Doppler ultrasound device and method for cardiac output measurement with two probes
Inventors
GO, Doo Young • SONG, Il Seob • KIM, Jung Jun • Yoo, Yang Mo
Assignees
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Publication Number
US-12653491-B2
Publication Date
2026-06-16
Expiration Date
Abstract
According to the cardiac output measurement device according to the present disclosure, it is possible to measure the cardiac output more easily in a non-invasive manner by calculating the cardiac output based on the first ultrasound reception signal and the second ultrasound reception signal received from the first ultrasound probe and the second ultrasound probe that are located in both directions based on the heart.
Core Innovation
The invention relates to a non-invasive cardiac output measurement device for a human body. A first ultrasound probe is arranged in a first direction based on a heart and transmits a first ultrasound transmission signal to a first region and receives a first ultrasound reception signal reflected from the first region. A second ultrasound probe is arranged in a second direction opposite to the first direction based on the heart and transmits a second ultrasound transmission signal to a second region and receives a second ultrasound reception signal reflected from the second region.
A calculation unit calculates cardiac output based on the first ultrasound reception signal and the second ultrasound reception signal. The calculation unit applies a correction unit that applies a predetermined correction constant to a summed cardiac output obtained by summing a first weighted cardiac output and a second weighted cardiac output. The first cardiac output is generated from a first spectral Doppler generated from the first ultrasound reception signal, and the second cardiac output is generated from a second spectral Doppler generated from the second ultrasound reception signal.
The invention further includes a synthesis unit that synthesizes the first spectral Doppler and the second spectral Doppler to generate a synthesized spectral Doppler. An estimation unit estimates cardiac output based on the synthesized spectral Doppler by using velocity-time integral from the synthetic Doppler. A result providing unit provides a result signal or a notification when the cardiac output is outside reference values.
Claims Coverage
Independent claim clm-00001 defines a cardiac output measurement device with two ultrasound probes arranged in opposite directions, cardiac output calculation using respective spectral Dopplers, and application of a predetermined correction constant to a weighted summed cardiac output.
Opposite-direction first and second ultrasound probes based on the heart
A first ultrasound probe arranged in a first direction based on a heart transmits a first ultrasound transmission signal to a first region and receives a first ultrasound reception signal reflected from the first region, and a second ultrasound probe arranged in a second direction opposite to the first direction transmits a second ultrasound transmission signal to a second region and receives a second ultrasound reception signal reflected from the second region.
Cardiac output calculation from first and second spectral Dopplers
A calculation unit calculates cardiac output based on the first ultrasound reception signal and the second ultrasound reception signal, wherein the first cardiac output is generated from a first spectral Doppler generated from the first ultrasound reception signal and the second cardiac output is generated from a second spectral Doppler generated from the second ultrasound reception signal.
Predetermined correction constant applied to weighted summed cardiac output
The calculation unit includes a correction unit that applies a predetermined correction constant to a summed cardiac output obtained by summing a first weighted cardiac output obtained by applying the first weight to the first cardiac output and a second weighted cardiac output obtained by applying the second weight to the second cardiac output.
The main inventive elements are the use of two ultrasound probes arranged in opposite directions relative to the heart, spectral Doppler-based generation of first and second cardiac outputs from respective reception signals, and application of a predetermined correction constant to a weighted summed cardiac output derived from those spectral Doppler outputs.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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