Ultrasonic imaging device and method
AssigneeFUJIFILM Healthcare Corporation
InventorRei Asami
Life of this patent
Estimating the term…
Abstract
Provided is a technique capable of preventing a deterioration of a frame rate or a temporal resolution and estimating a blood flow velocity in a wide velocity range. A method is based on an unequal interval transmission method, and calculates a blood flow velocity by using a temporally adjacent received signal set and a temporally discontinuous received signal set, among a plurality of received signals obtained via a plurality of times of transmission in one transmission direction. When a number of the adjacent received signal set and a number of the temporally discontinuous received signal set are the same, an expansion of the velocity range similar to an unequal interval transmission in related art can be realized and the frame rate can be improved.
Claims9
An ultrasonic imaging device, comprising:
- an ultrasonic transmitter configured to transmit ultrasonic waves a plurality of times at different transmission intervals;
- an ultrasonic receiver configured to receive ultrasonic waves irradiated from the ultrasonic transmitter and reflected from a subject;
- and
- a blood flow calculator configured to process a plurality of received signals received by the ultrasonic receiver corresponding to the plurality of times of transmission and calculate blood flow information of the subject, wherein
- the blood flow calculator includes a data selector configured to respectively select received signal sets from ultrasonic waves having the same transmission interval for a plurality of types of transmission intervals, among the plurality of received signals, and a blood flow velocity calculator configured to calculate a blood flow velocity without wrapping using a plurality of types of received signal sets selected by the data selector, and
- the data selector is configured to select a temporally discontinuous received signal set as at least one of the plurality of types of received signal sets.
Dependencies are inferred from the claim text.