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An Off-Resonance Insensitive Orthogonal CSPAMM Sequence (ORI-O-CSPAMM)
Hernán Mella1,2,3, Hui Wang4,5, and Sergio Uribe2,3,6
1Department of Electrical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile, 2Biomedical Imaging Center, Pontificia Universidad Católica de Chile, Santiago, Chile, 3Millennium Nucleus for Cardiovascular Magnetic Resonance, ANID - Millennium Science Initiative Program, Santiago, Chile, 4Philips, Cincinnati, OH, United States, 5Department of Radiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States, 6Department of Radiology, Pontificia Universidad Católica de Chile, Santiago, Chile
ORI-O-CSPAMM effectively removed off-resonance effects and only two images where necessary to reconstruct CSPAMM and MICSR images
Figure 2: Water and fat phantom images obtained using complex-difference (CD) and MICSR for a trigger-delay-time of 45 ms (the delays are different between the images due to differences in the duration of the tagging prepulse). The images were acquired using (a) CSPAMM, (b) ORI-CSPAMM, (c) O-CSPAMM, and (d) ORI-O-CSPAMM sequences. Images acquired without ORI prepulse showed a shift in the tagging pattern at the water-fat interface, while in ORI versions ((b) and (d)) the shift was corrected.