Lesion contrast enhancement in medical ultrasound imaging.
IEEE Trans Med Imaging
; 16(4): 416-25, 1997 Aug.
Article
em En
| MEDLINE
| ID: mdl-9262999
ABSTRACT
Methods for improving the contrast-to-noise ratio (CNR) of low-contrast lesions in medical ultrasound imaging are described. Differences in the frequency spectra and amplitude distributions of the lesion and its surroundings can be used to increase the CNR of the lesion relative to the background. Automated graylevel mapping is used in combination with a contrast-weighted form of frequency-diversity speckle reduction. In clinical studies, the techniques have yielded mean CNR improvements of 3.2 dB above ordinary frequency-diversity imaging and 5.6 dB over sharper conventional images, with no post-processing graylevel mapping.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aumento da Imagem
/
Hemangioma
/
Fígado
/
Cirrose Hepática
/
Neoplasias Hepáticas
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
Idioma:
En
Revista:
IEEE Trans Med Imaging
Ano de publicação:
1997
Tipo de documento:
Article