# US 8,786,281 B2 · Avoidance of susceptibility artifacts in magnetic resonance measurements via targeted addition of recycled materials in plastic parts > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,786,281 B2 - Document ID: US8786281B2 - Status: Granted - Kind: B2 - Application number: 13/343,829 - Filed: 2012-01-05 - Published: 2013-07-11 - Granted: 2014-07-22 - Earliest claimed: 2012-01-05 - Assignees: Siemens Aktiengesellschaft - Applicants: Sebastian Koeppl; Klaus Porzelt; Adelbert Preissler - Inventors: Sebastian Koeppl; Klaus Porzelt; Adelbert Preissler - Web page: https://patentgrep.com/patent/US8786281B2 ## CPC - G01R 33/56536: {due to magnetic susceptibility variations} - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract Susceptibility artifacts are significantly reduced or avoided in a magnetic resonance image by producing one or more components of a magnetic resonance system from plastic material having a targeted addition or recycled plastic material. ## Claims ### Claim 1 A magnetic resonance-compatible component, comprising: a component body configured to form a part of a magnetic resonance image data acquisition apparatus in which a static, homogeneous, multi-Tesla magnetic field is generated; and said component body comprising a mixture of non-recycled glass fiber-containing plastic material and recycled glass fiber-containing plastic material that substantially precludes said part from producing a susceptibility artifact in an image reconstructed from magnetic resonance image data acquired with said magnetic resonance image data acquisition apparatus. ### Claim 2 (depends on 1) A component as claimed in claim 1 wherein said mixture of non-recycled glass fiber-containing plastic material and said recycled glass fiber-containing plastic material gives said component body a magnetic permeability substantially equal to 1. ### Claim 3 (depends on 1) A component as claimed in claim 1 wherein said non-recycled glass fiber-containing plastic material and said recycled glass fiber-containing plastic material are polyamide 6 with glass fibers. ### Claim 4 (depends on 1) A component as claimed in claim 1 wherein said non-recycled glass fiber-containing plastic material and said recycled glass fiber-containing plastic material are polyamide 6 with 30% glass fibers. ### Claim 5 (depends on 4) A component as claimed in claim 4 wherein said mixture comprises 50% by weight of non-recycled polyamide 6 with glass fibers and 50% by weight of recycled polyamide 6 with glass fibers. ### Claim 6 (depends on 1) A component as claimed in claim 1 wherein said mixture comprises 50% by weight of said non-recycled glass fiber-containing plastic material and 50% by weight of said recycled glass fiber-containing plastic material. ### Claim 7 A magnetic resonance system comprising: a magnetic resonance data acquisition unit operable to acquire magnetic resonance data from a subject, said magnetic resonance data acquisition apparatus comprising a basic field magnet that generates a static, homogenous, multi-Tesla magnetic field in which the subject is located while said magnetic resonance image data are acquired from the subject; said magnetic resonance image data acquisition apparatus comprising a component body configured to form a part of said magnetic resonance image data acquisition apparatus; and said component body comprising a mixture of non-recycled glass fiber-containing plastic material and recycled glass fiber-containing plastic material that substantially precludes said part from producing a susceptibility artifact in an image reconstructed from magnetic resonance image data acquired with said magnetic resonance image data acquisition apparatus. ### Claim 8 (depends on 7) A magnetic resonance system as claimed in claim 7 wherein said mixture of non-recycled glass fiber-containing plastic material and said recycled glass fiber-containing plastic material gives said component body a magnetic permeability substantially equal to 1. ### Claim 9 (depends on 8) A magnetic resonance system as claimed in claim 8 wherein said non-recycled glass fiber-containing plastic material and said recycled glass fiber-containing plastic material are polyamide 6 with glass fibers. ### Claim 10 (depends on 9) A magnetic resonance system as claimed in claim 9 wherein said non-recycled glass fiber-containing plastic material and said recycled glass fiber-containing plastic material are polyamide 6 with 30% glass fibers. ### Claim 11 (depends on 10) A magnetic resonance system as claimed in claim 10 wherein said mixture comprises 50% by weight of non-recycled polyamide 6 with glass fibers and 50% by weight of recycled polyamide 6 with glass fibers. ### Claim 12 (depends on 7) A magnetic resonance system as claimed in claim 7 wherein said mixture comprises 50% by weight of said non-recycled glass fiber-containing plastic material and 50% by weight of said recycled glass fiber-containing plastic material. ### Claim 13 A method for fabricating a magnetic resonance-compatible component, comprising: mixing granulates of non-recycled glass fiber-containing plastic material with granulates of recycled glass fiber-containing plastic material to form a mixture comprising approximately 50% by weight of said non-recycled glass fiber-containing plastic material and approximately 50% by weight of said recycled glass fiber-containing plastic material; and providing said mixture as a material input to an injection molder and, in said injection molder, producing a component body configured to form a part of a magnetic resonance image data acquisition apparatus. ### Claim 14 A method for reducing susceptibility artifacts in a magnetic resonance image, comprising: configuring a component body to form a part of a magnetic resonance image data acquisition apparatus in which a static, homogeneous, multi-Tesla magnetic field is generated; forming said component body from a mixture of non-recycled glass fiber-containing plastic material and recycled glass fiber-containing plastic material that substantially precludes said part from producing a susceptibility artifact in an image reconstructed from magnetic resonance image data acquired with said magnetic resonance image data acquisition apparatus; operating the magnetic resonance image data acquisition apparatus to acquire magnetic resonance image data from a subject in said magnetic resonance image data acquisition apparatus; and in a processor, reconstructing a magnetic resonance image of the subject from the acquired magnetic resonance image data to produce a reconstructed magnetic resonance image that is substantially free of susceptibility artifacts.