Open source, for education and research
Open your own scans in your browser.
CT, MRI and X-ray pictures from your own disc or ZIP, shown on your device, next to seven open research models for X-ray, CT, MRI and mammogram pictures. Nothing is uploaded.
Open a scan Try the sample scan
- Free for personal use
- Works offline
- No account







Pictures from public datasets under CC BY and similar licences. Picture credits
What was built, in numbers
7
research models
Seven models trained on public data, each described on its own card
Where this comes from4
kinds of scan
X-ray, CT, MRI and mammogram
Where this comes from115
body structures outlined on CT, scored on held-out scans
Structures found in at least 10 of the 89 held-out CT scans
Where this comes from25,596
chest X-rays in the held-out test
NIH's official test list, kept out of all training
Where this comes from4,067
children's wrist X-rays in the held-out test
GRAZPEDWRI-DX held-out test pictures with a certain label
Where this comes from
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 series, with zoom and brightness.
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Organs 
Lungs CT
Scroll through the slices, change the brightness window and zoom. The 3D sample shows the organs and bones as coloured shapes.
Research models
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Lower spine MRI
Scroll through the slices of a spine MRI, 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
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 test
CTCT organ outliner
0.8668 (0.8538 to 0.8781)
Dice: Mean over 115 structures
Held-out test: 89 CT scans
Held-out test
MRIDisc 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 test
X-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 test
CTLung 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
Development
MammogramMammogram 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
Development
X-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
Install it as an app
- Opens offline
- No account
- Computer or phone
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: an A100 80GB is $1.59 an hour, so $15 is about 9 hours. Today training runs on one home graphics card.
Support the research See pricing
LunarWerx LLC is a for-profit company. Payments are not charitable donations and are not tax-deductible.
$15
one month as a Supporter
9 hours
on an A100 80GB GPU, at RunPod's $1.59 an hour
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.