Zobrazeno 1 - 10
of 58
pro vyhledávání: '"David Vilkomerson"'
Publikováno v:
Lecture Notes in Electrical Engineering ISBN: 9783030119720
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Doppler ultrasound techniques play an important role in the investigation of blood flow and, in recent decades, have become standards in cardiovascular medicine. In current clinical practice, an arterial stenosis is evaluated from the maximum blood v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5fc4344fe90ce577ff4319a589e1a58
https://doi.org/10.1007/978-3-030-11973-7_45
https://doi.org/10.1007/978-3-030-11973-7_45
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 62:686-696
Ultrasound blood peak velocity estimates are routinely used for diagnostics, such as the grading of a stenosis. The peak velocity is typically assessed from the Doppler spectrum by locating the highest frequency detectable from noise. The selected fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0613058fedd2371864f7fb380503772e
https://doi.org/10.1109/tuffc.2015.006982
https://doi.org/10.1109/tuffc.2015.006982
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 60:2079-2088
The signal backscattered by blood cells crossing a sample volume produces a Doppler power spectrum determined by the scatterers¿ velocity distribution. Because of intrinsic spectral broadening, the peak Doppler frequency observed does not correspond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cc67ebecb504907553e5b677559662e
https://doi.org/10.1109/tuffc.2013.2798
https://doi.org/10.1109/tuffc.2013.2798
Autor:
Hao-Chung Yang, David Vilkomerson, Sung W. Ham, Fred A. Weaver, Vincent L. Rowe, Thomas Chilipka, Jonathan M. Cannata, K. Kirk Shung, Sukgu M. Han
Publikováno v:
Journal of Ultrasound in Medicine. 31:1795-1802
We have developed a blood flow measurement system using Doppler ultrasound flow sensors fabricated of thin and flexible piezoelectric-polymer films. These flow sensors can be wrapped around a blood vessel and accurately measure flow. The innovation t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2db89db6d255a1dfe398d7e064eacf1b
https://doi.org/10.7863/jum.2012.31.11.1795
https://doi.org/10.7863/jum.2012.31.11.1795
Publikováno v:
2014 IEEE International Ultrasonics Symposium.
Implantable active devices use batteries for power, requiring expensive and unwieldy metal enclosures. Some such devices are re-charged via magnetic fields, but require external coils to be close to and well aligned with internal coils. We show here
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7890aa7533b3e9f7e7ec480d74b00acc
https://doi.org/10.1109/ultsym.2014.0402
https://doi.org/10.1109/ultsym.2014.0402
Publikováno v:
2014 IEEE International Ultrasonics Symposium.
The peak blood velocity is used in important diagnostic applications, e.g. for determining the stenosis degree. The peak velocity is typically assessed by detecting the highest frequency in the Doppler spectrum. The selected frequency is then convert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa72a908b1c043e087e06232742635a0
https://doi.org/10.1109/ultsym.2014.0559
https://doi.org/10.1109/ultsym.2014.0559
Publikováno v:
Journal of Interventional Cardiac Electrophysiology. 5:203-209
Background: The utility of echocardiography for catheter guidance during percutaneous endocardial ablation is increasingly apparent. However, the technique is currently imperfect due to limitations in discerning the ablation electrode from other part
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a626ed0b7dec38f1c748381dd2c18896
https://doi.org/10.1023/a:1011441827585
https://doi.org/10.1023/a:1011441827585
Publikováno v:
2012 IEEE International Ultrasonics Symposium.
This paper describes the development of a flow-measuring system percutaneously placed and held inside an artery with a stent. The particular challenges of this application have led to a configuration and fabrication technique that may be useful in de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::075129992906adb648acdf30e47c6cd9
https://doi.org/10.1109/ultsym.2012.0288
https://doi.org/10.1109/ultsym.2012.0288
Publikováno v:
2011 IEEE International Ultrasonics Symposium.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4ef5202cfd37306046961741403d8fb
https://doi.org/10.1109/ultsym.2011.0066
https://doi.org/10.1109/ultsym.2011.0066
Publikováno v:
2010 IEEE International Ultrasonics Symposium.
This paper describes the design, fabrication, and experimental results of a novel transducer for measuring intravascular blood flow. The transducer consists of a diffraction-grating transducer, to provide vector Doppler capability, wrapped around a c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87f94980558df1334a4b84b6b631cd66
https://doi.org/10.1109/ultsym.2010.5935598
https://doi.org/10.1109/ultsym.2010.5935598