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Case study · Healthcare

Innerslice

A CT or MRI series is already three-dimensional: a stack of slices, each with a known position in millimetres. Innerslice reassembles that stack into a volume you can turn, cut through and measure, in the browser, on your own device.

Live since 2025Browser appMRI & CT
0files uploaded. Scans never leave your device
3section planes, with a slider for depth
Anybrowser. Nothing to install
mmmeasurements from the series' own spacing
Open Innerslice

The problem

A scan comes back as a folder of hundreds of grayscale slices in a format (DICOM) that nothing on a normal computer can open. Patients get a two-minute description at an appointment and a disc they can't read. The information is theirs, but it isn't usable.

What Innerslice does

Drop the DICOM folder (or the .zip straight from a patient portal) into the browser and it rebuilds the slices into a volume you can rotate, cut through on three planes and measure in real millimetres. The whole thing happens on your own machine: nothing is uploaded, and there is no account.

Innerslice screenshot: The open-a-scan screen
01

Open a scan, nothing else

Drop in the whole folder from a hospital CD or USB stick, or the .zip from a patient portal; no unzipping first. Pick Doctor view or Patient view. No scans to hand? There's a sample chest scan generated on the device, so you can try it without anyone's data.

Click the screenshot to view it full size.

Innerslice screenshot: 3D model of a hamstring MRI with the section plane
02

The 3D model, cut wherever you want

The volume renders with a choice of looks tuned to the scan type (CT windows in Hounsfield units, MR tissue, MR surface, bright-only) and a section plane you can slide through across, left-right or front-back. Axial, sagittal and coronal slices sit underneath and stay in sync with the cut.

Click the screenshot to view it full size.

Innerslice screenshot: Measuring a 21 cm distance along tissue with pins
03

Measure in real millimetres

Drop pins on the model to measure a distance along tissue, an angle, or read the value at a point. Measurements are taken against the series' own millimetre spacing, nothing is smoothed into shape, and every pin shows up on the 2D slices too. Add notes, step through slices at a chosen stride, and export the views.

Click the screenshot to view it full size.

Built for medical data

Nothing leaves your deviceAll reading and rendering happens in your browser. Scans are never uploaded, stored or seen by anyone else.
No account, no sign-upOpen the site, drop in the folder, done. There is nothing to create and nothing to delete afterwards.
What's nextAutomatic labelling of muscles, bones and other structures from the scan itself, so the model names what you're looking at.

Innerslice is an independent research tool. It is not a medical device and not a diagnostic one: it shows you the scan, it doesn't interpret it. The scan in these screenshots is a hamstring MRI of the authorThe scan in these screenshots is the author's own.#39;s own, shared with his permission (he is also the developer).

Have files your team can't open or explore?

Scans, CAD, logs, exports from a system nobody else can read. If the data is there, I can build the thing that makes it usable.

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