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Abstract #3817

Towards Automated Scanning: A Framework for Maintaining Constant SNR and T1-contrast for SPGR and MP-RAGE

Dahan Kim1, Dinghui Wang1, and James G Pipe1
1Department of Radiology, Mayo Clinic, Rochester, MN, United States

We present a framework for maintaining constant SNR and T1 contrast in SPGR and MP-RAGE scans that employ non-identical scan parameters. Central to this work are the concept of time constant TA and simplified SNR expression. By adjusting the flip angle to keep TA constant and adjusting the number of spiral arms to match SNR, we demonstrated constant SNR and T1 contrast under varied ADC time, TR, and FOV. This work ultimately aims for reducing image variability, automating scanning, reducing technologist intervention, and increasing patient safety.

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