Advancing MRI Capacitors: Design, Fabrication, and Characterization

Advancing MRI Capacitors: Design, Fabrication, and Characterization | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Advancing MRI Capacitors: Design, Fabrication, and Characterization Zaineb JEBRI, Mahfoudh TALEB ALI, Nistler Juergen This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3843221/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 01 Mar, 2024 Read the published version in The Journal of Engineering → Version 1 posted You are reading this latest preprint version Abstract In today's healthcare landscape, MRI (magnetic resonance imaging) plays a pivotal role in early diagnosis and treatment decisions. However, the quest for higher frequencies to achieve micron-level resolutions poses technological challenges. This paper focuses on coils and capacitors, with special attention to air gap considerations for movable electrodes. The paper delves into the development of adjustable capacitors using high-fired NP0 ceramic, tailored for 128 MHz MRI systems. These capacitors boast impressive specs: a 3 kV breakdown voltage (VBreakdown), a 3 pF minimum capacitance (Cmin), a 30 pF maximum capacitance (CMax), and a 1.5 pF stepwise capacitance variation (Cvariation step). Notably, they enhance breakdown voltage while preserving frequency stability with MgTiCa ceramic between the fixer and mobile electrode, critical for adaptive blocks. Leveraging geometrical parameters analyzed through the ANSYS simulator, we meticulously designed an optimized 25-40 pF capacitor with a 15mm height and 1600 mm2 surface area. Post-fabrication and sintering, extensive testing using a vector network analyzer across 10 MHz to 100 MHz validated performance against simulated expectations. MRI trimmers adjustable capacitors resonance frequency breakdown Full Text Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Published Journal Publication published 01 Mar, 2024 Read the published version in The Journal of Engineering → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-3843221","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":266131519,"identity":"26d7c59b-0337-46eb-ace2-85024701c05a","order_by":0,"name":"Zaineb JEBRI","email":"data:image/png;base64,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","orcid":"https://orcid.org/0000-0001-7665-5204","institution":"Bordeaux university","correspondingAuthor":true,"prefix":"","firstName":"Zaineb","middleName":"","lastName":"JEBRI","suffix":""},{"id":266131520,"identity":"13c6346d-deda-4928-b8d8-af6d1747cced","order_by":1,"name":"Mahfoudh TALEB ALI","email":"","orcid":"https://orcid.org/0009-0009-6313-8262","institution":"university of bordeaux","correspondingAuthor":false,"prefix":"","firstName":"Mahfoudh","middleName":"TALEB","lastName":"ALI","suffix":""},{"id":266131692,"identity":"ba545fb2-3d60-436b-8d9b-7e4129e790cd","order_by":2,"name":"Nistler Juergen","email":"","orcid":"https://orcid.org/0000-0001-7713-4611","institution":"Siemens Healthineers","correspondingAuthor":false,"prefix":"","firstName":"Nistler","middleName":"","lastName":"Juergen","suffix":""}],"badges":[],"createdAt":"2024-01-07 18:13:20","currentVersionCode":1,"declarations":{"humanSubjects":false,"vertebrateSubjects":false,"conflictsOfInterestStatement":false,"humanSubjectEthicalGuidelines":false,"humanSubjectConsent":false,"humanSubjectClinicalTrial":false,"humanSubjectCaseReport":false,"vertebrateSubjectEthicalGuidelines":false},"doi":"10.21203/rs.3.rs-3843221/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3843221/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1049/tje2.12366","type":"published","date":"2024-03-01T06:42:20+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":53143810,"identity":"2031ffd4-466a-4b5b-9f82-59d1d55823f6","added_by":"auto","created_at":"2024-03-21 06:42:26","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":502445,"visible":true,"origin":"","legend":"","description":"","filename":"3AdvancingMRICapacitorsDesignFabricationandCharacterization.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3843221/v1_covered_e3dd6458-fc9c-41dd-999b-b740cfbbf8c0.pdf"}],"financialInterests":"The authors declare no competing interests.","formattedTitle":"\u003cp\u003e\u003cstrong\u003eAdvancing MRI Capacitors: Design, Fabrication, and Characterization\u003c/strong\u003e\u003c/p\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":false,"highlight":"","institution":"University of Bordeaux","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"MRI, trimmers, adjustable capacitors, resonance frequency, breakdown ","lastPublishedDoi":"10.21203/rs.3.rs-3843221/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3843221/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn today's healthcare landscape, MRI (magnetic resonance imaging) plays a pivotal role in early diagnosis and treatment decisions. 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