Zobrazeno 1 - 10
of 238
pro vyhledávání: '"Albert Macovski"'
Publikováno v:
Journal of Magnetic Resonance. 213:544-557
We present here a method for analyzing selective excitation in terms of spatial frequency ( k ) space. Using this analysis we show how to design inherently refocused selective excitation pulses in one and two dimensions. The analysis is based on a sm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3466e2b2ce665a6d13286663e7e88ed
https://doi.org/10.1016/j.jmr.2011.09.023
https://doi.org/10.1016/j.jmr.2011.09.023
Autor:
Albert Macovski
Publikováno v:
Journal of Magnetic Resonance Imaging. 30:919-923
The invention and development of MRI took place under very desirable circumstances. Dr. Lauterbur, a distinguished NMR chemist, conceived of the basic idea. Once this concept was presented to the medical imaging community, a wonderful synergy develop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da1fd3e22862e4039ed1f73558391036
https://doi.org/10.1002/jmri.21962
https://doi.org/10.1002/jmri.21962
Autor:
Steven M. Conolly, Ross D. Venook, Albert Macovski, Greig C. Scott, Sharon E. Ungersma, Nathaniel I. Matter, Thomas Grafendorfer
Publikováno v:
Magnetic Resonance in Medicine. 56:1085-1095
Prepolarized MRI (PMRI) with pulsed electromagnets has the potential to produce diagnostic quality 0.5- to 1.0-T images with significantly reduced cost, susceptibility artifacts, specific absorption rate, and gradient noise. In PMRI, the main magneti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::432eb0ca4c367b4fe9ab434ca6c079d9
https://doi.org/10.1002/mrm.21065
https://doi.org/10.1002/mrm.21065
Autor:
Greig C. Scott, Albert Macovski, Nicholas J. Giori, Nathaniel I. Matter, Steven M. Conolly, Sharon E. Ungersma, Garry E. Gold, Ross D. Venook, Meena Ramachandran
Publikováno v:
Magnetic Resonance in Medicine. 56:177-186
A prepolarized MRI (PMRI) scanner was used to image near metal implants in agar gel phantoms and in in vivo human wrists. Comparison images were made on 1.5- and 0.5-T conventional whole-body systems. The PMRI experiments were performed in a smaller
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d076271d462d3031671f347a2a71522
https://doi.org/10.1002/mrm.20927
https://doi.org/10.1002/mrm.20927
Autor:
Raymond W. Sze, Walter F. Block, Craig H. Meyer, Garry E. Gold, Ann N. Leung, John M. Pauly, Albert Macovski, Paul Stark
Publikováno v:
Journal of Magnetic Resonance Imaging. 15:679-684
Purpose To perform short echo time MR spectroscopic imaging of the lung parenchyma on normal volunteers. Materials and Methods A short echo time projection-reconstruction spectroscopic imaging sequence was implemented on a commercial 1.5T whole body
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8793a4d6c8334cf1a9b7645f5616482
https://doi.org/10.1002/jmri.10113
https://doi.org/10.1002/jmri.10113
Autor:
Shuichiro Kaji, Dwight G. Nishimura, Philip C. Yang, Craig H. Meyer, W. H. Wilson Tang, Adam B. Kerr, Bob S. Hu, John M. Pauly, Albert Macovski
Publikováno v:
Journal of the American College of Cardiology. 38:527-533
OBJECTIVESThe purpose of this study was to validate cardiac measurements derived from real-time cardiac magnetic resonance imaging (MRI) as compared with well-validated conventional cine MRI.BACKGROUNDAlthough cardiac MRI provides accurate assessment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e2066a88396aabb15a7f4372d12031d
https://doi.org/10.1016/s0735-1097(01)01399-7
https://doi.org/10.1016/s0735-1097(01)01399-7
Publikováno v:
IEEE Transactions on Magnetics. 36:476-483
We introduce a technique for designing homogeneous magnets using linear programming, We first show that minimum-power homogeneous magnet design can be cast as a linear programming problem. We also show that the method is applicable to minimum conduct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3faac7f2bd9ec89f5629e63261899a6
https://doi.org/10.1109/20.825817
https://doi.org/10.1109/20.825817
Autor:
Bob S. Hu, John M. Pauly, Craig H. Meyer, Dwight G. Nishimura, Albert Macovski, Todd S. Sachs
Publikováno v:
IEEE Transactions on Medical Imaging. 19:73-79
A graphical user interface (GUI) has been developed which enables interactive feedback and control to the real-time diminishing variance algorithm (DVA). This interactivity allows the user to set scan parameters, view scan statistics, and view image
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67aefd2ebd11f98b58c7a8d235a93799
https://doi.org/10.1109/42.836367
https://doi.org/10.1109/42.836367
Publikováno v:
Magnetic Resonance in Medicine. 42:704-713
Phase contrast velocity imaging is a standard method for accurate in vivo flow measurement. One drawback, however, is that it lengthens the scan time (or reduces the achievable temporal resolution) because one has to acquire two or more images with d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d86de59f9220b7f188deb6089c0303d5
https://doi.org/10.1002/(sici)1522-2594(199910)42:4<704::aid-mrm12>3.0.co
https://doi.org/10.1002/(sici)1522-2594(199910)42:4<704::aid-mrm12>3.0.co
Publikováno v:
Magnetic Resonance in Medicine. 41:1221-1229
A new technique for designing resistive homogeneous multicoil magnets for magnetic resonance imaging (MRI) is presented. A linearly independent subset of coils is chosen from a user-defined feasible set using an efficient numerical algorithm. The coi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::218818e62e2d254595f1dba31a52b65d
https://doi.org/10.1002/(sici)1522-2594(199906)41:6<1221::aid-mrm19>3.0.co
https://doi.org/10.1002/(sici)1522-2594(199906)41:6<1221::aid-mrm19>3.0.co