Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Todd, Fjield"'
Autor:
Cheryl R. Hann, David Haffner, Michael P. Fautsch, Hal Heitzmann, Todd Fjield, Cindy K. Bahler
Publikováno v:
American Journal of Ophthalmology. 153:1206-1213
To determine whether a second-generation trabecular meshwork (TM) bypass stent (iStent inject) influences outflow facility in cultured human anterior segments.Prospective laboratory investigation using normal human donor eyes.Human anterior segments
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aafc936d214279d882a035a102af8d6d
https://doi.org/10.1016/j.ajo.2011.12.017
https://doi.org/10.1016/j.ajo.2011.12.017
Autor:
E. Rene Rodriguez, Todd Fjield, Henry R. Halperin, Ronald D. Berger, Hugh Calkins, Robert C. Pacheco, Lars Lickfett, Patrick Lopath, Paul Harhen, Stephen B. Solomon, Glenn Meininger
Publikováno v:
Journal of Interventional Cardiac Electrophysiology. 8:141-148
Introduction: Atrial fibrillation has been shown to initiate from triggers within pulmonary veins. Several studies have documented that electrical isolation of those triggers can lead to maintenance of sinus rhythm. The complication of pulmonary vein
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e996e0e76093765a3d818d86a5cd6a43
https://doi.org/10.1023/a:1023613018185
https://doi.org/10.1023/a:1023613018185
Publikováno v:
Physics in Medicine and Biology. 46:1785-1798
Two numerical models for predicting the temperature elevations resulting from focused ultrasound heating of muscle tissue were tested against experimental data. Both models use the Rayleigh-Sommerfeld integral to calculate the pressure field from a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e73c8d76845d7084a4e68708e1591d0a
https://doi.org/10.1088/0031-9155/46/7/304
https://doi.org/10.1088/0031-9155/46/7/304
Publikováno v:
Physics in Medicine and Biology. 44:1803-1813
Several flat lens designs have been simulated that focus a planar transducer at various depths and angular deflections. The use of flat lenses with planar phased arrays to create multiple focus patterns has also been explored. The simulations have sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13979d8851e8b3a96d105718c134debe
https://doi.org/10.1088/0031-9155/44/7/317
https://doi.org/10.1088/0031-9155/44/7/317
Autor:
Todd Fjield, Kullervo Hynynen
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 44:1157-1167
MRI guided ultrasound surgery requires small surgical equipment volumes to facilitate the treatment of larger patients in the limited space of a conventional MRI magnet. In addition, large focal volumes are required to reduce the treatment time of la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e09a6d152db05795ca46206d3c38d420
https://doi.org/10.1109/58.655641
https://doi.org/10.1109/58.655641
Autor:
Douglas R. Daum, P. Lopath, Vincent Colucci, Todd Fjield, Ferenc A. Jolesz, Kullervo Hynynen, Mark Buchanan, Andrew H. Chung
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 43:1043-1053
The purpose of this paper was to evaluate the in vivo feasibility of using phased arrays for MRI guided ultrasound surgery. Two different array concepts were investigated: a spherically curved concentric ring array to move the focus along the central
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72954814d22da9f029f76f413bc6e91e
https://doi.org/10.1109/58.542049
https://doi.org/10.1109/58.542049
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 45(2)
A driving system has been designed for phased array ultrasound applicators. The system is designed to-operate in the bandwidth 1.2 to 1.8 MHz, with independent channel power control up to 60 W (8 bit resolution) for each array element. To reduce powe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f89d0c94ac59486c29cd6e1becd325b
https://pubmed.ncbi.nlm.nih.gov/18244194
https://pubmed.ncbi.nlm.nih.gov/18244194
Autor:
Glenn R, Meininger, Hugh, Calkins, Lars, Lickfett, Patrick, Lopath, Todd, Fjield, Robert, Pacheco, Paul, Harhen, E Rene, Rodriguez, Ronald, Berger, Henry, Halperin, Stephen B, Solomon
Publikováno v:
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing. 8(2)
Atrial fibrillation has been shown to initiate from triggers within pulmonary veins. Several studies have documented that electrical isolation of those triggers can lead to maintenance of sinus rhythm. The complication of pulmonary vein stenosis has
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::279d234f55f2c5f7f6282a5851212227
https://pubmed.ncbi.nlm.nih.gov/12766506
https://pubmed.ncbi.nlm.nih.gov/12766506
Autor:
Nathaniel M. Fried, David Y. Chan, Theresa L. Nicol, Louis R. Kavoussi, Todd Fjield, Stephen B. Solomon
Publikováno v:
Investigative radiology. 38(5)
Rationale and Objectives The purpose of this study was to examine the histologic evolution over time of rabbit skeletal muscle thermally ablated with high-intensity focused ultrasound. The objectives included determining the extent and focality of da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a83faaa56b739e7ddaca1b70dc172448
https://pubmed.ncbi.nlm.nih.gov/12750619
https://pubmed.ncbi.nlm.nih.gov/12750619
Autor:
K. Hynynen, Todd Fjield
Publikováno v:
1996 IEEE Ultrasonics Symposium. Proceedings.
To meet two of the requirements for MRI Guided Ultrasound Surgery, namely small surgical equipment and large focal volumes, a combined array encompassing the design parameters of the concentric-ring array and the sector-vortex array has been proposed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b867f646480f2f565589776a03842d5
https://doi.org/10.1109/ultsym.1996.584228
https://doi.org/10.1109/ultsym.1996.584228