US 12,279,912 B2
Spectral doppler envelope tracing without alias in medical ultrasound
King Wong, Issaquah, WA (US); Chengzong Han, Bellevue, WA (US); and Paul Donald Freiburger, Seattle, WA (US)
Assigned to Siemens Medical Solutions USA, Inc., Malvern, PA (US)
Filed by Siemens Medical Solutions USA, Inc., Malvern, PA (US)
Filed on Dec. 6, 2022, as Appl. No. 18/062,154.
Prior Publication US 2024/0180525 A1, Jun. 6, 2024
Int. Cl. A61B 8/00 (2006.01); G01S 15/89 (2006.01); G01S 7/52 (2006.01)
CPC A61B 8/488 (2013.01) [G01S 15/8979 (2013.01); G01S 7/52066 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for spectral Doppler imaging, the method comprising:
acquiring, with an ultrasound system, samples representing response from a range gate;
estimating, by a Doppler estimator, spectra over time for the range gate from the samples;
plotting the spectra over time from 0 to 2π;
identifying, for each spectrum of the spectra, a point in a noise region between a first signal and a second signal, 0, or 2π;
tracing a spectral envelope over time, the tracing limited by the points for the spectra; and
displaying the spectral envelope or information derived from the spectral envelope in an image.