Fast positive contrast imaging using a spin-echo spiral sequence
Wang W, Chen W, Meyer C, Rogers W
University of Virginia
The presence of super-paramagnetic iron-oxide particles can be visualized either as a negative contrast or a positive contrast. Positive contrast imaging is reported to have improved specificity in iron detection. We developed a rapid slice-selective spin-echo spiral sequence for positive contrast imaging. We achieved positive contrast imaging in vivo by using this sequence. The developed technique is less sensitive to respiratory motion than 2DFT positive contrast imaging sequences.