Automated In Vivo Sub-Hertz Analysis of Viscoelasticity (SAVE) for Evaluation of Breast Lesions.
IEEE Trans Biomed Eng
; 65(10): 2237-2247, 2018 10.
Article
em En
| MEDLINE
| ID: mdl-29989938
ABSTRACT
We present an automated method for acquiring images and contrast parameters based on mechanical properties of breast lesions and surrounding tissue at load frequencies less than 1 Hz. The method called sub-Hertz analysis of viscoelasticity (SAVE) uses a compression device integrated with ultrasound imaging to perform in vivo ramp-and-hold uniaxial creep-like test on human breast in vivo. It models the internal deformations of tissues under constant surface stress as a linear viscoelastic response. We first discuss different aspects of our unique measurement approach and the expected variability of the viscoelastic parameters estimated based on a simplified one-dimensional reconstruction model. Finite-element numerical analysis is used to justify the advantages of using imaging contrast over viscoelasticity values. We then present the results of SAVE applied to a group of patients with breast masses undergoing biopsy.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Neoplasias da Mama
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Interpretação de Imagem Assistida por Computador
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Ultrassonografia Mamária
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Técnicas de Imagem por Elasticidade
Tipo de estudo:
Diagnostic_studies
Limite:
Female
/
Humans
Idioma:
En
Revista:
IEEE Trans Biomed Eng
Ano de publicação:
2018
Tipo de documento:
Article