Should you’ve ever had a PET scan, you realize it’s a tribulation. The scans assist medical doctors hit upon most cancers and observe its unfold, however the procedure itself is a logistical nightmare for sufferers.
It begins with fasting for 4 to 6 hours sooner than entering the health center — and just right success to you in the event you reside rurally and your native health center doesn’t have a PET scanner. Whilst you get to the health center, you’re injected with radioactive subject material, and then you will have to look forward to an hour whilst it washes thru your frame. Subsequent, you input the PET scanner and need to try to lie nonetheless for half-hour whilst radiologists gain the picture. After that, you must stay bodily clear of the aged, younger other folks, and pregnant ladies for as much as 12 hours since you’re actually semi-radioactive.
Every other bottleneck? PET scanners are concentrated in main towns as a result of their radioactive tracers will have to be produced in close by cyclotrons — compact nuclear machines — and used inside hours, proscribing get entry to in rural and regional hospitals.
However what if you need to use AI to transform CT scans, which can be a lot more obtainable and inexpensive, into PET scans? That’s the pitch of RADiCAIT, an Oxford spinout that got here out of stealth this month with $1.7 million in pre-seed financing. The Boston-based startup, which is at Best 20 finalist in Startup Battlefield at TechCrunch Disrupt 2025, has simply opened a $5 million elevate to advance its medical trials.
“What we in reality do is we took essentially the most constrained, complicated, and expensive clinical imaging resolution in radiology, and we supplanted it with what’s the maximum obtainable, easy and inexpensive, which is CT,” Sean Walsh, RADiCAIT’s CEO, instructed TechCrunch.
RADiCAIT’s secret sauce is its foundational style — a generative deep neural community invented in 2021 on the College of Oxford via a crew led via the startup’s co-founder and leader clinical knowledge officer, Regent Lee.

The style learns via evaluating CT and PET scans, mapping them, and choosing out patterns in how they relate to one another. Sina Shahandeh, RADiCAIT’s leader technologist, describes it as connecting “distinct bodily phenomena” via translating anatomical construction into physiological serve as. Then the style is directed to pay additional consideration to express options or facets of the scans, like sure forms of tissue or abnormalities. This targeted finding out is repeated repeatedly with many alternative examples, so the style can determine which patterns are clinically vital.
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The overall symbol that is going to medical doctors for evaluation is created via combining a couple of fashions operating in combination. Shahandeh compares the technique to Google DeepMind’s AlphaFold, the AI that revolutionized protein construction prediction: Each methods learn how to translate one form of organic knowledge into every other.
Walsh claims the crew at RADiCAIT can mathematically end up that their artificial or generated PET pictures are statistically very similar to actual chemical PET scans.
“That’s what our trials display,” he mentioned, “that the similar high quality of choice has been made when the physician, radiologist, or oncologist is given a chemical PET or [our AI-generated PET].”
RADiCAIT doesn’t promise to interchange the will for PET scans in particular healing settings, like radioligand treatment, which kills most cancers cells. However for diagnostic, staging, and tracking functions, RADiCAIT’s generation would possibly make PET scans out of date.

“As it’s this type of constrained device, there’s now not sufficient provide to fulfill call for for diagnostics and theragnostics,” Walsh mentioned, regarding a clinical way that mixes diagnostic imaging (i.e., PET scans) with focused treatment to regard sicknesses (i.e., most cancers). “So what we’re taking a look to do is take in that call for at the diagnostic aspect. PET scanners themselves will have to pick out up the slack at the theragnostic aspect.”
RADiCAIT has already begun medical pilots particularly for lung most cancers trying out with main well being methods like Mass Basic Brigham and UCSF Well being. The startup is now pursuing an FDA medical trial — a dearer and concerned procedure that’s using RADiCAIT’s $5 million seed spherical. As soon as that’s authorized, the next move will probably be to do business pilots and show the economic viability of the product. RADiCAIT additionally desires to run the similar procedure — medical pilots, medical trials, business pilots — for colorectal and lymphoma use circumstances.
Shahandeh mentioned RADiCAIT’s technique to the use of AI to yield legitimate insights with out the burdens of inauspicious and dear checks is “extensively acceptable.”
“We’re exploring extensions throughout radiology,” Shahandeh added. “Be expecting to look an identical inventions linking domain names from fabrics science to biology, chemistry, and physics anywhere nature’s hidden relationships may also be realized.”
If you wish to listen extra about RADiCAIT sign up for us at Disrupt, October 27 to 29 in San Francisco. Be informed extra right here.


