Zobrazeno 1 - 10
of 20
pro vyhledávání: '"M S, Van Lysel"'
Publikováno v:
The International Journal of Cardiac Imaging. 10:113-121
The effects of misregistration artifacts and background corrections on the densitometric measurement of left ventricular ejection fraction (EF) from digital subtraction angiography (DSA) images were studied in 20 patients. Densitometric ejection frac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6122f43f9875af8ea5d0d655015531d
https://doi.org/10.1007/bf01137706
https://doi.org/10.1007/bf01137706
Autor:
James H. Holmes, Patrick A. Turski, Alexey Samsonov, J. E. Lee, Guang-Hong Chen, Julia Velikina, Yan Wu, Catherine J. Moran, C. Mistretta, Andrew L. Alexander, Kevin M. Johnson, Brad T. Christian, O. Nalcioglu, M Supanich, Timothy J. Hall, M. S. Van Lysel, Orhan Unal, Sean B. Fain, Robert A. Kruger, Ethan K. Brodsky, Oliver Wieben, Rafael O'Halloran, Yu-Chien Wu, James A. Zagzebski, Howard A. Rowley, Lauren Keith, F.R. Korosec, Michael A. Speidel, Steven Kecskemeti, Walter F. Block
Publikováno v:
SPIE Proceedings.
During the last eight years our group has developed radial acquisitions with angular undersampling factors of several hundred that accelerate MRI in selected applications. As with all previous acceleration techniques, SNR typically falls as least as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f090bdf3a2df1da13982d8f57a13f5df
https://doi.org/10.1117/12.771413
https://doi.org/10.1117/12.771413
Autor:
V.R. Vorperian, Jang-Zern Tsai, M. S. Van Lysel, Hong Cao, John G. Webster, Michael A. Speidel
Publikováno v:
IEEE transactions on bio-medical engineering. 49(6)
We used the finite-element method (FEM) to model and analyze the resistance between the catheter tip electrode and the dispersive electrode during radio-frequency cardiac catheter ablation for the prediction of myocardium-electrode contact. We includ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42850c7c3c3e69a0eeae5a9a4caca189
https://pubmed.ncbi.nlm.nih.gov/12046696
https://pubmed.ncbi.nlm.nih.gov/12046696
Publikováno v:
International journal of cardiac imaging. 7(1)
Digital subtraction angiography (DSA) allows quantitative analysis of ventricular function via densitometric and parametric imaging techniques. However, DSA is limited by the artifacts in temporal subtraction images that result from patient and cardi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71e73b5c192a963bd20a9cd5c9402568
https://pubmed.ncbi.nlm.nih.gov/1753160
https://pubmed.ncbi.nlm.nih.gov/1753160
Autor:
M. S. Van Lysel
Publikováno v:
IEEE transactions on medical imaging. 10(4)
Dual-energy digital subtraction angiography (DSA) can be performed, with some modifications, using existing systems designed for conventional DSA work. However, the video camera generally found in such installations, the lead oxide vidicon, places si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2289b23dbca6a36d7137aef72ba285a
https://pubmed.ncbi.nlm.nih.gov/18222858
https://pubmed.ncbi.nlm.nih.gov/18222858
Autor:
J F Sackett, W. Kubal, Ching-Shan Lee, M. S. Van Lysel, James T. Dobbins, Andrew B. Crummy, B Bergsjordet, Bruce H. Hasegawa, Charles A. Mistretta, Charles M. Strother, William C. Zarnstorff, Walter W. Peppler
Publikováno v:
Radiology. 147:869-874
Initial clinical results using a digital fluoroscopic implementation of the combined time-energy ("hybrid") subtraction technique are described, with emphasis on carotid and renal imaging. Where patient motion artifacts are due to soft-tissue motion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::377544d57be6aa8cd92857288bb63bcd
https://doi.org/10.1148/radiology.147.3.6342038
https://doi.org/10.1148/radiology.147.3.6342038
Autor:
P D Myerowitz, D. L. Ergun, William C. Zarnstorff, M. S. Van Lysel, Andrew B. Crummy, Charles A. Mistretta, C. G. Shaw
Publikováno v:
Radiology. 142:209-213
The logarithmic amplification of video signals and the availability of data in digital form make digital subtraction videoangiography a suitable tool for videodensitometric estimation of physiological quantities. A system for this purpose was impleme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::adec6878faf4f8968bf6463592aff9e3
https://doi.org/10.1148/radiology.142.1.7031761
https://doi.org/10.1148/radiology.142.1.7031761
Autor:
William C. Zarnstorff, J F Sackett, Charles A. Mistretta, D. L. Ergun, M. S. Van Lysel, C. G. Shaw, William D. Turnipseed, D. Myerowitz, Charles M. Strother, Andrew B. Crummy, Robert A. Kruger
Publikováno v:
IEEE Transactions on Nuclear Science. 27:1042-1046
During the past several years, we have developed dedicated digital algorithms for real time processing of X-ray transmission imaging data obtained from an image intensifier television fluoroscopy system. Three imaging modes called Mask Mode Fluorosco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9fc7fce2581820c2a11ef6bf9392177
https://doi.org/10.1109/tns.1980.4330975
https://doi.org/10.1109/tns.1980.4330975
Autor:
Walter W. Peppler, M. S. Van Lysel, P D Myerowitz, C. Mistretta, Dhanani Sp, David K. Swanson, Bruce H. Hasegawa
Publikováno v:
Radiology. 147:37-43
Left ventricular ejection fractions were determined following eight intravenous injections in three dogs using area/length and digital videodensitometric techniques. Ejection fractions were measured by both techniques for all beats during left ventri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83b8a89829f82d76f1e1b03bb8d7cdc6
https://doi.org/10.1148/radiology.147.1.6338564
https://doi.org/10.1148/radiology.147.1.6338564
Autor:
M. S. Van Lysel, C. S. Lee, Walter W. Peppler, B. H. Hasegawa, Charles A. Mistretta, B. Kudva, James T. Dobbins
Publikováno v:
SPIE Proceedings.
In digital fluorographic techniques the video camera must accommodate a wide dynamic range due to the large variation in the subject thickness within the field of view. Typically exposure factors and the optical aperture are selected such that the ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07da9a157dda56ddc5729ac85b80c8fb
https://doi.org/10.1117/12.933815
https://doi.org/10.1117/12.933815