Figure 2.

Manual registration tool in MRmap (screenshot from MOLLI raw data acquired in a gel phantom as used for assessment of software accuracy and performance). Images are sorted by time (= inversion time in T1 mapping, echo time in T2/T2* mapping techniques) and can be viewed as still frame or movie. For non-static applications, images can be displaced separately by any number of pixels in x or y direction in order to correct for misregistration due to motion. A grid structure with XOR logic is superimposed onto the source images to facilitate visual registration. In order to save computation time, mapping can be confined to a sub-section of the field-of-view, which can be defined within this window or via mouse-clicking.