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Abstract #2832

Noise mitigation of high-resolution 7T MRI images

Tales Santini1, Fabrício Brito2, Sossena Wood1, Tiago Martins1, Joseph Mettenburg1, Howard Aizenstein1, Marcelo Vieira2, and Tamer S. Ibrahim1

1University of Pittsburgh, Pittsburgh, PA, United States, 2University of Sao Paulo, Sao Carlos, Brazil

High-resolution images typically present lower signal-to-noise ratio (SNR) due to the reduced voxel size. In this work, the BM4D filter was applied to high-resolution MPRAGE images acquired at 7T MRI. Original and denoised images were compared using two different acquisition resolutions: 0.7mm isotropic and 0.54mm isotropic. The method shows good results for higher-resolution images, greatly improving the SNR while keeping the useful clinical information and the small details which are not discerned using the lower-resolution acquisitions.

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