gain compensation in response to the kind of an inspection, by a method wherein the amplification factor of the sequence of an ultrasonic echo signal is controlled by selecting time gain compensation characteristics in response to the selection of a specified ultrasonic diagnosis processing method, and at the same time, the selected time gain compensation characteristic is displayed. SOLUTION: When a desired processing is selected by using the control on a control panel 28, the information is transmitted from the control panel 28 to a setting memory 72 and a setting controller 70. The setting controller 70 detects a control variable for the processing in the setting memory 72, initializes the device, and controls a scanning head and an echo signal processing. The setting controller 70 controls the gain of a time gain compensation amplifier 50 based on optimum time gain compensation characteristics, and provides a graphic information to an image processor 60 so that a visual display of the optimum time gain compensation characteristic may be shown on an image display device 62.
-
-
Search Results
3
records
(took 0.019 seconds)
