Читать книгу Essentials of MRI Safety - Donald W. McRobbie - Страница 73

The situation for a ferromagnetic object is complicated by two additional factors: demagnetization factors which depend strongly upon geometry, and saturation: the degree of magnetization sustainable by the metal. In this section we quote the final results as applied to a cylinder or ellipsoid with equal minor axes (1). Appendix 1 provides a full derivation.