ALEXANDRIA, Va., July 7 -- United States Patent no. 12,672,845, issued on July 7, was assigned to University of Washington (Seattle).

"System and method for measuring total blood volume with ultrasound" was invented by Shahram Aarabi (Seattle) and Daniel F. Leotta (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "Apparatuses and methods for measuring total blood volume with ultrasound are disclosed. In one embodiment, a system for monitoring a blood volume of a patient includes an ultrasound transmitter configured for emitting an ultrasound toward a target blood vessel of the patient; and an ultrasound receiver configured for receiving the ultrasound reflected from the target blood vessel of the patien...