Cardiac Surgery Suite
The full eleven-workspace pipeline: segmentation, planning, preparation, sterile theatre review, printing, flow simulation and reporting, including sequential segmental analysis for congenital heart disease.
Explore the suite →Built as
specialty suites.
Trinetra is a platform of specialty suites, each pairing the same segmentation-to-report pipeline with the tools and content one surgical discipline needs. The Cardiac Surgery Suite is first to ship; more follow on the same foundation.
Thoracic Suite
Airway and lung segmentation, resection planning and reporting for thoracic surgical cases, on the same workspace pipeline.
Orthopedic Suite
Bone and joint segmentation, implant planning and print preparation for orthopedic cases.
More specialties
Additional suites are planned as the platform grows. Tell us which specialty your team needs next.
Request a demo →Cardiac Surgery Suite.
Eleven workspaces.
Trinetra's flagship suite spans the cardiac case from raw DICOM to a delivered report: segmentation, organisation, 3D review, mesh preparation, controlled review, sterile theatre presentation, immersive viewing, print preparation, experimental flow visualisation and structured reporting. The same navigation and project format keep it all coherent.
Segment
Turn a DICOM series into named anatomical meshes with threshold, region-growing and manual paint tools, exported straight into Casebook.
Casebook
Track research cases, stages, projects, files and notes in a searchable local workspace.
Studio
Inspect, measure, annotate, cut, compare and present multi-model STL cases.
Prep
Analyse mesh health, clean geometry, split islands, smooth, hollow, cut and create surface patches.
Review
Give collaborators the familiar viewer and planning tools, without editing or export access.
Theatre
Drive the reviewed case with tracked hand gestures from the sterile field — rotate, step through saved views and call up structures without touching a surface.
Quest Viewer
The free Review workspace at full scale, standing in the room with the anatomy instead of looking at it through a screen.
Check wall thickness, hollow, add supports and export a manufacture-ready STL for your printing partner.
CFD
Load OpenFOAM flow results alongside the anatomy and inspect streamlines, pressure and velocity fields in the same viewer.
Reporting
Build a structured case report, including a sequential segmental analysis workspace that assembles its schematic diagram straight from the segmented case.
Demo & Learning
Open curated congenital heart disease cases in the free Review workspace for teaching and demonstration.
From segmentation
to shared review.
A practical research pathway that works with your existing 3D Slicer workflow and keeps the authoritative case on devices you control.
Segment the case
Segment the DICOM series in Trinetra Segment, or use TrinetraPrep in 3D Slicer to organise segments, colours, transforms, markups and STL/NRRD export.
→Register the case
Add reference, diagnosis, procedure, project, stage, tags, notes and source files in Casebook.
→Inspect in Studio
Load several anatomical meshes, set colour and transparency, measure and save named views.
→Prepare the STL
Analyse the mesh before and after controlled cleaning, smoothing, hollowing, cutting or patching.
→Package for review
Save the Trinetra project, or a restricted review file for collaborators who don't need editing access.
→Present together
Pair a private room, present saved views and let clinicians point, raise hands, annotate or inspect independently.
Current feature
inventory.
Search the released capabilities below. Planned ideas are deliberately kept out of this list so the site does not promise features that are still on the roadmap.
Segment 10 features
DICOM series importLoad a multi-slice DICOM series directly into a case.
Multi-planar previewScroll axial, coronal and sagittal slices in sync.
Threshold segmentationIsolate structures by an intensity range.
Region growingGrow a label from a seed point along connected voxels.
Manual paint and eraseCorrect labels slice by slice with a brush tool.
Label organisationName, colour and reorder anatomical labels.
Smoothing on exportApply light smoothing when converting a label to mesh.
Mesh export to CasebookSend generated STL segments straight into a Casebook case.
Undo historyStep back through segmentation edits.
Local DICOM handlingStudies are read and processed on the device.
Casebook 15 features
ProjectsCreate, rename and organise research projects.
