Výsledky vyhledávání - "J Sokil-Melgar"

Estimation of blood velocity with high frequency ultrasound

Autor: R. Silverman, B.G. Zager, J. Sokil-Melgar, Katherine W. Ferrara, I.M. Aslanidis

Publikováno v: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 43:149-157

In order to map blood velocity in small regions near the transducer, we evaluate the performance of the wideband maximum likelihood (WMLE) strategy and infinite impulse response (IIR) filters for blood velocity estimation with a transducer center fre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0a936b5e10c95c269fd67111d6512b35
https://doi.org/10.1109/58.484474

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Differentiation of breast tumors by ultrasonic tissue characterization

Autor: Ernest J. Feleppa, Mary Rorke, Bernard Sigel, Robert M. Golub, Richard E. Parsons, Jeffrey R. Justin, J Sokil-Melgar, Howard A. Zaren, Hiroshi Kimitsuki

Publikováno v: Journal of Ultrasound in Medicine. 12:601-608

The ability of ultrasonic tissue characterization to differentiate and classify benign and malignant breast tissues in vivo in patients with palpable breast masses and in vitro in excised breast tissue was evaluated. One-hundred and twenty-four in vi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f8b6232d299c9806bb4db71015d185d
https://doi.org/10.7863/jum.1993.12.10.601

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High resolution 3D color flow mapping of breast vasculature

Autor: Michelle B. Plantec, B. Zagar, Katherine W. Ferrara, J. Sokil-Melgar

Publikováno v: Scopus-Elsevier

In order to develop a three dimensional (3D) color flow map of low velocity flow through small vessels, the authors explore the use of a high resolution velocity estimation technique and the use of 3D continuity to reconstruct a single vascular tree.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d8ff8fa0dca9efc11b387cbeed4e9b9
https://doi.org/10.1109/ultsym.1995.495832

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High resolution 3D color flow mapping: applied to the assessment of breast vasculature

Autor: V.R. Algazi, B. Zagar, J. Sokil-Melgar, K. Whittaker Ferrara

Publikováno v: Ultrasound in medicinebiology. 22(3)

In order to develop a three dimensional (3D) color flow map of low velocity flow through small vessels, we explore the use of a high resolution velocity estimation technique and a new technique for the differentiation of regions of flow and stationar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdcccf695921fa5e5401e381fbdae578
https://pubmed.ncbi.nlm.nih.gov/8783461

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Parameter mapping for the detection of disturbed blood flow

Autor: Katherine W. Ferrara, S. Rosenberg, J. Sokil-Melgar, M. Ostromogilsky

Publikováno v: Scopus-Elsevier

Particularly in color flow mapping, the detection of minor stenoses is a significant outstanding challenge. With the goal of spatially mapping changes in velocity and shear rate to locate the source of the flow disturbance, two indicators of the magn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::741c2d0c5380a6c940398a3a20f57ea2
https://pubmed.ncbi.nlm.nih.gov/7571144

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An Experimental Evaluation of the Received Signal from Blood at 50 MHz

Autor: R. Silverman, Bernhard G. Zagar, R. Algazi, J. Sokil-Melgar, K. Whittaker Ferrara

Publikováno v: Ferrara, K. Whittaker; Zagar, B.; Algazi, Ralph; Silverman, R.; & Sokil-Melgar, J.(1994). An Experimental Evaluation of the Received Signal from Blood at 50 MHz. UC Davis: Institute for Data Analysis and Visualization. Retrieved from: http://www.escholarship.org/uc/item/1z84r12x

In order to evaluate the received echoes from blood at high frequencies, we present M-mode images as well as a statistical analysis of the in-vitro and in-vivo signal from blood using a short transmitted pulse with a transducer center frequency of 50

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::188e0f1644da95bc32a666737f503d1e
http://www.escholarship.org/uc/item/1z84r12x

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50 MHz color flow mapping

Autor: Paul A. Dayton, Y. Aslanidis, R. Silverman, B. Zagar, J. Sokil-Melgar, K. Aggarwal, Katherine W. Ferrara

Publikováno v: Scopus-Elsevier

Following our previous work on the estimation of blood velocity using high frequency ultrasound, we demonstrate the generation of in-vivo two dimensional (2D) color flow maps. In this paper, using a transducer with a nominal center frequency of 50 MH

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c86fb46fa81b7749de2a8c93e24a3c6
http://www.scopus.com/inward/record.url?eid=2-s2.0-0029458063&partnerID=MN8TOARS

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