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+# Technical Reports
+
+Verification studies, characterization measurements, and accuracy analyses for
+the Open-LIFU platform.
+
+Each report in this folder documents a measurement made against the code in this
+repository. Reports are versioned alongside the software they validate, so a
+reader can trace a stated accuracy figure to the specific implementation it was
+measured on.
+
+Reports are archived on Zenodo with a DOI and are citable in publications, IRB
+submissions, and grant applications.
+
+---
+
+## Index
+
+| Report                                                                                       | Date    | Authors                              | Validates                                                                                   | DOI                                                                |
+| -------------------------------------------------------------------------------------------- | ------- | ------------------------------------ | ------------------------------------------------------------------------------------------- | ------------------------------------------------------------------ |
+| [Open-LIFU Transducer Localization Accuracy Study](./2026-transducer-localization-accuracy/) | 2026-08 | Tahir, Hollender, Paribello, Konecky | Photogrammetry → MRI → transducer co-registration path in the Open-LIFU desktop application | [`10.5281/zenodo.XXXXXXX`](https://doi.org/10.5281/zenodo.XXXXXXX) |
+
+---
+
+## What belongs here
+
+- Verification and characterization studies with reported measurements
+- Accuracy, precision, and repeatability analyses
+- Benchmark comparisons between methods, algorithms, or configurations
+- Device characterization useful to external research teams (duty cycle, thermal
+  behavior, calibration)
+
+## What does not belong here
+
+- API and usage documentation — see
+  [docs.openwater.health](https://docs.openwater.health)
+- Controlled quality records — these live in the QMS and are not published from
+  this repository
+- Clinical study results — these are published through peer review, not this
+  folder
+- Marketing or announcement copy
+
+A report published here may be **derived from** a controlled record, but the
+controlled record itself is never the file in this folder. Confirm status with
+the Quality lead before adding a report that traces to a design-control
+document.
+
+---
+
+## Structure for a new report
+
+```
+technical-reports/
+└── YYYY-short-descriptive-slug/
+    ├── index.md          # Narrative version; source for the docs site
+    ├── report.pdf        # Formatted PDF of record; carries the DOI
+    └── figures/          # Figure source files
+```
+
+Both `index.md` and `report.pdf` must report identical numbers. The markdown is
+the authoring source; the PDF is generated from it.
+
+## Adding a report
+
+1. Draft `index.md` and have it reviewed by the technical owner of the code
+   being validated.
+2. Reserve a DOI on Zenodo (Resource type: **Publication / Report**) and place
+   it in the PDF footer and at the top of `index.md`.
+3. Open a pull request adding the report folder and a row in the index table
+   above.
+4. After merge, publish the Zenodo record with the final PDF and add this
+   repository folder as a related identifier.
+5. Add the page to `mkdocs.yml` navigation, so it renders on the documentation
+   site.
+
+Full sequence, including how reports are surfaced on openwater.health and the
+community hub, is documented in the contribution guide.
+
+## Corrections
+
+Open an issue against this repository if a reported figure appears inconsistent
+or a result does not reproduce. Substantive corrections are published as a new
+Zenodo version rather than a silent edit, so that anything already cited remains
+resolvable.
+
+---
+
+## Licensing
+
+Documents in this folder — including markdown, PDFs, and figures — are licensed
+under [**CC BY 4.0**](./LICENSE).
+
+This is **separate from the software license governing the rest of this
+repository.** Source code in `openlifu-python` is licensed under AGPL-3.0. The
+document license applies only to the contents of `technical-reports/` and does
+not extend to any code referenced or reproduced within a report.
+
+You may share and adapt these documents for any purpose, including commercially,
+with appropriate credit.
+
+---
+
+## Regulatory notice
+
+_The platform discussed in these reports is exclusively intended for research
+purposes and is not cleared or approved by the FDA for clinical use. It is
+solely available to researchers and research institutions who are able to
+customize it to address the specific disease state they wish to study. The
+safety and effectiveness of the platform have not been established through the
+FDA's formal review process._
+
+Measurements reported here are engineering characterizations. They are not
+claims of clinical performance, diagnostic accuracy, or fitness for any clinical
+application.
+
+---
+
+**Maintained by:** Openwater ·
+[community@openwater.health](mailto:community@openwater.health)