Case recordsReference, title, diagnosis, procedure, date and notes.
Research stagesNew, Segmenting, Planned, Discussed, Operated and Archived.
TagsFlexible comma-separated labels and tag filters.
SearchSearch references, titles, diagnoses, procedures, notes and tags.
SortingNewest, oldest, reference, title or stage.
Stage filtersFilter the list and show stage counts.
Local file attachmentsAdd, open, save and remove linked case files.
Duplicate caseReuse a record structure for a related case.
Single-case exportMove a selected case as a portable record.
BackupExport the local Casebook database.
RestoreRecover Casebook from a previous backup.
Local IndexedDB storageCase metadata stays within the installed environment.
Cross-module navigationOpen Studio, Prep, Review and Demo & Learning from the suite bar.
Licence-aware recoverySave work and open renewal settings when a licence expires.
Studio 40 features
Multi-STL loadingBinary and ASCII STL, drag-and-drop or file browser.
Local file processingMeshes are read on the device.
Model listManage several anatomical meshes in one scene.
Per-model colourSet an individual colour for each mesh.
TransparencyReveal internal structures with model opacity.
Visibility controlShow, hide or clear models.
TransformsMove, rotate and scale selected models.
Triangle reductionReduce a selected mesh or all meshes to a target.
Fit viewFrame the loaded anatomy in one action.
RotateOrbit the scene with pointer controls.
PanMove the camera target across the scene.
ZoomWheel and drag zoom interaction.
Six anatomical viewsAnterior, posterior, superior, inferior, left and right.
Named saved viewsStore and restore camera positions.
Z or Y upChoose the scene's up axis.
LPS or RAS conventionWork with common medical coordinate conventions.
Interior shadingShade the inside surfaces of open cuts.
WireframeInspect surface topology.
Scissor cutDraw around geometry to remove a selected region.
Undo cutReverse the latest cutting operation.
LabelsPin text to a selected surface point.
Point-to-point measurementMeasure distance between two 3D points.
Annulus sizingPlace points around a rim for sizing.
Surface pathsClick or draw points along the mesh.
Route planningSelect start and end points for a surface route.
Endoscope viewInspect the model from an internal viewpoint.
InkDraw directly over the visible surface.
PaintBrush colour onto a mesh region.
SculptGrab and move a local surface patch.
Background presetsDark, slate, white or a custom colour.
Lighting controlsAmbient and headlight intensity.
Ghost cut-awayKeep removed context visible as a transparent ghost.
Cinematic shadingEnhanced depth and surface rendering.
Torch lightingRaking light to reveal subtle surface detail.
NRRD volume slicesLoad a Slicer-exported NRRD aligned to the meshes.
PNG captureSave the current viewport for research figures.
Project open/saveKeep scene and planning data in a Trinetra project.
Restricted review archiveCreate a non-HTML case for the free Review workspace.
Experimental VR inspectionEnter an immersive view on supported devices.
Tool levels and shortcutsBasic, advanced and all-tool groupings with keyboard shortcuts.
Prep 18 features
All Studio viewing toolsInspect and document the mesh before modifying it.
Mesh health reportTriangle and welded-vertex counts.
Surface areaCalculate mesh surface area.
Closed volumeCalculate enclosed volume for a closed mesh.
Boundary-edge detectionIdentify open mesh boundaries.
Non-manifold detectionFlag edges that do not form a valid two-manifold surface.
Invalid-face detectionFind degenerate or unusable faces.
Duplicate-face detectionFind repeated triangles.
Island countCount disconnected surface components.
Clean bad facesRemove zero-area and duplicate faces.
Split islandsCreate a separate object for each disconnected component.
Taubin smoothingUse 1–20 shrink-reducing smoothing passes with fixed boundaries.
HollowingCreate an inward offset surface at a chosen thickness for closed inputs.
Plane cutsApply active cutting planes.
Scissor cutsDraw an open cutting region.
Surface-loop patchCreate a patch from an existing surface-loop workflow.
