Keywords: Image acquisition: Quantification, Contrast mechanisms: Relaxometry, Neuro: Brain
This technical talk will focus on how mixed contrast “weighted” images can be combined with signal models to extract physical quantities that describe the relaxation behaviour of tissue – namely T1, T2 and T2*. A number of approaches will be discussed including inversion recovery, MR fingerprinting and multi-parameter mapping. Important practicalities that need to be considered to maximise the precision and accuracy of these measurements will be highlighted, including accounting for inhomogeneity in the transmit and main magnetic fields, as well as the validity of underlying model assumptions.