Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Christopher Beers"'
Autor:
Lars Nordahl Moesner, Borislav Gueorguiev Tomov, Andreas Spandet Havreland, Christopher Beers, Kasper Flong Pedersen, Mathias Engholm, Erik Vilain Thomsen, Jørgen Arendt Jensen
Publikováno v:
2020 IEEE International Ultrasonics Symposium (IUS)
This paper presents the design and fabrication of a novel 384 channel modular ultrasonic probe for row-column addressed capacitive micromachined ultrasound transducers. The nose-piece and front-electronics can be freely interchanged in situ, allowing
Autor:
Borislav Gueorguiev Tomov, Mikkel Schou, Christopher Beers, Matthias Bo Stuart, Jørgen Arendt Jensen, Lasse Thurmann Jorgensen, Marie Sand Traberg
Publikováno v:
Schou, M, Jørgensen, L T, Beers, C, Traberg, M S, Tomov, B G, Stuart, M B & Jensen, J A 2021, ' Fast 3-D Velocity Estimation in 4-D using a 62 + 62 Row-Column Addressed Array ', IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 68, no. 3, pp. 608-623 . https://doi.org/10.1109/TUFFC.2020.3016991
This article presents an imaging scheme capable of estimating the full 3-D velocity vector field in a volume using row-column addressed arrays (RCAs) at a high volume rate. A 62 + 62 RCA array is employed with an interleaved synthetic aperture sequen
Autor:
Christopher Beers, Martin Lind Ommen, Jørgen Arendt Jensen, Mikkel Schou, Niels Bent Larsen, Erik Vilain Thomsen
Publikováno v:
Ommen, M L, Schou, M, Beers, C, Jensen, J A, Larsen, N B & Thomsen, E V 2021, ' 3D printed calibration micro-phantoms for super-resolution ultrasound imaging validation ', Ultrasonics, vol. 114, 106353 . https://doi.org/10.1016/j.ultras.2021.106353
This study evaluates the use of 3D printed phantoms for 3D super-resolution ultrasound imaging (SRI) algorithm calibration. The main benefit of the presented method is the ability to do absolute 3D micro-positioning of sub-wavelength sized ultrasound
Autor:
Borislav Gueorguiev Tomov, Jørgen Arendt Jensen, Christopher Beers, Martin Lind Ommen, Mikkel Schou, Nielse Bent Larsen, Erik Vilain Thomsen, Thomas Sams, Matthias Bo Stuart, Sigrid Husebo Oygard
Publikováno v:
Jensen, J A, Ommen, M L, Øygard, S H, Schou, M, Sams, T, Stuart, M B, Beers, C, Thomsen, E V, Larsen, N B & Tomov, B G 2020, ' Three-Dimensional Super Resolution Imaging using a Row-Column Array ', IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 67, no. 3, pp. 538-546 . https://doi.org/10.1109/TUFFC.2019.2948563
A 3-D super-resolution (SR) pipeline based on data from a row–column (RC) array is presented. The 3-MHz RC array contains 62 rows and 62 columns with a half wavelength pitch. A synthetic aperture (SA) pulse inversion sequence with 32 positive and 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a124bc04888794ca4204c2dfe58db046
https://orbit.dtu.dk/en/publications/41b3c815-d22d-4f1b-8402-c5c33f4c15f5
https://orbit.dtu.dk/en/publications/41b3c815-d22d-4f1b-8402-c5c33f4c15f5
Autor:
Christopher Beers, Mathias Engholm, Hamed Bouzari, Jørgen Arendt Jensen, Erik Vilain Thomsen, Matthias Bo Stuart, Jan Peter Bagge, Lars Nordahl Moesner, Soren Elmin Diederichsen, Thomas Christiansen