Prep undoReverse preparation operations.
STL outputExport one selected STL or all visible meshes.
Review 12 features
Familiar full viewerRetains the original 3D inspection interface.
Multi-model displayColour, opacity and visibility controls.
Camera and saved viewsUse anatomical and author-defined viewpoints.
MeasurementsDistance and annulus planning tools remain available.
AnnotationsLabels, ink, paint, paths and routes remain available.
Cut-away inspectionScissor tools and interior shading remain available.
Lighting and figuresBackground, lighting and PNG capture.
NRRD contextReview aligned volume slices when supplied.
Project open/saveOpen and retain allowed review state.
Non-HTML archiveRead validated Trinetra review packages.
No authoring exportEditing and export tools are not available in Review.
Free accessReview does not require the authoring licence gate.
Theatre 8 features
Hand-tracked navigationRotate, pan and zoom the case using tracked hand gestures, with no controller contact.
Sterile-field modeThe interface stays usable by a scrubbed-in presenter without touching any surface.
Gesture menuOpen tool and view menus with a pinch-and-hold gesture.
Saved-view walkthroughStep through a case's saved views with a gesture.
Large-format display supportPresent on an OR monitor or wall display during a live case.
Non-sterile hand-offA second, non-sterile workstation can take over full input at any time.
Session loggingRecord which views and structures were shown during the review.
Same case, same fileUses the Studio or Review project directly, with no separate authoring step.
Collaboration 16 features
Serverless WebRTC roomsDirect encrypted data channels with no paid server.
Multi-participant hostCreate one fresh invite for each additional clinician.
Display-name rosterSee who is connected and presenting.
Presenter modeBroadcast the presenter's live scene state.
Saved-view slidesMove the room through named camera views.
Follow presenterKeep a guest aligned to the live presentation.
Independent inspectionPause following without leaving the room.
Return to presenterRejoin the live scene in one action.
Send scene nowPush the current scene state immediately.
Live pointersShow participant pointers over the shared viewport.
Raise handSignal a question to the room.
Surface-pinned notesShare a note at a 3D surface coordinate.
Camera synchronisationOrbit, target and zoom.
Model-state synchronisationVisibility, colour, opacity and transforms.
Participant reconciliationKeep rosters current when people join or leave.
No geometry uploadEveryone opens the same case locally; mesh files are not sent.
Print 8 features
Wall-thickness checkHighlight regions thinner than a chosen print tolerance.
Manifold repair passRun mesh-health checks before export.
HollowingUses Prep's offset-surface hollowing for lighter, resin-efficient parts.
Support previewPreview likely support-contact points before sending to a slicer.
Multi-part packingArrange several segments for one print job.
Scale and unit lockSet physical scale explicitly and lock it against accidental changes.
Print-ready STL exportExport a manufacture-ready STL per part or as a packed set.
Print logKeep a record of which file, scale and date was sent to print.
CFD 7 features
OpenFOAM case importLoad surface and volume flow results from an OpenFOAM case.
Streamline visualisationTrace flow paths through the loaded anatomy.
Pressure and velocity fieldsColour the surface or a clip plane by a selected field.
Clip planesCut into the volume result to inspect internal flow.
Synced with anatomyFlow results are registered to the same STL used elsewhere in the case.
Legend and scale barRead field values against a labelled colour scale.
Snapshot exportSave a PNG of the current flow view.
Reporting 8 features
Structured case reportAssemble diagnosis, procedure, findings and saved views into one report.
Sequential segmental analysis workspaceWork through situs, atrial arrangement, and atrioventricular and ventriculo-arterial connections in the standard segmental sequence.
Auto-generated schematicProduce a schematic diagram of the segmental findings directly from the completed analysis.
Editable schematicAdjust the generated schematic before it is placed in the report.
Linked viewsAttach specific Studio saved views to report sections.
Report templatesStart from a template for common report types.
PDF exportExport the finished report as a PDF.
Draft autosaveWork is kept locally as the report is written.
