 SSFP is beneficial as a localizer sequence, such as for initial images of the anal canal in order to align the planes of subsequent T2-weighted images to be cross-sections and longitudinal sections of the canal.A particular SSFP used for this purpose is one termed "TRUE FISP" by Siemens, "FIESTA" by GE, and "balanced FFE" by Philips.SSFP protocols have different names among different MRI manufacturers.