De hecho ambos son apellidos (Look y Locker)

A spectroscopic one-shot method was originally proposed by Look and Locker in 1968 and analysed more fully in 1970 (Look & Locker, 1970). It was co-opted by Kaptein et al in 1976 to quickly sample the recovery after a preparation pulse, during the recovery period or transient phase (Kaptein, Dijkstra & Tarr, 1976). This method was developed into the TOMROP imaging sequence (T One by Multiple Readout Pulses) (Graumann, BarfuS, Fischer, Hentschel et al., 1987). In TOMROP the multiple samples of a particular recovery after RF preparation each correspond to a separate image. To acquire a complete data set for each image, the whole sequence must be repeated numerous times. Each repetition fills the next line of k-space for each image, and so on. Each image has a unique delay time. Early Look-Locker (LL) based T1 techniques required the return to equilibrium of the spin system before the next application of an RF preparation pulse. Consequently, the acquisition time per slice of such implementations was long. Hinson and Sobol used a LL method with no preparation pulse (Hinson & Sobol, 1988) but the method suffered from poor accuracy, attributed to the slice profile.