Zobrazeno 1 - 10
of 319
pro vyhledávání: '"Ultrasound beam"'
Publikováno v:
Ultrasound in Medicine & Biology. 47:2346-2359
Ultrasound is widely used in diagnostic and therapeutic medical procedures and it is becoming an important tool in biomedical research. During exposure, as an ultrasound beam interacts with the tissues in its path, changes known as “bioeffects” c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13ee81cf3e636de1b51477c0a81a0d4f
https://doi.org/10.1016/j.ultrasmedbio.2021.04.005
https://doi.org/10.1016/j.ultrasmedbio.2021.04.005
Autor:
Andreas Schuler
Publikováno v:
Chest Sonography ISBN: 9783031094415
Chest Sonography ISBN: 9783540724278
Atlas of Chest Sonography ISBN: 9783662052808
Chest Sonography ISBN: 9783319440712
Chest Sonography ISBN: 9783642212468
Chest Sonography ISBN: 9783540724278
Atlas of Chest Sonography ISBN: 9783662052808
Chest Sonography ISBN: 9783319440712
Chest Sonography ISBN: 9783642212468
The diagnostic outcome of chest ultrasonography is greatly influenced by the investigator’s knowledge and careful handling of artifacts in the B-mode image (and color Doppler).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fed26096de359d5f996e7e2ea75702f3
https://doi.org/10.1007/978-3-031-09442-2_9
https://doi.org/10.1007/978-3-031-09442-2_9
Autor:
Laehoon H. Kang, A.B.M. Aowlad Hossain
Publikováno v:
International Journal Bioautomation, Vol 16, Iss 4, Pp 263-272 (2012)
Commercial medical ultrasound scanners assume average sound velocity of 1540 m/s while sound speed varies at different tissues. This assumption limits focusing quality and degrades contrast and resolution, particularly for patients with fatty abdomin
Externí odkaz:
https://doaj.org/article/55ab481a3df34478a77ae717a4f7d0ff
Autor:
Hlavatý, Radek
The work deals with methods of measuring the parameters of the ultrasonic beam generated by piezoelectric sensors. The theoretical part contains a literature search of methods for the analysis of the ultrasonic beam generated by piezoelectric transdu
Externí odkaz:
http://www.nusl.cz/ntk/nusl-442538
Autor:
Branko Malojcic
Publikováno v:
Neurosonology in Critical Care ISBN: 9783030814182
Solid or gaseous particles backscatter more ultrasound energy than the normal cells in the blood stream. Consequently, when such particles pass through the ultrasound beam, a single or many high-intensity transient signals appear within the Doppler s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0642d10b78bd8aa2183bed0f52709878
https://doi.org/10.1007/978-3-030-81419-9_36
https://doi.org/10.1007/978-3-030-81419-9_36
Autor:
Papachristidis, Alexandros, Queirós, Sandro Filipe Monteiro, Theodoropoulos, Konstantinos C, D'hooge, Jan, Rafter, Patrick, Masoero, Giovanni, Zidros, Spyridon, Pagnano, Gianpiero, Huang, Marilou, Dancy, Luke, Sado, Daniel, Shah, Ajay M., Murgatroyd, Francis D., Monaghan, Mark J.
Myocardial scar appears brighter compared with normal myocardium on echocardiography because of differences in tissue characteristics. The aim of this study was to test how different ultrasound pulse characteristics affect the brightness contrast (i.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______307::cb3f4b80a2746b8b0b954f92ffa0727b
https://hdl.handle.net/1822/76567
https://hdl.handle.net/1822/76567
Publikováno v:
Ultrasound in Medicine and Biology
Clutter in echocardiography hinders the visualization of the heart and reduces the diagnostic value of the images. The detailed mechanisms that generate clutter are, however, not well understood. We present five different hypotheses for generation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f82303f60c02e8a2d399666d8b4d8f1
https://doi.org/10.1016/j.ultrasmedbio.2019.01.010
https://doi.org/10.1016/j.ultrasmedbio.2019.01.010
Autor:
Steven J Jackson, Stephen Russell
Publikováno v:
Ultrasound
A precise, reproducible method for measuring ultrasound probe slice thickness has been developed for linear array ultrasound probes. The method used a custom built jig to draw the probe along the surface of a Gammex 403 phantom, with the image plane
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42ccbde6654adc182ae5261fb12a772e
https://doi.org/10.1177/1742271x19830742
https://doi.org/10.1177/1742271x19830742
Publikováno v:
Izmeritel`naya Tekhnika. :56-61
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ff262691520e9ef6b274274bdf2c7b2
https://doi.org/10.32446/0368-1025it.2019-11-56-61
https://doi.org/10.32446/0368-1025it.2019-11-56-61
Publikováno v:
Journal of Vibration and Acoustics. 143
We numerically investigate the bandwidth and collimation characteristics of ultrasound beams generated by a simple collimated ultrasound beam source that consists of a piezoelectric disk operated near its radial mode resonances. We simulate the ultra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8a91a356ca3280eb6b4c64e1da6b32b
https://doi.org/10.1115/1.4050851
https://doi.org/10.1115/1.4050851