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GESFIDE-PROPELLER approach for simultaneous R2 and R2* measurements in the abdomen
Ning Jin1, Yang Guo, Zhuoli Zhang
1Department of Biomedical Engineering, Northwestern University Chicago, IL, USA; Department of Radiology, Northwestern University Chicago, IL, USA; Siemens Medical Solutions USA, Inc., Chicago, IL, USA.
Purpose:
To investigate the feasibility of combining GESFIDE with PROPELLER sampling approaches for simultaneous abdominal R2 and R2* mapping.
Materials And Methods:
R2 and R2* measurements were performed in 9 healthy volunteers and phantoms using the GESFIDE-PROPELLER and the conventional Cartesian-sampling GESFIDE approaches.
Results:
Images acquired with the GESFIDE-PROPELLER sequence effectively mitigated the respiratory motion artifacts, which were clearly evident in the images acquired using the conventional GESFIDE approach. There was no significant difference between GESFIDE-PROPELLER and reference MGRE R2* measurements (p=0.162) whereas the Cartesian-sampling based GESFIDE methods significantly overestimated R2* values compared to MGRE measurements (p<0.001).
Conclusion:
The GESFIDE-PROPELLER sequence provided high quality images and accurate abdominal R2 and R2* maps while avoiding the motion artifacts common to the conventional Cartesian-sampling GESFIDE approaches.
