SeqEyes Online — Pulseq MRI Sequence Viewer

Visualize Pulseq MRI sequences — in your browser, MATLAB, or VS Code. Inspect RF pulses, gradients, ADC readouts, and triggers with interactive zoom & pan. Includes a GPU‑accelerated 3D k‑space viewer with camera presets. Inspired by SeqEyes.

🌐 Try it Online — No Install Required

🌐 Web Version — Try It Now!

→ bughht.github.io/seqeyes_plugin

No download, no extension, no setup. Just drag & drop a .seq file and explore:

• Drag & drop a .seq file onto the page (or click 📂 Open)
• All the same features as the VS Code extension — 7 channels, k‑space viewer, 6 themes, tooltips
• GPU‑accelerated 3D k‑space rendered in your browser via WebGL
• Zero‑dependency parsing — the Pulseq engine runs entirely in the browser
• Works offline — no server calls, your data stays local

VS Code Extension

Deep integration with VS Code — .seq files open automatically in the custom editor.

Install

From the Marketplace:

code --install-extension SeqEyesDeveloper.seqeyes-web

Or build from source:

git clone https://github.com/bughht/seqeyes_plugin.git
cd seqeyes_plugin
npm install
npm run package
code --install-extension seqeyes-web-*.vsix --force

Or press F5 to launch Extension Development Host.

🧪 MATLAB Toolbox

Open .seq files directly inside MATLAB — double‑click in the Current Folder browser or call seqeyes().

Install

Download from GitHub Releases and double‑click the .mltbx, or run:

matlab.addons.toolbox.installToolbox('seqeyes-0.1.7.mltbx')

Usage

seqeyes('spiral_inout.seq')   % open a sequence
open('spiral_inout.seq')      % or double‑click in Current Folder

All the same features as the browser & VS Code versions — 7 channels, k‑space viewer, themes, tooltips — rendered inside a native MATLAB figure. Requires R2022a+.

Features

• Custom editor for .seq files — opens automatically on double‑click
• 📂 Open button — switch between sequences without closing the editor
• 7 toggle‑able channels: RF · φ · Gx · Gy · Gz · ADC · Trigger
• ADC phase curve on φ axis — continuous $\phi(t) = \phi_0 + 2\pi \cdot f_{offset} \cdot (t - t_0)$
• K‑space viewer: WebGL‑accelerated 3D scatter (millions of points @ 60 fps) with camera presets
• Camera presets (xy / xz / yz) rotate the 3D view; any drag reverts to free 3D
• Interactive Canvas: cursor‑anchored time zoom, per‑row y‑axis zoom, drag‑pan, hover tooltips
• 6 built‑in themes: One Light · One Dark · Dracula · Nord · GitHub Light · GitHub Dark (+ system auto)
• Vertical cursor with live time readout
• Unit switchers for time (s / ms / µs) and gradient (Hz/m / mT/m / G/cm)
• K‑space unit toggle (1/m ↔ rad/m) with auto‑updating axis ticks
• Block boundary lines — toggle in toolbar
• Optimized for large files — binary k‑space encoding, memory‑safe parser
• Pulseq v1.2.0 – v1.5.1 support

Usage

License

MIT © Bughht