By J. Thomas Vaughan, John R. Griffiths
The content material of this quantity has been extra to eMagRes (formerly Encyclopedia of Magnetic Resonance) - the last word on-line source for NMR and MRI.
To date there is not any unmarried reference aimed toward educating the artwork of functions guided coil layout to be used in MRI. This RF Coils for MRI handbook is meant to develop into this reference.
Heretofore, a lot of the knowledge of RF coil layout is bottled up in quite a few and educational laboratories around the globe. a few of this data on coil applied sciences and functions concepts has been disseminated during the literature, whereas extra of this data has been withheld for aggressive or proprietary virtue. Of the broadcast works, the list of know-how improvement is usually incomplete and deceptive, actual referencing and attribution project being tantamount to admission of patent infringement within the advertisement arena. hence, the literature on RF coil layout is fragmented and confusing. There are not any texts and few classes provided to educate this fabric. Mastery of the paintings and technology of RF coil layout could be most sensible accomplished during the studying that includes an extended profession within the box at a number of locations of employment…until now.
RF Coils for MRI combines the lifetime knowing and services of some of the senior designers within the box right into a unmarried, sensible education guide. It informs the engineer on half numbers and resources of part fabrics, apparatus, engineering prone and consulting to allow a person with electronics bench adventure to construct, try and interface a coil. The guide teaches the MR process person tips on how to effectively and effectively enforce the coil for its meant software. the excellent articles additionally comprise details required via the scientist or doctor to foretell respective test or medical functionality of a coil for numerous universal applications. it's anticipated that RF Coils for MRI turns into a tremendous source for engineers, technicians, scientists, and physicians desirous to accurately and effectively purchase or construct and use MR coils within the health facility or laboratory. equally, this guidebook offers educating fabric for college kids, fellows and citizens eager to larger comprehend the idea and operation of RF coils.
Many of the articles were written via the pioneers and builders of coils, arrays and probes, so this can be all first hand info! The instruction manual serves as an expository consultant for hands-on radiologists, radiographers, physicians, engineers, clinical physicists, technologists, and for a person with pursuits in construction or determining and utilizing RF coils to accomplish top scientific or experimental results.
About EMR Handbooks / eMagRes Handbooks
The Encyclopedia of Magnetic Resonance (up to 2012) and eMagRes (from 2013 onward) post quite a lot of on-line articles on all elements of magnetic resonance in physics, chemistry, biology and medication. The lifestyles of this massive variety of articles, written via specialists in numerous fields, is permitting the e-book of a sequence of EMR Handbooks / eMagRes Handbooks on particular components of NMR and MRI. The chapters of every of those handbooks will contain a delicately selected number of articles from eMagRes. In session with the eMagRes Editorial Board, the EMR Handbooks / eMagRes Handbooks are coherently deliberate prematurely by means of specially-selected Editors, and new articles are written (together with updates of a few already latest articles) to provide applicable whole assurance. The handbooks are meant to be of price and curiosity to analyze scholars, postdoctoral fellows and different researchers studying concerning the clinical quarter in query and project suitable experiments, no matter if in academia or industry.
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2001, 45, 692. 16. O. Ocali and E. Atalar, Magn. Reson. , 1998, 39, 462. 17. R. W. Singerman, T. J. Denison, H. Wen, and R. S. Balaban, J. Magn. , 1997, 125, 72. 18. F. Wiesinger, P. Boesiger, and K. P. Pruessmann, Magn. Reson. , 2004, 52, 376. 19. E. M. Haacke, R. W. Brown, M. R. Thompson, and R. Venkatesan, Magnetic Resonance Imaging—Physical Principles and Sequence Design, Wiley-Liss: New York, 1999, p 455. 20. E. Mairiang, P. Hanpanicha, and P. Sriboonlue, Magn. Reson. Imaging, 2004, 22, 715.
In principle, the use of several capacitors in series with these elements, rather than a single capacitor, means that the conservative electric field entering the patient is kept to a minimum, and frequency shifts between the unloaded and loaded coils are similarly minimized. 5) Cseg = Lloop 0 From simple electrical circuit theory, if two circuits resonating at the same frequency (f0 ) are brought into close proximity, then the resonances will split, with one frequency being shifted above f0 and the other below f0 .
A typical application is that of “figure 8” coils used, for example, as large-scale surface coils for detection of underground water. In an early application, the author participated in setting up such a coil in Siberia. A 100 m diameter loop was twisted to form a “figure 8” with two opposed loops of diameter 50 m. Several of us placed ourselves around one loop and pulled on it to change its shape (and, therefore, its area) to change the far-field noise pickup as monitored by an operator at the console.