DIRECT v2.1.0 Release Notes

Direct v2.1.0 Release Notes

Anouncing the release of DIRECT v2.1.0. This update brings in a nutshell:

• CMRxRecon Challenge scripts: to reproduce team's DIRECT (second best ranking and fastest best team) results.
• New Features: SSL & JSSL MRI reconstruction training, new augmentation transforms, kt subsampling functions.
• Python 3.9 and 3.10 support.

Changes Since v2.0.0

New Features

• SSL MRI Reconstruction (SSDU)

  • direct.ssl module added containing basic SSL MRI functionality with mask splitters for creating two disjoint sets.
  • Added supervised and SSL_SSDU MRI transforms that split the mask and k-space into input and target subsets
  • Model engines for SSL training (VSharpNetSSLEngine, Unet2dSSLEngine, VSharpNetSSLEngine)

• JSSL MRI Reconstruction

  • Model engines for JSSL training (VSharpNetJSSLEngine, Unet2dJSSLEngine, VSharpNetJSSLEngine)

• Augmentation MRI Transforms

  • New transforms RescaleKspace , PadKspace and CompressCoilModule transforms.

• Non-Static and kt Sampling:

  • Introduced new kt sampling mask functions, including KtGaussian1DMaskFunc, KtRadialMaskFunc, and KtUniformMaskFunc.
  • Supported dynamic and multislice sampling modes dictated by MaskFuncMode, which can be STATIC, MULTISLICE, or DYNAMIC.

Other Additions

• CMRxRecon Challenge 2023 DIRECT participation scripts:
• JSSL Experiments YAML configuration files, data split lists (.lst files), and running instructions for the experiments detailed in arXiv:2311.15856.

Code Quality Improvements

• Now DIRECT ensures compatibility with Python 3.9 and 3.10.
• Enhanced typing information.

Acknowledgments

This release was made possible by the hard work and dedication of our team and contributors:

• Code Development & Maintenance: George Yiasemis (@georgeyiasemis).
• Code Review & Project Management: Jonas Teuwen (@jonasteuwen).

Documentation and Changelogs

Access detailed documentation for DIRECT v2.0.0 at our documentation site.

• v2.0.0 to v2.1.0 Changelog: View Changes