Welcome to erwin’s documentation!

erwin is a Python-based toolbox dedicated to the computation of quantitative maps from MRI data. Accessible through either its Python API or its command-line interface, erwin provides a unified interface to well-known methods and toolboxes.

• Field mapping: relative B0 and relative B1

• Cerebral blood flow: ASL-based models (pulsed ASL, pseudo-continuous ASL)

• Diffusion: DTI and spherical harmonics, NODDI

• Motion correction

• Magnetization transfer: MTR and single-point qMT

• Magnetic susceptibility: QSM and R2*

• T1 and T2 mapping: VFA, bSSFP, pSSFP

Since quantitative MRI requires accessing acquisition parameters, often stored in vendor-specific meta-data, erwin includes tools to access meta-data in a vendor-neutral way. Using doit and Spire, erwin allows the definition of complex pipelines with automatic dependency handling.

erwin is free software, released under the MIT license, and its source code is available on GitHub.

Contents:

• Installation
• Usage
  • Command-line
  • Python program
• qMRI methods
  • B₀ mapping
  • B₁ mapping
  • Cerebral blood flow
  • Diffusion
  • Meta-data
  • Uncategorized methods
  • Motion correction
  • Magnetization transfer
  • Magnetic susceptibility
  • Segmentation
  • T₁ mapping
  • T₂ mapping

Indices and tables

• Index