In-vitro- und Patientenuntersuchungen mittels MRT: Bedeutung metallischer Implantate

Autor:	Weikl A, F. Wolf, J. Grebmeier, Hofmann-Preiss K, Huk Wj, Glückert K, Roedl W
Rok vydání:	1991
Předmět:	medicine.medical_specialty medicine.diagnostic_test business.industry medicine.medical_treatment Magnetic resonance imaging Mr imaging Prosthesis Surgery Vascular clips Harrington rod Orthopedic surgery Medicine Radiology Nuclear Medicine and imaging In patient Implant business Nuclear medicine
Zdroj:	RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 154:484-488
ISSN:	1438-9010 1438-9029
DOI:	10.1055/s-2008-1033171
Popis:	This study presents the results of in-vitro and clinical experiences with metallic implants during MRT investigations. In-vitro temperature measurements of various implants showed little temperature rise depending on the shape and the orientation in the static magnetic field (max. 0.3 degrees C). Ferromagnetic forces could not be detected with these implants. In contrast, severe temperature increase (9.4 degrees C) was observed with an intratracheal spiral tube. Tubes of this type should not be used in MR imaging to avoid the risk of burning. 105 MR examinations were performed in patients with metallic implants (CNS shunts, aortocoronary bypass grafts, aortic-, mitral-prosthesis, orthopedic implants, skin staples, shrapnels). Patients with vascular clips were accepted for MR imaging when the clips were non-ferromagnetic only. No adverse effects were observed in these patients.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2ff3e97ed9204cca6b7eeb69a0b8f828 https://doi.org/10.1055/s-2008-1033171 Zobrazit plný text záznamu