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Primer magnetnoresonančnega slikanja pacienta z vstavljenim neferomagnetnim prevodnim implantatom = Magnetic resonance imaging of a patient with a conductive nonferromagnetic implant - case reportPodobnik, Gašper, 1979Introduction: Magnetic resonance imaging (MRI) is a relatively new, rapidly evolving method of displaying the interior of the human body. A powerful static magnetic field, additional gradient fields, ... and pulsed radiofrequency are needed for successful imaging. With additional gradient coils, the MRI signal is spatially encoded. During the MRI imaging of a patient with an electrically conductive implant, this can be a source of torque. Fast gradient switching induces vibrations of the implant, which patients report as a heating sensation. Purpose: The purpose of this paper is to present a case of MRI of the patient with the nonferromagnetic conductive implant. Materials and methods: Breast MRI was performed on a patient with a tibia metal implant. We received a written certificate of the implant from the surgeon. During imaging, the implant was positioned on the edge of the bore. We performed the breast MRI protocol with a diff usion-weighted sequence in an echoplanar imaging technique as the last sequence. Results and discussion: During examination, the patient complained that her leg would explode on the place of the implant. In the literature review, I found reports of significant vibrations of implants that are exposed to fast gradient switching. If we want to reduce vibrations of the implants, we can place the patient's implant closer to the bore centre or outside the influence of the gradient coils. We can use sequences and imaging parameters (longer time echo, longer time repetition, fewer phase-encoding steps, bigger field of view with constant spatial resolution) that use lower power of gradient coils or we can perform imaging on a scanner with lower static magnetic field strength. Conclusion: When we have to perform MRI on patients with conductive implants, we can reduce vibrations by using scanners with lower static magnetic field strength, use sequences and imaging parameters that use lower power of gradient coils, or position the implant parallel to magnetic field lines.Vir: Bilten : strokovno in informativno glasilo Društva radioloških inženirjev Slovenije in Zbornice radioloških inženirjev Slovenije : [glasilo DRI in ZRIS]. - ISSN 1855-5136 (Letn. 36, št 1, 2019, str. 5-7)Vrsta gradiva - članek, sestavni delLeto - 2019Jezik - slovenskiCOBISS.SI-ID - 34411481
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