Ulf Jensen-Kondering1, Olav Jansen1
Classically, fat, proteins, gadolinium, melanin and blood are considered to appear hyperintense in T1w images. Additionally, e.g. flow, calcium, manganese can appear hyperintense as well. The mechanisms leading to this appearance are different: short spin-lattice relaxation time (proteins, fat), modification of the magnet field (melanin, gadolinium), and time of flight effect (flow).