Abstract
Here the history of MRI data acquisition was introduced. The development history of MRI data acquisition system is a speed-up of acquisition time while keeping SNR per unit time; and in addition, the diversification of imaging parameters. Pulse sequence, which is a software program for controlling MRI hardware system including magnet, gradient magnetic field, RF transmission and receiver, has a great degree of freedom, and have been progressing under the limitation such as the relaxation time of T1 or T2 in human tissues. The Fourier transform (FT) is a basic technique for MR imaging, where the raw data is acquired in the spatial frequency domain named “k-space ”. The problem for MR data acquisition is to fill the k-space as fast and high SNR as possible. Quantification and standardization have recently been an important key in MRI.
