Free and open source
See inside a scan, right in your browser.
Your own CT, MRI or X-ray opens on this device, research models outline the parts and name them, and nothing is uploaded.
Try the sample scan Open your own scan
- 54 named parts on the sample
- 7 research models
- Runs on your device
Loading the sample scan
Sample CT from TotalSegmentator (CC BY 4.0). Outlines by an open research model.
Why back this
What your support builds on.
Three facts from this page, and who is behind them.
7
research models
Open models for X-ray, CT, MRI and mammogram pictures, each described in detail.
54
parts named on the sample scan
Open the sample and tap an outline to see its name.
1,615
runs on record
382 hours of recorded runs. The newest entry is .
- Who builds it
- LunarWerx LLC, a for-profit company. The code and the model cards are public.
- What is next
- Bigger research models, trained on rented GPU time.
Checked on pictures the models never trained on.
115
body structures outlined on CT
Checked on 89 CT scans kept out of training. Each structure is in at least 10 of them.
25,596
chest X-rays used for testing
NIH's official test list. None were used in training.
4,067
children's wrist X-rays used for testing
From the GRAZPEDWRI-DX test set. Only pictures with a clear label are counted.
Scans we cover
X-ray, CT, MRI and mammogram.
Each kind of scan opens in the viewer, and each has open research models trained on public data.
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Chest 
Wrist 
Spine X-ray
The viewer opens single pictures and whole series, with zoom and brightness.
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Organs 
Lungs CT
The viewer steps through every slice, with a brightness window and zoom. A 3D view shows the organs and bones as coloured shapes.
Research models
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Lower spine MRI
Spine MRI slices open the same way, with zoom and brightness. Discs and vertebrae can be coloured by name.
Research models
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One view Mammogram
Opens the picture for zoom and brightness, like any other X-ray style picture.
Research models
Pictures from public datasets under CC BY and similar licences. Picture credits
Research results
One result from each research model.
Research results on public test data. They say nothing about your own scan.
X-rayChest X-ray research model
0.8175 (0.8110 to 0.8231)
AUROC: Agreement with ChestX-ray14's labels, mean over its 14 label types
NIH's official test list: 25,596 pictures of 2,797 patients
Held-out testCTCT organ outliner
0.8668 (0.8538 to 0.8781)
Dice: Mean over 115 structures
Held-out test: 89 CT scans
Held-out testMRIDisc grading research model (MRI)
0.773 (0.664 to 0.853)
Kappa: Agreement with SPIDER's Pfirrmann grades, held-out test
SPIDER held-out test: 44 patients, 264 discs, opened once
Held-out testX-rayFracture research model (X-ray)
0.979 (0.974 to 0.984)
AUROC: Agreement with GRAZPEDWRI-DX's fracture labels, children's wrists
GRAZPEDWRI-DX held-out test: 4,067 pictures of 1,176 patients with a certain label
Held-out testCTLung nodule research model (CT)
88.0% (86.0 to 89.6%)
Share of LUNA16's marked nodules matched, averaged over seven false-alarm allowances
LUNA16: 888 thin-slice LIDC-IDRI scans, five folds, each read by a model that never trained on it
DevelopmentMammogramMammogram research model
0.793 (0.774 to 0.811)
AUROC: Agreement with CMMD's benign/malignant labels, per picture
CMMD: 3,744 pictures of 1,775 patients, five folds split by patient
DevelopmentX-rayLumbar spine X-ray corner reader
97.9% (97.3 to 98.4%)
Share of BUU-LSPINE's marked vertebrae matched, side view (IoU 0.5)
All 2,000 BUU-LSPINE patients, out of fold
Development- Held-out test
- data the model never saw while it was trained
- Development
- data used while the model was built
Built in the open
Every training run is written down.
Kept or dropped, each result goes in the log with the version of the code that made it.
1,615
runs recorded
382
hours of recorded runs
74
ideas tried
newest entry
Pricing
Free to use. Paid for companies.
Personal use, charities, schools, universities and public research are free under the licence.
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Free
Free viewer and licence
$0
Free, because it runs on your device and costs us nothing to run.
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Pay what you want
Supporter licence
From $3
Pay what you want once, from $3, or monthly from $5. The app stays free.
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Paid
Commercial licence
From $1,500 a year
For companies building products or internal tools, with a free 60-day evaluation.
Not for diagnosis or treatment. Not cleared by the FDA or any regulator.
Support the research
Help train bigger research models.
Your support pays for rented GPU time. Today training runs on one home graphics card; an A100 80GB costs $1.59 an hour to rent.
Investing or partnering? Talk to us
All the ways to give See pricing
LunarWerx LLC is a for-profit company. Payments are not tax-deductible.
Privacy
Your scan stays on your device.
Nothing is uploaded when you open a scan. The pictures are read by your own browser and are gone when you close the tab. If you ever choose to donate a scan to help the research, you see everything first, and what could identify you is removed in your browser.
Picture credits
- CT, organs and bones coloured. TotalSegmentator dataset v2.0.1, CC BY 4.0. Source. Windowed (width 400, level 40), cropped and coloured by LunarWerx, using the dataset's own masks.
- MRI of the lumbar spine, vertebrae and discs coloured. SPIDER lumbar spine MRI, CC BY 4.0. Source. Middle sagittal slice, contrast stretched, cropped and coloured by LunarWerx, using the dataset's own masks.
- X-ray of a child's wrist. GRAZPEDWRI-DX v2, CC BY 4.0. Source. 16-bit picture contrast stretched, cropped and resized by LunarWerx.
- Chest X-ray. NIH ChestX-ray14, No restrictions (NIH), attribution requested. Source. Contrast stretched, cropped and resized by LunarWerx.
- CT of the chest, lung window. LIDC-IDRI, CC BY 3.0. Source. Windowed (width 1500, level -600), cropped and resized by LunarWerx.
- Mammogram. CMMD (Chinese Mammography Database), CC BY 4.0. Source. Contrast stretched, cropped and resized by LunarWerx.
- Side X-ray of the lower spine. Spondylolisthesis Vertebral Landmark Dataset v1 (Reyes, VSB-TU Ostrava), CC BY 4.0. Source. Contrast stretched, cropped and resized by LunarWerx.