Ultrasonic diagnostic apparatus

摘要

In one embodiment, a scanning unit repeatedly scans an internal region of an object with an ultrasonic wave at a predetermined frame rate via an ultrasonic probe. An image generation unit extracts a blood flow signal based on a Doppler effect from a reflection signal and repeatedly generates a blood flow image representing a spatial distribution associated with power of the blood flow signal at the frame rate. A power average value associated with a frame or local region is calculated for the blood flow image. The blood flow image is corrected. In the correcting, a gain on the power values in the frame or local region in which the power average value exceeds the threshold are substantially reduced, and power values in the frame or local region in which the power average value is not more than the threshold are maintained.

主权项

1. An ultrasonic diagnostic apparatus, comprising:
an ultrasonic probe; a scanning circuit that includes a transmission circuit and a reception circuit and is configured to perform a scan of an internal region of an object with an ultrasonic wave at a predetermined frame rate via the ultrasonic probe; a processor configured to
extract a Doppler signal based on a Doppler effect from a reflection signal obtained by the scan and generate a Doppler signal image representing a spatial distribution associated with power of the Doppler signal;calculate a power average value in a frame of the Doppler signal image;compare the calculated power average value to a threshold; andperform processing of reducing power values of pixels in the frame of the Doppler signal image in which the power average value exceeds the threshold, to generate a corrected Doppler signal image.