# Interpretation teaching images — licensing

Educational hosting for Stratford Nucs (`/hida/`). Downloaded (not hotlinked) from Radiopaedia.org under CC BY-NC-SA. Always attribute the contributor and rID.

## Radiopaedia (CC BY-NC-SA 3.0/4.0, per case)

| File | Case | rID | Link | Wired to |
|------|------|-----|------|----------|
| `normal-dynamic.jpg` | Hepatobiliary scintigraphy - normal (Kevin Banks) | [169398](https://radiopaedia.org/cases/169398) | https://doi.org/10.53347/rID-169398 | `STUDY.interpretation.normal[n1]` |
| `acute-chole-dynamic.jpg` | Acute cholecystitis (hepatobiliary scan) (Kevin Banks) | [169851](https://radiopaedia.org/cases/169851) | https://doi.org/10.53347/rID-169851 | `STUDY.interpretation.abnormal[a1]` |
| `lowef-curve.png` | Gallbladder dyskinesia — GB ejection fraction curve, EF 2% (Ammar Ashraf) | [202863](https://radiopaedia.org/cases/202863) | https://doi.org/10.53347/rID-202863 | `STUDY.interpretation.abnormal[a2]` |
| `lowef-frontal.png` | Gallbladder dyskinesia — dynamic filling montage (same case, supplementary, not currently wired) | 202863 | same | — |
| `bile-leak-lateral.jpg` | Biliary leak (hepatobiliary scan SPECT-CT) — right lateral static view (Kevin Banks) | [189725](https://radiopaedia.org/cases/189725) | https://doi.org/10.53347/rID-189725 | `STUDY.interpretation.abnormal[a3]` |

Suggested credit form (per Radiopaedia): "Case courtesy of [contributor], Radiopaedia.org, rID: …" — this exact string is embedded as the `credit` field on each matching case object in `index.html` and rendered in the figure caption + linked back to the case (`link` field).

### Notes on selection

- `acute-chole-dynamic.jpg` shows the 60-minute dynamic acquisition and 4-hour delayed static image with persistent gallbladder nonvisualization (empty gallbladder fossa, dashed ovals) — consistent with acute cholecystitis. This particular case does not include a morphine-augmentation step; the morphine teaching text in the case detail is general protocol guidance, not a claim about this specific image.
- `bile-leak-lateral.jpg` is the right lateral static view from a SPECT-CT-confirmed biliary leak case; the original Radiopaedia annotations (arrows/labels) are rendered client-side on their viewer and are not baked into the downloaded pixel data, so the figure is shown unannotated with a descriptive caption instead.
- A second bile-leak case (rID [170003](https://radiopaedia.org/cases/170003), Kevin Banks) was reviewed but its only available imagery is a 128×128 dynamic cine with no larger encoding (thumbnail-only), so the higher-resolution SPECT-CT case (189725) was used instead.
- Considered but not used: [acute-cholecystitis-29](https://radiopaedia.org/cases/79895) (rID 79895) — explicitly documents post-morphine persistent nonvisualization, but the only available media are two MP4 video clips (no static jumbo/gallery image), so it isn't usable for an `<img>` figure here.

## Not yet illustrated with real images

- `n2` (normal — late but timely filling) and the three `artifacts` cases (`x1` free technetium, `x2` poor hepatic extraction, `x3` bowel/ROI pitfall) keep the synthetic SVG schematic (`hidaFigureSVG()`) — no public-domain/CC image was identified that cleanly matches these specific teaching points without misrepresenting the source case.
- Later Radiopaedia pass: rID 170003 late cine frames remain ~7 KB / unusable; rID 220720 SPECT-CT frames are not a clear leak scintigram. No new HIDA stills were added. Existing honest Radiopaedia cards (n1 169398, a1 169851 without a morphine claim, a2 202863, a3 189725) were left in place.

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