Answer
A cikin aikace-aikacen MRI, abubuwan da aka gyara dole ne su zama marasa maganadisu don guje wa karkatar da filin maganadisu kuma don hana 'tasirin aikin' inda aka ja sassan zuwa maganadisu. Daidaitaccen ƙarfe na carbon da 400-jerin bakin karfe suna da ferromagnetic kuma basu dace ba. 316 Bakin Karfe gabaɗaya ba Magnetic bane (permeability $ \ mu <1.01$), amma aikin sanyi na iya haifar da maganadisu ta hanyar samuwar martensite. Don haka, don buƙatun 'Zero-Magnetic', kayan kamar Beryllium Copper (CuBe) ko MP35N an fi so. CuBe (alloy 25) yana ba da kyawawan kaddarorin bazara kuma ya kasance gaba ɗaya maras maganadisu ba tare da la'akari da aikin sanyi ko magani mai zafi ba, yana mai da shi ma'aunin masana'antu don maɓuɓɓugan ruwan raƙuman ruwa masu jituwa na MRI.
