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公开(公告)号：DE3676755D1
公开(公告)日：1991-02-14
申请号：DE3676755
申请日：1986-05-28
Applicant: ADVANCED TECH LAB
Inventor： DESJARDINS PHILIP A , POWERS JEFFRY E
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公开(公告)号：CA1262276A
公开(公告)日：1989-10-10
申请号：CA509991
申请日：1986-05-26
Applicant: ADVANCED TECH LAB
Inventor： DESJARDINS PHILIP A , POWERS JEFFRY E
Abstract: RANGE-CONTINUITY ANTI-ALIASING A Doppler blood velocity measuring device is described which includes anti-aliasing circuitry. The anti-aliasing circuitry is based upon the use of a multigate Doppler unit which receives Doppler shift frequency information from various depth ranges. Thereafter, the Doppler frequencies received are corrected by adding a correction frequency to the perceived Doppler frequency with the correction frequency selected based on the assumption that blood flow velocity cannot change drastically between adjacent depths.
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公开(公告)号：AT59764T
公开(公告)日：1991-01-15
申请号：AT86107241
申请日：1986-05-28
Applicant: ADVANCED TECH LAB
Inventor： DESJARDINS PHILIP A , POWERS JEFFRY E
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