Published August 1, 2026 | Version 3
Software Open

QSM-CI method: xQSM (v3)

Authors/Creators

Description

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.

Files

xqsm.zip

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Additional details

Related works

Cites
10.1002/nbm.4461 (DOI)
Is documented by
https://qsmxt.github.io/QSM-CI/submission.html?method=xqsm (URL)
Is supplement to
https://github.com/sunhongfu/xQSM (URL)