Adiabatic off-resonance spin-locking for enhanced tumor contrast in NMR imaging

摘要

Contrast between tumor and normal fat and normal fibro-glandular breast tissues is enhanced in an NMR image by a preparatory pulse sequence executed prior to the imaging pulse sequence. An off-resonance spin-locking RF pulse is employed to enhance contrast between fibro-glandular tissue and tumors and an inversion recovery sequence is employed to enhance contrast between fat and tumors.