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Comparison of conventional and transverse Doppler sonograms
Author(s) -
Dickerson K S,
Newhouse V L,
Tortoli P,
Guidi G
Publication year - 1993
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.1993.12.9.497
Subject(s) - doppler effect , transverse plane , medicine , imaging phantom , optics , flow (mathematics) , doppler ultrasound , acoustics , physics , radiology , mechanics , astronomy
When measuring flow velocity using the conventional ultrasonic Doppler effect, beam axis‐to‐flow angles approaching 90 degrees are avoided as the Doppler spectrum frequency shift is known to go to zero at this angle. In this paper, the conventional Doppler technique is compared with the transverse Doppler method, in which the Doppler spectrum bandwidth is used to estimate flow, allowing flow to be probed at 90 degrees. The comparison is made using a moving thread flow phantom capable of executing various velocity profiles. This technique may allow the probing of vessels that are inaccessible to conventional oblique probing, thus complementing the conventional Doppler technique.