FDTD simulations for ultrasound propagation in a 2-D breast model.
To increase the survival rates of patients with breast cancer, an ultrasound imaging system must detect tumors when they are small, with a diameter of 5 mm or less. This requires an understanding of how propagation of ultrasound energy is affected by the complex structure of the breast. In this pape...
| Publicado en: | Ultrasonic Imaging Vol. 18; no. 1; pp. 25 - 35 |
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| Autores principales: | , , , |
| Formato: | pictorial tables/charts tracings Journal Article |
| Publicado: |
Sage Publications Inc.
1996 Jan
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=107392380&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 107392380 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01617346 2HF jtl: Ultrasonic Imaging issn: 01617346 maglogo: Y pubinfo: dt: 1996 Jan vid: 18 iid: 1 pid: 344 pub: Sage Publications Inc. place: Thousand Oaks, California artinfo: ui: 107392380 107392380 NLM8792561 1996042564 NLM8792561 107392380 ppf: 25 ppct: 10 formats: tig: atl: FDTD simulations for ultrasound propagation in a 2-D breast model. aug: au: Manry CW Jr. Broschat SL Manry, C W Jr Broschat, S L affil: School of Electrical Engineering and Computer Science, Washington State University, Pullman 99164-2752, USA sug: subj: Ultrasonography Methods Image Enhancement Breast Ultrasonography Funding Source Models, Structural Breast Neoplasms Ultrasonography Breast Neoplasms Diagnosis Mammography Methods ab: To increase the survival rates of patients with breast cancer, an ultrasound imaging system must detect tumors when they are small, with a diameter of 5 mm or less. This requires an understanding of how propagation of ultrasound energy is affected by the complex structure of the breast. In this paper, a Finite-Difference Time-Domain (FDTD) method is developed to simulate ultrasound propagation in a two-dimensional model of the human breast. The FDTD simulations make it possible to better understand the behavior of an ultrasound signal in the breast. For example, here the simulations are used to investigate the effect of fat lobes adjacent to the skin layer in a simple breast model. Experimental work performed at the University of Pennsylvania has shown that strong refraction caused by the fat lobes results in nulls in the forward transmitted field. This result was duplicated with the FDTD simulations, and it was shown that the effect of refraction is clearly evident for energy exiting the breast. The existence of strong refraction has a significant impact on ultrasound imaging since it implies that an imaging method based on a weak scattering assumption is unlikely to work well. pubtype: Academic Journal doctype: pictorial tables/charts tracings Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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