Getting started

Librevet is a veterinary radiograph viewer and case-planning tool. Every film gets calibration, standard radiographic measurement and annotation, and orthopaedic planning adds TPLO planning, fracture repair planning and implant templating at true scale.
What does Librevet do?

- View and annotate digital radiographs
- Calibrate using a known-size reference (typically a radiopaque sphere)
- Measure distances, angles, TPA, CORA and Norberg angles
- Overlay implant templates drawn to true millimetre dimensions
- Plan straight, wedge and crescentic osteotomies, and reposition bone
- Send a case to a referring vet as a read-only link, or name a colleague who can work on it with you
- Ask a board-certified specialist for a paid remote opinion — not open yet; see Specialist opinions
- Ask a supplier (a manufacturer or a wholesaler) for its free recommendation on a case — not open yet; see Sharing and referrals
Who is it for?
Small animal vets planning an orthopaedic case on its radiographs. The app assumes clinical knowledge — it doesn’t teach you when to perform a TPLO, just helps you plan one accurately.
What do I do first?
- Start from an image. From the gallery, click New Case and drop in a radiograph, a zipped study, or a clinical video — or pull a study straight off your PACS. No images yet? Start without imaging, at the foot of the same dialog, makes the case with nothing in it and opens its record; add the films when you have them.
- Name it. DICOM files are read by the app directly — you don’t have to export a JPEG first — and JPEG, PNG and a zipped study all work too. Name the case once the first image is in, and organise into folders whenever you like.
- Calibrate. Anything that reads or draws in millimetres waits for a real-world scale: Line, Angle, Circle and TPA, every osteotomy, Reposition and the implant templates. See Calibrating radiographs.
- Measure or plan. Once calibrated, all of those unlock. Annotation, CORA and Norberg work before you calibrate.
What is on the screen?
- Left sidebar — Tools, the planning sections: Calibration, Measurement, Annotation, Osteotomy and Reposition. Implants, the template library.
- Centre canvas — the radiograph workspace. Each open view carries its own toolbar for mirroring, windowing and inverting the film; on a computer, the knob in its bottom-right corner turns it.
- Top bar — the case’s other screens (the record, the attachments and logging, and the specialist report once a case has been sent for a specialist opinion), the surgical report, sharing, the magnification loupe, the switch for the readings on the film, and undo/redo
- Bottom-left of the films — the swap panel, when a placed implant is selected: its name, swap controls, and delete. Drag it by its header, or put it in the sidebar’s Implants tab instead. On a window narrower than about 1,024 pixels it always sits at the top of the Implants tab
- Bottom-right — help, bug reports, feature requests
Key concepts
- Calibration is per-radiograph. Each image needs its own scale set, because every exposure has different magnification.
- The “active” radiograph has a cyan border. With multiple views open, tools act only on the active one — click a panel to make it active.
- Templates are drawn to true mm dimensions. A 3.5 mm plate is drawn at 3.5 mm against the scale you calibrated — so the fit you see is only as good as that calibration.
- Placed implants are anchored to the bone, not to the screen. If you later rotate the radiograph to view from a different angle, the implant rotates with it.