Meeting Banner
Abstract #2407

Spectral-Spatial Selectivity Using Spatiotemporal Encoding

Jean-Nicolas Dumez1, Rita Schmidt1, Lucio Frydman1

1Department of Chemical Physics, Weizmann Institute of Science, Rehovot, Israel

A mechanism based on spatiotemporal encoding is exploited to add spectral selectivity to a pair of slice-selective frequency-swept pulses. The SPEN-based SPSP selectivity is used for fat suppression in spin-echo imaging. It does not require fast oscillating gradients and provides high-quality slice profiles. It can also be used to acquire images for two chemical species simultaneously. These concepts are illustrated with phantom experiments at 7T. Examples of fat suppression and water/fat imaging are also shown for breast imaging of human volunteers at 3T.

Keywords

achieved acknowledgments acquisition actual adapted adding addition additional addresses amplitude assay assistance award axial bandwidth blips breast bring cancellation chemical chirp chosen clinical coherently coil compatible component conjunction consisting contributions coronal corresponds curie currently dependent detrimental dimension displaced displacement distinct done duration earlier echoes encoding ensure ensures entirely even excitation excited experiment experimentally exploited fast field form foundation frequency full generation gradient gradients grant human identical illustrated imparts improved individually innovative institute investigation known lead length linear linearly lobe manipulation matrix mechanism millipede modified modulation modulations note opposite oscillating outside pair phantom physics played principle project proven pulse pulses pure quadratic rather readout refocusing regarded relies remain remove removed require respectively schemes science selection selective selectivity separate shorter sign simple simultaneous slice spatial species spectral spectroscopy spin subsequent suitable support suppressed suppression sweep swept synchrony system technician thank thereby throughout trio tubes underlying unwinding useful variety vertical volunteers water waveform yields