Keywords: New Trajectories & Spatial Encoding Methods, Blood vessels, FBI, Non-contrast
Motivation: The purpose of this study is to develop a fast, motion-robust fresh blood imaging (FBI) technique using a centric ky–kz k-space trajectory (cFBI) and an exponential refocusing flip angle (eFA) scheme.
Goal(s): Investigate scan time reduction and image quality of cFBI and compare it with the standard FBI technique.
Approach: Advancement of the cFBI sequences with eFA and optimized cardiac trigger delays on a 3-T MR imager, aiming to reduce the scan time and maintaining the image quality.
Results: cFBI outperforms standard FBI in scan time reduction with good image quality with less motion-related artifacts and Nyquist N/2 artifacts.
Impact: A two-fold reduction in scan time is achieved with the non-contrast FBI technique, while still maintaining image quality and reducing motion and N/2 artifacts.
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