| Magnetic resonance elastography hardware design: a survey. | |
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MedLine Citation:
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PMID: 19499839 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Magnetic resonance elastography (MRE) is an emerging technique capable of measuring the shear modulus of tissue. A suspected tumour can be identified by comparing its properties with those of tissues surrounding it; this can be achieved even in deep-lying areas as long as mechanical excitation is possible. This would allow non-invasive methods for cancer-related diagnosis in areas not accessible with conventional palpation. An actuating mechanism is required to generate the necessary tissue displacements directly on the patient in the scanner and three different approaches, in terms of actuator action and position, exist to derive stiffness measurements. However, the magnetic resonance (MR) environment places considerable constraints on the design of such devices, such as the possibility of mutual interference between electrical components, the scanner field, and radio frequency pulses, and the physical space restrictions of the scanner bore. This paper presents a review of the current solutions that have been developed for MRE devices giving particular consideration to the design criteria including the required vibration frequency and amplitude in different applications, the issue of MR compatibility, actuation principles, design complexity, and scanner synchronization issues. The future challenges in this field are also described. |
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Authors:
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Z T H Tse; H Janssen; A Hamed; M Ristic; I Young; M Lamperth |
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Publication Detail:
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Type: Journal Article; Review |
Journal Detail:
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Title: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine Volume: 223 ISSN: 0954-4119 ISO Abbreviation: Proc Inst Mech Eng H Publication Date: 2009 May |
Date Detail:
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Created Date: 2009-06-08 Completed Date: 2009-07-07 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8908934 Medline TA: Proc Inst Mech Eng H Country: England |
Other Details:
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Languages: eng Pagination: 497-514 Citation Subset: IM |
Affiliation:
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Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK. t.tse06@imperial.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Elasticity Imaging Techniques
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instrumentation*,
methods Equipment Design Equipment Failure Analysis Image Enhancement / instrumentation* Image Interpretation, Computer-Assisted / instrumentation* Magnetics / instrumentation* Pattern Recognition, Automated / methods* Reproducibility of Results Sensitivity and Specificity Transducers* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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