Susceptibility artifacts evaluation for non-metallic biopsy needles in a biological-engineered 3D tumor model

Abstract: Nowadays, needle artifacts are an essential restriction for MRI-guided interventions, as they influence the visually perceived needle size and needle destination. Standard MRI needles made of Nickel-Titanium (NiTi) alloys still produce massive artifacts in MRI due to materials’ interactions with the magnetic environment. The use of non-metallic materials can reduce these artifacts. Therefore, we propose a nonmetallic concept of a coaxial needle design concept with a fiber-enforced inner core and an outer polymeric hollow sheet. This work aims to evaluate the artifact performance of the proposed needles in a custom-made three-dimensional (3D) tumor model with a relevant size and thickness for medical interventions under MRI guidance using a 3T field strength with a T1-weighted gradient-echo sequence. Three coaxial MRcompatible needles were inserted in the custom-made 3D tissue phantom, one standard needle from NiTi, and two proposed non-metallic needles. Artifact’s width and length were measured for each needle. Overall, the non-metallic needles showed significantly lower artifacts than the standard NiTi needle inside the 3D tumor model.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Susceptibility artifacts evaluation for non-metallic biopsy needles in a biological-engineered 3D tumor model ; volume:8 ; number:2 ; year:2022 ; pages:289-292 ; extent:4
Current directions in biomedical engineering ; 8, Heft 2 (2022), 289-292 (gesamt 4)

Creator
Al-Maatoq, Marwah
Fachet, Melanie
Walles, Heike
Hoeschen, Christoph

DOI
10.1515/cdbme-2022-1074
URN
urn:nbn:de:101:1-2022090315402107404298
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:27 AM CEST

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