Evaluation of suspected musculoskeletal neoplasms using 3D T2-weighted Spectral presaturation with inversion recovery

Musculoskeletal Tumors: How to Use Anatomic, Functional, and Metabolic MR Techniques

“…When producing fluid-sensitive images, there is a choice of whether to use a STIR or a fatsuppressed T2-weighted sequence, and although either of these pulse sequences is sufficient, STIR produces more favorable contrast between fluid and surrounding tissues (10,11). However, the introduction of the spectral presaturation with inversion recovery, or SPIR, technique with T2 weighting may prove to be optimal (12).…”

Selective 3D ultrashort TE imaging: comparison of “dual-echo” acquisition and magnetization preparation for improving short-T 2 contrast

“…Various schemes for long-T 2 component suppression [12,19], fat suppression [13], and the combination thereof exist [14,20]. This work focuses on an implementation which applies long-T 2 and fat preparation consecutively.…”

“…For fat suppression, a standard SPIR (spectral presaturation by inversion recovery [13]) sequence has been applied, as schematically shown in Fig. 1c.…”

“…This approach is called "dual-echo" approach in the following, although instead of acquiring two full echoes, an FID and a subsequent echo are collected. An alternative approach uses magnetization preparation before the UTE acquisition to suppress either long-T 2 water components [12], fat signal [13], or both [14].…”

Novel Contrast Mechanisms at High Field 1

“…Alternatively, magnetization preparation can be applied before the UTE acquisition suppressing long-T2 water components, 9 fat signal, 18 or both. 10 Figure 4 shows an example.…”