Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Geir Ultveit Haugen"'
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Tissue harmonic imaging is often the preferred ultrasound imaging modality due to its ability to suppress reverberations. The method requires good control of the transmit stage of the ultrasound scanner, as harmonics in the transmitted ultrasound pul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9aeb6764d3bbba80f324838830578ea
https://hdl.handle.net/11250/2996486
https://hdl.handle.net/11250/2996486
Publikováno v:
Proceedings-IEEE Ultrasonics Symposium
Second harmonic imaging relies on the double the transmit frequency being generated as the waves propagate into the tissue. The method requires good control over the transmit system, to suppress 2 nd harmonics transmitted from the transducer. These t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::590ce5cf3979bbe396a8e4c3fb3cc492
https://doi.org/10.1109/ultsym.2017.8092111
https://doi.org/10.1109/ultsym.2017.8092111
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 63(12)
Several clinical settings could benefit from 3-D high frame rate (HFR) imaging and, in particular, HFR 3-D tissue Doppler imaging (TDI). To date, the proposed methodologies are based mostly on experimental ultrasound platforms, making their translati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a062197e53bc128e6aeea22dd0ba34f
https://pubmed.ncbi.nlm.nih.gov/27740479
https://pubmed.ncbi.nlm.nih.gov/27740479
Publikováno v:
2016 IEEE International Ultrasonics Symposium (IUS).
Implementation of 3D high frame rate (HFR) tissue Doppler imaging (TDI) typically requires a fully wired matrix probe. However, such probes remain impractical for use in a clinical setting. Therefore, clinical matrix arrays rely on sub-aperture (SAP)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7134bb358a368a2c39b5c96a04b0759
https://doi.org/10.1109/ultsym.2016.7728385
https://doi.org/10.1109/ultsym.2016.7728385
Publikováno v:
Ultrasonics. 77
Ultrasound thermometry is based on measuring tissue temperature by its impact on ultrasound wave propagation. This study focuses on the use of transducer array channel data (not beamformed) and examines how a layer of increased velocity (heat induced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e265de5f16d2b7f380c756056b1eeb6e
https://pubmed.ncbi.nlm.nih.gov/28167318
https://pubmed.ncbi.nlm.nih.gov/28167318
Publikováno v:
Insights and Methods for 4D Reservoir Monitoring and Characterization. :209-216
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf81e429f8ebc1354ffba87e5f59335e
https://doi.org/10.1190/1.9781560801696.appd
https://doi.org/10.1190/1.9781560801696.appd
Publikováno v:
GEOPHYSICS. 68:1303-1309
Seismic reservoir monitoring has become an important tool in the management of many fields. Monitoring subtle changes in the seismic properties of a reservoir caused by production places strong demands on seismic repeatability. A lack of repeatabilit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff49910392f92485719bf4c08debb841
https://doi.org/10.1190/1.1598123
https://doi.org/10.1190/1.1598123
Publikováno v:
Geophysical Prospecting. 48:763-778
Conventional approximations of reflection traveltimes assume a small offset-to-depth ratio, and their accuracy decreases with increasing offset-to-depth ratio. Hence, they are not suitable for velocity analysis and stacking of long-offset reflection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::413eaed540411a57a0c94b0fbdb157e0
https://doi.org/10.1046/j.1365-2478.2000.00207.x
https://doi.org/10.1046/j.1365-2478.2000.00207.x
Publikováno v:
61st EAGE Conference and Exhibition.
In conventional reflection seismic, data are usually stacked along hyperbolae. The hyperbolic approximation for reflection traveltimes is valid for small offset-to-depth ratios in media with weakly dipping reflectors.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62182b3fb75fd151a472454d0ef40c27
https://doi.org/10.3997/2214-4609.201407917
https://doi.org/10.3997/2214-4609.201407917
Autor:
Geir Ultveit Haugen, Fuhua Yu
Publikováno v:
SEG Technical Program Expanded Abstracts 1998.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cfa1394752cda17d02dab9ea2d5bab0
https://doi.org/10.1190/1.1820637
https://doi.org/10.1190/1.1820637