Method for processing ultrasonic echo signals of both directionally reflecting as well as nondirectionally scattering objects, particularly for ultrasonic image processing in the field of substance or tissue investigation
First Claim
1. A method for processing ultrasonic echo signals of both directionally reflecting and nondirectionally scattering objects, particularly for ultrasonic image processing in the field of substance and tissue examination, said method comprising:
- scanning an object from various scanning directions to produce respective ultrasonic echo signals from respective common object areas, and linking the ultrasonic echo signals from various scanning directions as to respective common object areas in dependence upon the presence of echo signal amplitudes corresponding to directional reflection from the object for producing an image in such manner that the derivation of the echoes from directionally reflecting or nondirectionally scattering object areas is taken into consideration.
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Abstract
In an exemplary embodiment partial images of an object are obtained by scanning the object from different directions, e.g. by compound scanning. For a given object region or point, the different partial images may include a response maximum signifying a directionally reflecting region. Other object regions may provide echo signal amplitudes in a range signifying a locally isotropic scattering. According to the disclosure, the partial images are linked or combined taking account of the nature of the respective object regions as being directionally reflecting or nondirectionally scattering.
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Citations
31 Claims
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1. A method for processing ultrasonic echo signals of both directionally reflecting and nondirectionally scattering objects, particularly for ultrasonic image processing in the field of substance and tissue examination, said method comprising:
- scanning an object from various scanning directions to produce respective ultrasonic echo signals from respective common object areas, and linking the ultrasonic echo signals from various scanning directions as to respective common object areas in dependence upon the presence of echo signal amplitudes corresponding to directional reflection from the object for producing an image in such manner that the derivation of the echoes from directionally reflecting or nondirectionally scattering object areas is taken into consideration.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 26, 27, 28, 29, 30, 31)
- 19. A method according to any of the preceeding claims, characterized in that the number of partial images which have contributed to the respective image point in a linkage image is noted in a separate "isotropy image".
Specification