| Acoustic pressure wave generation within an MR imaging system: potential medical applications. | |
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MedLine Citation:
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PMID: 1790388 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The static magnetic field of a magnetic resonance (MR) imaging system was used as a component of an electromagnetic transducer for generating acoustic pressure waves. To permit limited focusing, the transducer was constructed from a conductive thin plate shaped like a section of a sphere. The plate was placed within the static field of the MR unit (B0 = 1.5 T), and current pulses with a rise time of 73 nsec and amplitude of 1.0 kA were applied to it. Hydrophonic recording demonstrated a shock wave with a peak pressure of 4.8 MPa at the approximated focal point. MR guidance of lithotripsy would be particularly useful to limit undesirable soft-tissue damage. It is also suggested that the integration of an acoustic pressure wave generator with MR imaging and control provides a novel technology for the treatment of solid soft-tissue tumors. |
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Authors:
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F A Jolesz; P D Jakab |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of magnetic resonance imaging : JMRI Volume: 1 ISSN: 1053-1807 ISO Abbreviation: J Magn Reson Imaging Publication Date: 1991 Sep-Oct |
Date Detail:
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Created Date: 1992-04-02 Completed Date: 1992-04-02 Revised Date: 2000-12-18 |
Medline Journal Info:
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Nlm Unique ID: 9105850 Medline TA: J Magn Reson Imaging Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 609-13 Citation Subset: IM |
Affiliation:
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Department of Radiology, Harvard Medical School, Boston, MA 02115. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustics* Lithotripsy Magnetic Resonance Imaging* / instrumentation, methods |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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