Demo & Learning 7 cases
Curated CHD librarySeven de-identified open-source teaching cases are included.
One-click openingLaunch a teaching case directly in the restricted Review workspace.
Pathology-led browsingFind arch hypoplasia, common arterial trunk, DORV, interrupted arch, TAPVC, tetralogy and TGA cases.
Review-only protectionTeaching cases do not expose STL or source-file import.
Presentation readyUse named views, measurement, annotation and collaboration tools.
Works offlineIncluded cases remain available without a network connection.
Meta Quest 8 features
Quest installable packageRun the Trinetra suite on Meta Quest 2 for research pilots.
Immersive inspectionEnter VR from supported cases and controls.
Offline application cacheKeep core application resources on the headset.
Time-limited licencesPaid workspaces use the same managed one-device licensing model.
Free restricted ReviewOpen premade Trinetra review files without source-file import.
Co-review controlsPresent, follow, point, raise a hand and add shared notes.
Shared project conceptMove authorised Trinetra files between desktop and headset.
Local case processing3D case geometry remains on the headset during normal review.
How to use
Trinetra well.
The safest and most repeatable workflow starts with a baseline check, makes one controlled change at a time and records what was presented.
Build a clean case
- De-identify source files.
- Export named STL segments and an aligned NRRD from Slicer.
- Create the Casebook record and attach the working files.
- Open the project in Studio and confirm units, orientation and coordinate convention.
Compose the scene
- Add all relevant meshes.
- Set colours and transparency.
- Fit the view and inspect from six anatomical directions.
- Measure, label and create named views for the questions under review.
Edit with evidence
- Analyse before editing.
- Repair only what the report identifies.
- Use small smoothing increments.
- Analyse again, save the project and verify the output independently.
Share the right file
- Save the authoring project privately.
- Create the restricted review archive.
- Give the reviewer the free Review application.
- Send case files through an approved private channel.
Run a co-review room
- Everyone opens the same case locally.
- Create and exchange one private invite per guest.
- Choose Present my view.
- Move through saved views and use pointers, hands and pinned notes.
Product guidesRead the current installation, product, preparation and collaboration guides.
Presenter
Controls the shared view and saved-view sequence.
PointerRaise handNote
Reviewers
Follow, inspect independently, annotate and return.
Join the
research pilot.
Trinetra 0.1.8 is supplied directly to approved research and education teams. This keeps licences, onboarding and support connected to a named pilot.
Release 0.1.8 verifiedmacOS Apple Silicon · macOS Intel · Windows x64 · Quest source package
⌘Studio 0.1.8
macOS
Packaged builds for Apple Silicon and Intel Macs, supplied with a one-device managed research licence.
Open installation PDF⊞Studio 0.1.8
Windows
A portable 64-bit package for pilot workstations, with Casebook, Studio, Prep and Review; the learning library uses a separate licence.
Open installation PDF◌Quest 0.7.0
Meta Quest 2
A headset package for immersive review and presentation testing. Pilot installation currently uses developer-mode deployment.
Open Quest PDFInstall on the
devices you use.
Start with the desktop pilot. Quest deployment is available for approved headset testing.
⌘
macOS
- Apple Silicon and Intel packages
- Unzip and move to Applications
- Right-click Open on first launch
- Import a time-limited licence
⊞
Windows
- 64-bit Windows package
- Unzip to a trusted folder
- Run Trinetra Studio.exe
- Keep the folder together
◌
Quest 2
- Signed Research Viewer APK
- Sideload with Meta Quest Developer Hub
- Opens as a landscape standalone app
- Use performance-aware meshes
Research pilot
Turn a 3D case into a guided clinical conversation.
Use Trinetra with de-identified research cases, record structured feedback and measure whether the workflow saves preparation time or improves review consistency. The current edition is expressly for research and education.
Get in touch
Request a demo
or a quote.
Share your name, email, institution, phone number and purpose of use, and which suite you're interested in. We'll follow up with next steps for a pilot licence.