Estimating Neural Orientation Distribution Fields on High Resolution Diffusion MRI Scans

Mohammed Munzer Dwedari, William Consagra, Philip Müller, Özgün Turgut, Daniel Rueckert +1 more
9/14/2024
eess.IVcs.CV

Official code: MunzerDw/NODF-HashEnc (9 stars, last commit 2024-09-29).

Abstract

The Orientation Distribution Function (ODF) characterizes key brain microstructural properties and plays an important role in understanding brain structural connectivity. Recent works introduced Implicit Neural Representation (INR) based approaches to form a spatially aware continuous estimate of the ODF field and demonstrated promising results in key tasks of interest when compared to conventional discrete approaches. However, traditional INR methods face difficulties when scaling to large-scale images, such as modern ultra-high-resolution MRI scans, posing challenges in learning fine structures as well as inefficiencies in training and inference speed. In this work, we propose HashEnc, a grid-hash-encoding-based estimation of the ODF field and demonstrate its effectiveness in retaining structural and textural features. We show that HashEnc achieves a 10% enhancement in image quality while requiring 3x less computational resources than current methods. Our code can be found at https://github.com/MunzerDw/NODF-HashEnc.

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Code Implementations(1)

MunzerDw/NODF-HashEncOfficial100%

Implementation of the paper "Neural Orientation Distribution Fields for Estimation and Uncertainty Quantification in Diffusion MRI" with the additional HashEnc method.

92Shell, PythonApr 10, 20242 years ago

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Cite this paper

@article{dwedari2024estimating,
  title  = {Estimating Neural Orientation Distribution Fields on High Resolution Diffusion MRI Scans},
  author = {Mohammed Munzer Dwedari and William Consagra and Philip Müller and Özgün Turgut and Daniel Rueckert and Yogesh Rathi},
  year   = {2024},
  eprint = {2409.09387},
  archivePrefix = {arXiv},
  url    = {http://arxiv.org/abs/2409.09387v1}
}

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