Publikováno v:
Engholm, M, Bouzari, H, Christiansen, T L, Beers, C, Bagge, J P, Moesner, L N, Diederichsen, S E, Stuart, M B, Jensen, J A & Thomsen, E V 2018, ' Probe development of CMUT and PZT row-column-addressed 2-D arrays ', Sensors and Actuators A: Physical, vol. 273, pp. 121-133 . https://doi.org/10.1016/j.sna.2018.02.031
This paper presents the characterization of two prototyped fully integrated 62 + 62 row-column-addressed (RCA) 2-D transducer array probes, which are based on capacitive micromachined ultrasonic transducer (CMUT) and on piezoelectric transducer (PZT)
Autor:
Christopher Beers, Niels Bent Larsen, Erik Vilain Thomsen, Jørgen Arendt Jensen, Martin Lind Ommen, Mikkel Schou
Publikováno v:
Ommen, M L, Schou, M, Beers, C, Jensen, J A, Larsen, N B & Thomsen, E V 2019, 3D Printed Calibration Micro-phantoms for Validation of Super-Resolution Ultrasound Imaging . in Proceedings of the IEEE International Ultrasonic Symposium 2019 . IEEE, pp. 1212-1215, 2019 IEEE International Ultrasonics Symposium, Glasgow, United Kingdom, 06/10/2019 . https://doi.org/10.1109/ULTSYM.2019.8926292
This study evaluates the use of 3D printed phantoms for super-resolution ultrasound imaging (SRI) algorithm calibration. Stereolithography is used for printing calibration phantoms containing eight randomly placed scatterers of nominal size 205 µm
Autor:
Thomas Sams, Matthias Bo Stuart, Martin Lind Ommen, Christopher Beers, Niels Bent Larsen, Erik Vilain Thomsen, Jørgen Arendt Jensen, Borislav Gueorguiev Tomov, Mikkel Schou, Sigrid Husebo Oygard
Publikováno v:
Jensen, J A, Schou, M, Ommen, M L, Øygard, S H, Sams, T, Stuart, M B, Thomsen, E V, Larsen, N B, Beers, C & Tomov, B G 2019, 3-D Super Resolution Imaging using a 62+62 Elements Row-Column Array . in Proceedings of 2019 IEEE International Ultrasonics Symposium . IEEE, pp. 1838-1841, 2019 IEEE International Ultrasonics Symposium, Glasgow, United Kingdom, 06/10/2019 . https://doi.org/10.1109/ULTSYM.2019.8926092
Current 2-D Super Resolution (SR) imaging is limited by the slice thickness determined by the elevation focus. The fixed, geometric elevation focus is often poor due to its high F-number. SR images are, thus, a summation of vessels across the elevati
Autor:
Tin-Quoc Nguyen, Jørgen Arendt Jensen, Christopher Beers, Mikkel Schou, Marie Sand Traberg, Matthias Bo Stuart, Sigrid Husebo Oygard, Borislav Gueorguiev Tomov, Martin Lind Ommen, Svetoslav Ivanov Nikolov, Lasse Thumann Jorgensen, Michael Bachmann Nielsen, Niels Bent Larsen, Erik Vilain Thomsen, Kristoffer Lindskov Hansen, Carlos Armando Villagomez Hoyos
Publikováno v:
Jensen, J A, Nikolov, S I, Hansen, K L, Stuart, M B, Hoyos, C A V, Schou, M, Ommen, M L, Øygard, S H, Jørgensen, L T, Traberg, M S, Nguyen, T-Q, Thomsen, E V, Larsen, N B, Beers, C, Tomov, B G & Bachmann Nielsen, M 2019, History and Latest Advances in Flow Estimation Technology: From 1-D in 2-D to 3-D in 4-D . in Proceedings of 2019 IEEE International Ultrasonics Symposium . IEEE, pp. 1041-1050, 2019 IEEE International Ultrasonics Symposium, Glasgow, United Kingdom, 06/10/2019 . https://doi.org/10.1109/ultsym.2019.8926210
