Overview

This repository contains two pulse sequence developments using LIBRE water-excitation combined with 3D radial phyllotaxis k-space trajectories, implemented using MATLAB Pulseq.

$T_{1}$ LIBRE 3D Radial Sequence

• Folder: /dev/t1libre_3d_radial
• Description: T₁-weighted LIBRE water-excitation with 3D radial phyllotaxis trajectory.
• Run with:

run('dev/t1libre_3d_radial/run.m')

$T_{2}$* LIBRE 3D Radial Sequence

• File: /dev/t2prep_0716.m (under progress)
• Description: $T_{2}$*-weighted LIBRE water-excitation with 3D radial phyllotaxis trajectory.

Archive of Previous Development

Earlier versions and experimental scripts are available in the archive/ folder: /archive/. You can browse this directory for older implementations and research iterations.

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Usage Instructions

1. Setup MATLAB Path
   • Ensure you cloned pulseq, and add the package into your path.
2. Inspect or Modify Parameters /dev/t1libre_3d_radial/configs/libre_default.json Each sequence script includes configurable parameters such as:
   • RF pulse design (flip angle, sub-pulse duration, phase)
   • FOV, resolution, sampling trajectory
   • Timing (TE, TR) and spoiling controls, etc Feel free to adjust them as needed.