QSM-CI method: xQSM (v1)

xQSM — an octave-convolutional, noise-regularized U-Net for QSM dipole inversion. Consumes the local (tissue) field in ppm and produces susceptibility (ppm) using the pretrained in-vivo checkpoint. The octave convolution adds an X-shaped multi-resolution feature exchange on a U-net backbone with a noise-adding regularization layer. Runs CPU-only with PyTorch (no GPU); the network auto zero-pads each dimension to a multiple of 8, so there is no fixed matrix size. QSM-CI reconstruction method xqsm. Browse and run it at https://qsmxt.github.io/QSM-CI/submission.html?method=xqsm.

Keywords

quantitative susceptibility mapping, reconstruction, QSM-CI, QSM, MRI

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