US Patent Issued to Siemens Medical Solutions USA on April 22 for "Spectral doppler envelope tracing without alias in medical ultrasound" (Washington Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,279,912, issued on April 22, was assigned to Siemens Medical Solutions USA Inc. (Malvern, Pa.).

"Spectral doppler envelope tracing without alias in medical ultrasound" was invented by King Wong (Issaquah, Wash.), Chengzong Han (Bellevue, Wash.) and Paul Donald Freiburger (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "For spectral Doppler imaging, the search range for tracing the spectral envelope is set dynamically. The limit for searching for the envelope is established by spectrum-by-spectrum placement between bands. This search may be aided by plotting the spectra from 0 to 2Pi. The limit varies over time to better separate bands so that subs...