The PARMANav sequence demonstrated accuracy in a phantom study and precision in healthy volunteers, allowing for precise and accurate renal joint T1-T2 mapping.
The PARMANav sequence allows for precise and accurate free-breathing joint T1-T2 mapping of the kidneys at 3T.
OBJECTIVE: To develop and evaluate a free-breathing 2D radial joint T₁-T₂ mapping technique for the kidneys at 3T, and to assess the impact of navigator gating parameters on mapping accuracy in a phantom and precision in healthy volunteers. METHODS: The PARMANav sequence (PArametric Radial MApping with Navigator gating) was implemented with 25 single-shot radial gradient-echo acquisitions with five magnetization preparations and lung-liver navigator gating to avoid through-plane motion. Images were reconstructed using region-optimized virtual coils and compressed sensing, followed by model-based registration. An acquisition-specific joint T₁-T₂ dictionary was generated using extended phase-graph simulations. T RESULTS: In the phantom, PARMANav T CONCLUSION: With accuracy confirmed in the phantom study and precision demonstrated in volunteers, PARMANav allows for precise and accurate renal joint T
Calarnou et al. (Thu,) conducted a other in Healthy volunteers (kidney imaging). PARMANav sequence (PArametric Radial MApping with Navigator gating) was evaluated on Mapping accuracy in a phantom and precision in healthy volunteers. The PARMANav sequence demonstrated accuracy in a phantom study and precision in healthy volunteers, allowing for precise and accurate renal joint T1-T2 mapping.
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