Image formation in vibro-acoustography with depth-of-field effects

Glauber T. Silva, Alejandro C. Frery, Mostafa Fatemi

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We study the image formation of vibro-acoustography systems based on a concave sector array transducer taking into account depth-of-field effects. The system point-spread function (PSF) is defined in terms of the acoustic emission of a point-target in response to the dynamic radiation stress of ultrasound. The PSF on the focal plane and the axis of the transducer are presented. To extend the obtained PSF to the 3D-space, we assume it is a separable function in the axial direction and the focal plane of the transducer. In this model, an image is formed through the 3D convolution of the PSF with an object function. Experimental vibro-acoustography images of a breast phantom with lesion-like inclusions were compared with simulated images. Results show that the experimental images are in good agreement with the proposed model.

Original languageEnglish (US)
Pages (from-to)321-327
Number of pages7
JournalComputerized Medical Imaging and Graphics
Volume30
Issue number5
DOIs
StatePublished - Jul 2006

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Elasticity Imaging Techniques
Optical transfer function
Transducers
Image processing
Acoustics
Breast
Acoustic emissions
Convolution
Ultrasonics
Radiation

Keywords

  • Image formation
  • Point-spread function
  • Vibro-acoustography

ASJC Scopus subject areas

  • Computer Science Applications
  • Radiology Nuclear Medicine and imaging

Cite this

Image formation in vibro-acoustography with depth-of-field effects. / Silva, Glauber T.; Frery, Alejandro C.; Fatemi, Mostafa.

In: Computerized Medical Imaging and Graphics, Vol. 30, No. 5, 07.2006, p. 321-327.

Research output: Contribution to journalArticle

Silva, Glauber T. ; Frery, Alejandro C. ; Fatemi, Mostafa. / Image formation in vibro-acoustography with depth-of-field effects. In: Computerized Medical Imaging and Graphics. 2006 ; Vol. 30, No. 5. pp. 321-327.
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