Three-dimensional blind deconvolution of ultrasound images.
IEEE Trans Ultrason Ferroelectr Freq Control
; 48(4): 867-71, 2001 Jul.
Article
in En
| MEDLINE
| ID: mdl-11477777
ABSTRACT
Three-dimensional ultrasound images are blurred by the ultrasound pulse through the convolution between the 3-D tissue signal and the 3-D pulse. The blurring reduces the spatial resolution of the 3-D ultrasound images and, consequently, their diagnostic value. This paper presents a method for 3-D blind homomorphic deconvolution of medical 3-D ultrasound images to improve their spatial resolution. The blind estimate of the 3-D pulse is necessary because the pulse changes in spatial extent and frequency composition as it passes through the tissues and because the pulse is not separable in its spatial dimensions. The method was tested on a 3-D image of a phantom with anechoic spheres of known size in a uniform diffuse scattering matrix. The spheres were clearly better defined and had volumes much closer to the true volume in the deconvolved image than in the original image.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Ultrasonography
Type of study:
Diagnostic_studies
Limits:
Humans
Language:
En
Journal:
IEEE Trans Ultrason Ferroelectr Freq Control
Journal subject:
MEDICINA NUCLEAR
Year:
2001
Document type:
Article
Affiliation country:
Noruega