CellXapps · Pathology
DiHiPa is an institutional platform for digital histology and pathology. A professor drives a whole-slide image and the room follows — a seminar of twelve or a lecture stream of several hundred — annotating the same tissue, graded on where they clicked, with the case carrying straight through to a tumour board afterwards. One system, your server, no per-seat licence.
Self-hosted · scales horizontally · OIDC + LTI 1.3 · six interface languages
The landscape
Departments usually end up paying for two systems and improvising the part that matters — the teaching. Here is where the market sits, and where DiHiPa deliberately does not.
Scanner-vendor image management & diagnostic viewers
Slide-sharing portals with education tiers
Desktop and web image-analysis software
DiHiPa instead
Everything below exists because a department asked for it and no single tool provided it. This is the list to take into a comparison meeting.
The categories above describe common product architectures in this market, not any specific vendor. Capabilities vary and evolve — evaluate any shortlist against current vendor documentation.
Four jobs, one platform
Most digital-pathology tools do one of these and force you to bolt on the rest. DiHiPa treats the teaching session, the exam, the diagnostic case and the administration as one continuous workflow over the same slides.
Synchronised viewport, laser pointer, waypoint tours, breakout rooms, voice and recording.
Click-region questions scored by overlap with the correct region — not multiple choice about a picture.
Multi-slide bundles, synoptic reports, sign-out with amendments, append-only MDT decision log.
Hash-chained audit trail, per-slide tile authorisation, two-person deletion, SSO and LTI.
Live teaching
A microscope session used to mean one person at the eyepiece describing what everyone else couldn't see. DiHiPa broadcasts the professor's viewport — pan, zoom, pointer, annotations — to every connected student in real time, and gives the professor the controls to hand that focus back.
Presence & follow
The participant rail shows who is in the room and what role they hold. Students can follow the professor with one click; in collaboration mode they can follow each other, and in teaching mode a peer becomes followable once the professor grants them the microphone.
Guided navigation
Save the fields that matter — low-power orientation, the lesional focus at 40×, the benign comparison — as named waypoints. Jump to one yourself, or broadcast it so the whole room lands on the same coordinates and magnification simultaneously.
Annotation & measurement
Every annotation is a typed object with an author, a category and real image coordinates — so the same mark that explains a feature in a lecture can be counted in a study or exported for analysis.
Pins, rectangles, ellipses, polygons, freehand, arrows, text labels and a calibrated ruler. On top of that: counting tools and IHC scoring workflows built around the numbers that go into a report.
Brightness, contrast and gamma with a live histogram and clipping warnings — plus colour deconvolution that separates haematoxylin from eosin or DAB, so a faint nuclear signal can be read without re-scanning the slide.
Assessment
A multiple-choice question about a photograph tests recall. A click-region question tests whether a student can actually find the mitotic figure — and DiHiPa scores it by geometric overlap with the region the professor drew, on the real slide, at whatever magnification they chose.
Diagnostic case review
A case is a bundle of slides with a patient reference, a diagnosis, a worklist position and a history. Collaborators can be invited into a single case without gaining access to anything else, which is what makes cross-institution second opinions practical.
Status, priority, due dates and assignment — filterable to "my queue", overdue only, or the teaching set. The same case can sit in a diagnostic queue and a course reading list at once without being duplicated.
Platform & imaging
Order-driven workflows and PACS retrieval, so DiHiPa fits an existing laboratory information system instead of asking it to move.
Everything a hospital IT review asks about, wired in before the question is asked: a tamper-evident audit trail, metrics, alerting, and documented backup and restore.
Scale & architecture
DiHiPa is designed for institutional load: several lectures running in parallel, each with hundreds of students following the same slide, while diagnostic case rooms are in session alongside them — thousands of concurrent users on one deployment, bounded by the hardware you give it rather than by a licence tier.
Concurrency is a function of the hardware behind it. We size the deployment with you during the pilot — from a single modest VM for one course to a multi-node install for a whole faculty — and load-test it against your own cohort numbers before term starts.
Pilot programme
A pilot runs on a server we provision for you, with your own slides and your own cohort. No per-seat licence, no data leaving the instance, and a direct line to the person who wrote it.
Course size, subspecialty, scanner make, and whether case review matters as much as teaching.
Your subdomain, your roles, your roster imported. Bring de-identified teaching slides.
One lecture with real students is worth more feedback than any number of demos.
A live instance is already running at dihipa.cellxapps.com — ask for an account and look around before you commit a cohort.