Abstract #0774

Improved Short-T2* Estimation with Bloch Equation-Modeled Concurrent Excitation and Relaxation

Ethan M Johnson¹, Kim Butts Pauly², and John M Pauly¹

¹Electrical Engineering, Stanford University, Stanford, CA, United States, ²Radiology, Stanford University, Stanford, CA, United States

Short-T2* magnetization (order of [0.1,1ms]) can relax appreciably during standard-rate excitation pulses, which can bias estimates of relaxation rates formed by fitting to observed signal decay. The effect can, however, be included in an updated model to improve T2* estimation for fast-relaxing signals. Here, a demonstration is presented.

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