Zobrazeno 1 - 10
of 52
pro vyhledávání: '"John C. Lazenby"'
Publikováno v:
Scopus-Elsevier
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9881247513b6822dd948894532b253e
https://doi.org/10.1016/s1076-6332(98)80062-7
https://doi.org/10.1016/s1076-6332(98)80062-7
Publikováno v:
1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium.
The LOG compression technique is commonly used in medical ultrasound imaging to show the weak scattering signals on the same scale as the strong specular reflections. This transformation changes the statistical nature of the envelope detected signal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53b5590916f9ac3b86d899f55543df3d
https://doi.org/10.1109/ultsym.1995.495811
https://doi.org/10.1109/ultsym.1995.495811
Publikováno v:
2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121).
Data acquisition, time delay estimation and correction for adaptive imaging are implemented on the SONOLINE Elegra/sup TM/ system using the system CPU, the Crescendo(TM) processor, and the existing front-end electronics, with no hardware modification
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e568526115d4e45bb670addfa5b2050
https://doi.org/10.1109/ultsym.2000.921640
https://doi.org/10.1109/ultsym.2000.921640
Publikováno v:
Biomedizinische Technik/Biomedical Engineering. :18-19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::966744e142c2d75cadf5a31c18cfa393
https://doi.org/10.1515/bmte.1998.43.s1.18
https://doi.org/10.1515/bmte.1998.43.s1.18
Autor:
P. Hauff, Michael Zomack, A. Bauer, P. von Behren, Reinhard Schlief, M. Reinhardt, John C. Lazenby
Publikováno v:
European radiology. 9
A novel ultrasonic imaging method, wideband harmonic imaging, for nonlinear imaging of microbubble contrast agents is evaluated. In wideband harmonic mode, two pulses of alternate phase are send out. The image is then processed from the sum of both p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49ee9060075e2259a2dd9b10681460ae
https://pubmed.ncbi.nlm.nih.gov/10602930
https://pubmed.ncbi.nlm.nih.gov/10602930
Publikováno v:
The Journal of the Acoustical Society of America. 130:3180
A plurality of application specific integrated circuit (ASIC) chips with different functions is provided. Each of the ASICs performs one or more functions along an ultrasound data path. The chips include communications protocols or processes for allo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d5db3f253524cb5ada6fdec21778eab
https://doi.org/10.1121/1.3662378
https://doi.org/10.1121/1.3662378
Autor:
Robert N. Phelps, John C. Lazenby
Publikováno v:
The Journal of the Acoustical Society of America. 128:2260
Unipolar, bipolar or sinusoidal transmitters may leave the transmitter in any of various states at the end of one pulse. Undesired acoustic energy may be generated to change states prior to beginning another transmit sequence or pulse. For example, p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63335f662767653983132828fac60f2a
https://doi.org/10.1121/1.3500791
https://doi.org/10.1121/1.3500791
Autor:
David A. Petersen, John C. Lazenby
Publikováno v:
The Journal of the Acoustical Society of America. 126:1649
Different subarray combinations are provided for ultrasound imaging. A basic building block component supports different subarray sizes. Rather than providing a switching network for all possible combinations, a transducer array is divided into super
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b835d60ce66ffbdd83722df0a9b92de6
https://doi.org/10.1121/1.3230491
https://doi.org/10.1121/1.3230491
Autor:
John C. Lazenby, Wayne J. Gueck
Publikováno v:
The Journal of the Acoustical Society of America. 124:710
A location within a volume is determined from medical images. A region of interest or other location is examined from two different viewing directions. The user or processor indicates the region or point of interest in each of the different images. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::162c54d36a8cedb98e1900e3e2950f7a
https://doi.org/10.1121/1.2969646
https://doi.org/10.1121/1.2969646
Publikováno v:
The Journal of the Acoustical Society of America. 120:1774
Spatial derivatives are computed. In one method, gradients are determined from data in an acoustic domain rather than a Cartesian or display coordinate domain. The gradients determined from data in the acoustic domain are then transformed to the Cart
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cd987405cafe5911219040923637484
https://doi.org/10.1121/1.2372404
https://doi.org/10.1121/1.2372404