Abstract #3539

Realistic Simulation of MRI Metal Artifact and Field Strength Dependence

Kübra Keskin¹, Brian Hargreaves^2,3,4, and Krishna S. Nayak^1,5

¹Electrical and Computer Engineering, University of Southern California, Los Angeles, CA, United States, ²Radiology, Stanford University, Stanford, CA, United States, ³Electrical Engineering, Stanford University, Stanford, CA, United States, ⁴Bioengineering, Stanford University, Stanford, CA, United States, ⁵Biomedical Engineering, University of Southern California, Los Angeles, CA, United States

MRI near metallic implants suffers from severe artifacts due to magnetic susceptibility, and these artifacts scale with the B₀ field strength. Techniques like “view angle tilting” and “multi spectral imaging” partially mitigate these distortions and are widely used at 1.5T and 3T. Here, we provide a pipeline for realistic simulation of MRI metal artifacts and noise using anatomic digital phantoms and susceptibility calculations. For one example application, total hip arthroplasty, we demonstrate the impact of field strength (0.2T, 0.55T, 1.5T, 3T), and MSI parameters such as receiver bandwidth, RF bandwidth, and number of spectral bins.

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