Practice radiology reporting with local Departmental DICOM cases.
Muninn is a desktop application suite for radiology training departments to create structured exam practice environments using their own DICOM case libraries.
- FRCR 2B exam preparation requires practicing with real cases
- Commercial question banks don't reflect your department's case mix
- Sharing cases via email/USB is disorganized and hard to track
- No way to run mock exams with proper timing and conditions
Muninn provides:
- Centralized case library on your department network
- Structured practice with findings, diagnosis, and management fields
- Mock exam mode with timing, shuffled cases, and result tracking
- Progress analytics for trainees and training programme directors
- Offline-first - works on air-gapped NHS networks
| Feature | Description |
|---|---|
| DICOM Viewer | Full windowing, presets, scroll, split-pane comparison |
| Practice Mode | Submit findings, diagnosis, differential, management |
| AI Feedback | Optional AI-powered feedback (Cerebras, Google, OpenAI, Anthropic, Ollama) |
| Self-Assessment | Rate your confidence, track improvement over time |
| Exam Mode | Timed assessments, hidden answers, shuffled case order |
| Progress Tracking | See your practice history across all sessions |
| Playlist Learning | Work through curated case collections |
| Feature | Description |
|---|---|
| DICOM Organizer | Sort PACS exports into structured case folders |
| Case Editor | Add model answers, key findings, study notes |
| Playlist Builder | Create curated collections for different training levels |
| Exam Builder | Set up mock exams with time limits, eligibility, and marking scheme |
| Marking Interface | Grade submissions with three scoring modes: legacy (0–10), dimension, or RCR CR2B (0–5) |
| Dimension Analytics | Per-exam breakdown of detection, description, diagnosis, and management scores |
| Trainee Management | Registry, PIN authentication, progress reports |
| Audit Logging | Track exam starts, submissions, and marking |
| Automated Backups | Daily and weekly backups of tracking database |
┌──────────────────┐ ┌──────────────────┐
│ MUNINN ADMIN │ │ MUNINN │
│ (Admin Tool) │ │ (Trainee Tool) │
├──────────────────┤ ├──────────────────┤
│ │ │ │
│ Import DICOM │ │ |
│ │ | |
│ │ | |
│ Create Cases │ | Browse Cases │
│ │ | |
│ Build Playlists │────▶│ Practice Mode │
│ │ │ ↓ │
│ │ │ Track Progress │
│ │ │ ↓ │
│ Create Exams │────▶│ Take Exams │
│ ↓ │ │ ↓ │
│ Mark Exams │◀────│ Submit Results │
│ │ │ │
└────────┬─────────┘ └────────┬─────────┘
│ │
└────────────┬───────────┘
↓
┌────────────────────────┐
│ Shared Network │
│ Department Folder │
│ │
│ • Case Library │
│ • Tracking Database │
│ • Trainee Registry │
│ • Exam Configs │
└────────────────────────┘
Download the latest version from the Releases page.
| Platform | Muninn (Trainee) | Muninn Admin |
|---|---|---|
| Windows | .msi installer |
.msi installer |
| macOS (Apple Silicon) | .dmg (aarch64) |
.dmg (aarch64) |
| macOS (Intel) | .dmg (x64) |
.dmg (x64) |
After mounting the DMG and dragging to Applications, you may need to run:
xattr -cr /Applications/Muninn.appThis removes the quarantine flag for unsigned apps.
Muninn requires a per-department license. Licenses are:
- Offline-verified - no internet required after activation
- Annual subscription - with 30-day grace period for renewal
- Unlimited trainees - per department, not per seat
Request a license: Contact the developer
- Windows 10/11 or macOS 12+
- Anonymized DICOM files (standard NHS PACS export)
- Network share for multi-user deployment (optional)
- AI API key for feedback feature (optional)
- Department Setup
- User Guide (Muninn)
- Admin Guide (Muninn Admin)
- Exam Mode Guide
- Case Creation Guide
- Technical Reference
Create timed exam sessions with 6 short cases and 3 long cases. Trainees see shuffled case order, hidden diagnoses, and submit structured reports. Educators mark centrally with written feedback.
Build a searchable library of interesting cases from your PACS. Consultants contribute cases, registrars practice with structured feedback, and TPDs track engagement.
Curate playlists of "must-know" emergency cases for junior trainees. Track who has completed each playlist before they go on call.
Create playlists around upcoming MDT cases for pre-meeting preparation.
Q: Can trainees cheat in exam mode? A: Exam mode hides model answers, shuffles case order per trainee, and supports PIN authentication. All submissions are logged with timestamps. Optional time limits auto-submit the exam when time expires, recording any unanswered cases as not submitted.
Q: Does it work on hospital networks? A: Yes. Muninn is offline-first with no cloud dependencies. All data stays on your local network.
Q: What DICOM formats are supported? A: Standard DICOM files from any modality. Multi-frame, CT, MRI, CR, DX all supported.
Q: Can I use my own AI provider? A: Yes. Supports Cerebras, Google AI, OpenAI, Anthropic, and local Ollama models.
Q: How is data backed up? A: Automated daily and weekly backups of the tracking database, plus manual backup/restore.
Created by Dr Christopher Murphy, Radiology Registrar, St George's Hospital NHS Foundation Trust.
Built with Tauri, Svelte, and Cornerstone.js.
- License inquiries: Contact the developer
- Bug reports: GitHub Issues
- Feature requests: GitHub Discussions
Important: Muninn is a training tool for educational purposes only. It is not intended for clinical diagnosis, does not provide formal accreditation, and does not replace supervised radiology training. See the Medical Disclaimer for full details.
FRCR 2B, radiology training, DICOM viewer, radiology exam preparation, medical imaging education, UK radiology, NHS radiology training, mock radiology exam, radiology case library, radiology reporting practice