Hassler M, Le Bas J F, Wolf J E, Contamin C, Waksmann B, Coulomb M
J Radiol. 1986 Oct;67(10):661-6.
The effects of static magnetic fields used in MR imaging at 0.5 Tesla have been studied on 15 different types of cardiac valves. The displacement of the valves was insignificant at 0.5 Tesla. No significant heating effects was observed with the standard sequences used in cardiac imaging. The image artefacts remain confined to the area immediately surrounding these different valves. It seems possible to perform MRI examinations on patient with the prosthetic heart valves without any risk.
已对15种不同类型的心脏瓣膜研究了0.5特斯拉磁共振成像中使用的静磁场的影响。在0.5特斯拉时，瓣膜的位移不明显。使用心脏成像的标准序列未观察到明显的热效应。图像伪影仍局限于这些不同瓣膜周围紧邻的区域。对装有心脏人工瓣膜的患者进行磁共振成像检查似乎没有任何风险。
