Ultrasonic type blood flow amount measuring apparatus
AssigneeKabushiki Kaisha Toshiba
InventorKazuhiro Iinuma
Life of this patent
Estimating the term…
Abstract
A blood flow amount measuring apparatus includes an ultrasonic transducer for steering a region of interest of a subject to be measured with an ultrasonic beam and receiving echoes from that region. A Doppler calculation section detects a Doppler signal on a line orthogonal with the steering lines from the echo signal. The speed v of a blood flow on that line at the region of interest is calculated from the Doppler signal and thus and an amount of blood flowing through the region of interest can be evaluated from that speed and area area of the section of that blood flow.
Claims9
An ultrasonic blood flow amount measuring apparatus comprising:
- ultrasonic transducer means for steering a plurality of ultrasonic beams through a region of interest of a subject which has at least one portion through which blood flows converting echoes from said region of interest into echo signals;
- Doppler signal detecting means for detecting respective Doppler signals from said echo signals delivered from said ultrasonic transducer means, which correspond to the ultrasonic beams;
- and
- calculation means coupled to said Doppler signal detecting means, for calculating an amount of blood flowing through the region of interest on the basis of the Doppler signals obtained along at least one line orthogonoal with the ultrasonic beams.
An ultrasonic flow amount measuring apparatus according to claim 6, wherein said calculation means is comprised of means for calculating an average of amounts of blood which correspond to the lines orthogonal with said ultrasonic beams.
An ultrasonic blood flow amount measuring apparatus comprising:
- ultrasonic transducer means for scanning a region of interest of a subject through which blood flows, employing a plurality of ultrasonic beams, and for converting echoes from said region of interest into echo signals;
- Doppler signal detecting means for detecting Doppler signals from said echo signals delivered from said ultrasonic transducer means, said Doppler signals corresponding to the plurality of ultrasonic beams, respectively;
- and
- calculation means coupled to said Doppler signal detecting means, for calculating an amount of blood flowing through the region of interest on the basis of the Doppler signals obtained along at least one line orthogonal with the ultrasonic beams.
Dependencies are inferred from the claim text.