Jensen, J A, Sand Traberg, M, Nguyen, T Q, Thomsen, E V, Bent Larsen, N, Beers, C, Tomov, B G, Bachmann Nielsen, M, Ivanov Nikolov, S, Hansen, K L, Bo Stuart, M, Villagomez Hoyos, C A, Schou, M, Ommen, M L, Husebo Oygard, S & Jorgensen, L T 2019, History and Latest Advances in Flow Estimation Technology : From 1-D in 2-D to 3-D in 4-D . in 2019 IEEE International Ultrasonics Symposium, IUS 2019 . IEEE, IEEE International Ultrasonics Symposium, IUS, vol. 2019-October, pp. 1041-1050, 2019 IEEE International Ultrasonics Symposium, IUS 2019, Glasgow, United Kingdom, 06/10/2019 . https://doi.org/10.1109/ULTSYM.2019.8926210
Jensen, J A, Sand Traberg, M, Nguyen, T Q, Thomsen, E V, Bent Larsen, N, Beers, C, Tomov, B G, Bachmann Nielsen, M, Ivanov Nikolov, S, Hansen, K L, Bo Stuart, M, Villagomez Hoyos, C A, Schou, M, Ommen, M L, Husebo Oygard, S & Jorgensen, L T 2019, History and Latest Advances in Flow Estimation Technology : From 1-D in 2-D to 3-D in 4-D . in 2019 IEEE International Ultrasonics Symposium, IUS 2019 . IEEE, IEEE International Ultrasonics Symposium, IUS, vol. 2019-October, pp. 1041-1050, 2019 IEEE International Ultrasonics Symposium, IUS 2019, Glasgow, United Kingdom, 06/10/2019 . https://doi.org/10.1109/ULTSYM.2019.8926210
Ultrasound imaging of flow has seen a tremendous development over the last sixty years from 1-D spectral displays to color flow mapping and the latest Vector Flow Imaging (VFI). The paper gives an overview of the development from current commercial v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5601ec57356cb69d2062c0d8287f4da
https://orbit.dtu.dk/en/publications/e2e414f9-5c0a-4dee-822d-1cb1004f4f80
https://orbit.dtu.dk/en/publications/e2e414f9-5c0a-4dee-822d-1cb1004f4f80
Autor:
Erik Vilain Thomsen, Simon Holbek, Jørgen Arendt Jensen, Christopher Beers, Thomas Christiansen, Matthias Bo Stuart
Publikováno v:
Holbek, S, Christiansen, T L, Stuart, M B, Beers, C, Thomsen, E V & Jensen, J A 2016, ' 3-D Vector Flow Estimation With Row–Column-Addressed Arrays ', I E E E Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 63, no. 11, pp. 1799-1814 . https://doi.org/10.1109/TUFFC.2016.2582536
Simulation and experimental results from 3-D vector flow estimations for a 62 + 62 2-D row–column (RC) array with integrated apodization are presented. A method for implementing a 3-D transverse oscillation (TO) velocity estimator on a 3-MHz RC arr
Autor:
Andreas Spandet Havreland, Erik Vilain Thomsen, Borislav Gueorguiev Tomov, Jørgen Arendt Jensen, Mathias Engholm, Christopher Beers
Publikováno v:
Engholm, M, Beers, C, Havreland, A S, Tomov, B G, Jensen, J A & Thomsen, E V 2018, A Row–Column-Addressed 2D Probe with an Integrated Compound Diverging Lens . in 2018 IEEE International Ultrasonics Symposium (IUS) . IEEE, 2018 IEEE International Ultrasonics Symposium, Kobe, Japan, 22/10/2018 . https://doi.org/10.1109/ULTSYM.2018.8579955
Planar 2D row–column-addressed (RCA) arrays can be an attractive alternative to fully-populated arrays due to their significantly lower channel count. However, these arrays can only look straight forward, which limits their utility. One way to incr