Three-dimensional magnetic resonance imaging of rigid polymeric materials using single-point ramped imaging with <i>T</i>₁ enhancement (SPRITE)

SPRITE MRI of bubbly flow in a horizontal pipe

“…7 is evident in the more pronounced void fraction distribution, as well as the higher background signal level (due to greater void and velocity fluctuation, which causes some smearing of the image, see below and [22]). A slight periodic intensity fluctuation is discernible in the images in the z-direction; this is an artefact, which we believe due to residual transverse magnetisation [23], and is the subject of further investigation. The average void fractions (neglecting T Ã 2 ) measured from I two /I single were 0.17 and 0.27 for the low and high gas flow rates respectively.…”

Water Content Profiles with a 1D Centric SPRITE Acquisition

“…If T * 2 is longer than TR, the transverse magnetization will survive several pulses. In this case, the unwanted transverse magnetization can be removed by the application of an additional gradient spoiler at the origin of k-space (10).…”

35Cl profiling using centric scan SPRITE with variable flip angle excitation

“…Single point imaging (SPI) is now widely accepted as a powerful quantitative technique for imaging objects with short spin-lattice, T 1 , and spin-spin, T 2 , relaxation times [1][2][3][4]. SPI and its later modification SPRITE (Single Point Ramped Imaging with T 1 Enhancement) [5] are pure phase encoding techniques.…”