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  Biopsy needle tips with markers: MR compatible needles for high-precision needle tip positioning

Müller-Bierl, B., Martirosian, P., Graf, H., Boss, A., König, C., Pereira, P., et al. (2008). Biopsy needle tips with markers: MR compatible needles for high-precision needle tip positioning. Medical Physics, 35(6), 2273-2278. doi:10.1118/1.2919082.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-C8C1-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-303D-3
Genre: Journal Article

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Müller-Bierl, B1, 2, Author              
Martirosian, P, Author
Graf, H, Author
Boss, A, Author
König, C, Author
Pereira, P, Author
Schick, F, Author
Affiliations:
1Former Department MRZ, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_2528700              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Needle tip visualization is of high importance in magnetic resonance imaging (MRI) guided interventional procedures, for example for taking biopsies from suspicious lesions in the liver or kidney. The exact position of the needle tip is often obscured by image artifacts arising from the magnetic properties of the needle. The authors investigated two special biopsy needle tip designs using diamagnetic coatings. For common interventional MR sequences, the needle tip can be identified in the MR image by several equidistant dark spots arranged along a straight line. A dotted instead of a solid line allows for an improved control of the movement of the needle, not only if the needle is tilted toward the imaging plane, but also if the needle leaves an empty canal with signal extinction, which cannot be distinguished from the needle material itself. With the proposed design the position of the needle tip can be estimated with a precision of approximately 1 mm using conventional FLASH, FISP, and TSE sequences, as use d for interventional MR. Furthermore, the size of the biopsy probe can be estimated from the artifact. In using needles with a properly designed tip coating, taking biopsies under MR control is beginning to be greatly simplified. The approach to design artifacts using diamagnetic material in combination with paramagnetic material paves the way toward new instruments and implants, suitably tailored to the needs of the interventional radiologist.

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 Dates: 2008-06
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: DOI: 10.1118/1.2919082
BibTex Citekey: 5440
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Title: Medical Physics
  Other : Med. Phys.
Source Genre: Journal
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Publ. Info: New York, etc. : Published for the American Association of Physicists in Medicine by the American Institute of Physics
Pages: - Volume / Issue: 35 (6) Sequence Number: - Start / End Page: 2273 - 2278 Identifier: ISSN: 0094-2405
CoNE: https://pure.mpg.de/cone/journals/resource/991042742884000