Ultrasonic diagnosis apparatus
First Claim
1. In an ultrasonic diagnostic apparatus comprising means for scanning the interior of a subject'"'"'s body with a plurality of beams, each of said beams comprising ultrasonic pulses;
- and means for receiving echo signals returning from the subject'"'"'s body with respect to various sound rays of said ultrasonic, pulses, the improvement comprisingmeans for determining a receiving signal for a portion of one of said sound rays by effecting a correlation process on the echo signals of said plurality of ultrasonic pulses each having a difference in directionality within a rang of bearing resolution of the respective ultrasonic beam; and
means for forming a sectional image of the subject'"'"'s body on the basis of the receiving echo signal of the respective sound ray thus determined, whereby speckle noise is eliminated from the sectional image.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention for realizing an ultrasonic diagnosis apparatus for displaying a high-quality image having a smaller amount of speckle noise is characterized in that receiving signals of a plurality of sound rays each having a different directionality within a range of bearing resolution of an ultrasonic beam are subjected to correlation processing to determine a receiving signal for the portion of one sound ray, and an image is formed on the basis of receiving signals thus determined, thereby eliminating speckle noise. Correlation processing in its simplest form may be addition averaging processing.
-
Citations
5 Claims
-
1. In an ultrasonic diagnostic apparatus comprising means for scanning the interior of a subject'"'"'s body with a plurality of beams, each of said beams comprising ultrasonic pulses;
- and means for receiving echo signals returning from the subject'"'"'s body with respect to various sound rays of said ultrasonic, pulses, the improvement comprising
means for determining a receiving signal for a portion of one of said sound rays by effecting a correlation process on the echo signals of said plurality of ultrasonic pulses each having a difference in directionality within a rang of bearing resolution of the respective ultrasonic beam; and means for forming a sectional image of the subject'"'"'s body on the basis of the receiving echo signal of the respective sound ray thus determined, whereby speckle noise is eliminated from the sectional image. - View Dependent Claims (2, 3, 4, 5)
- and means for receiving echo signals returning from the subject'"'"'s body with respect to various sound rays of said ultrasonic, pulses, the improvement comprising
Specification