Heating of non-ferromagnetic total hip endoprostheses during magnetic resonance imaging in an animal model.
To determine the heating effects of magnetic resonance imaging (MRI) on non-ferromagnetic total hip endoprostheses, hip endoprostheses were tested in vitro and in an ex vivo animal model. The MRI protocol on a 1.5 T scanner consisted of five sequences with a total duration of 23 min. The maximum heating of prosthetic material was 0.17 K in vitro and 0.90 K ex vivo; the maximum heating of bone surrounding tissue was 0.73 K ex vivo. Slight heating of the prostheses and the surrounding tissue was noted, which should not have any side effects in patients with titanium total hip endoprostheses.
Drescher
Robert
R
Institute of Diagnostic and Interventional Radiology, Ruhr University, St Josef Hospital, Bochum, Germany.
Kahle
Martin
M
Koester
Odo
O
Titschert
Alexej
A
D000818:Animals; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects; D006622:Hip Prosthesis; D006358:Hot Temperature; D008279:Magnetic Resonance Imaging; D008422:Materials Testing; D023421:Models, Animal