A Sydney AI company is helping doctors read scans in more than 1,000 healthcare facilities around the world, and most Australians have never heard of it.
The founders
Harrison.ai was founded by brothers Dr Aengus Tran and Dimitry Tran. Aengus was born and raised in Vietnam and moved to Australia in year 8. At 24, while still a student at UNSW, he built the company’s first algorithm, which analysed IVF embryos growing in an incubator to pick the one most likely to develop a fetal heartbeat.
How it works
Its bigger product, Annalise, reviews chest X-rays and brain CT scans and flags what it finds for the radiologist. It can detect up to 124 findings on chest X-rays and 130 on non-contrast head CTs. The pitch is not replacing the radiologist. It’s catching things sooner and helping them get through the pile faster.
The scale
Annalise is deployed in 1,000+ facilities across 15 countries, including the UK’s NHS, and supports the care of more than 6 million patients a year.
The money
In 2025 Harrison.ai raised a $179M Series C co-led by Aware Super, ECP and Horizons Ventures. That included $32M from the Australian Government’s National Reconstruction Fund. Total funding is more than $387M, as reported.
The US angle
In 2024 one of its brain CT tools, for obstructive hydrocephalus, was granted a Medicare New Technology Add-on Payment in the US. That means hospitals can claim extra payments when they use it, which is rare for AI software and a big help when selling into American hospitals.
My read
While everyone debates whether AI will replace doctors, Harrison is already making them faster. Getting a government payer to pay for the software is the part I’d watch. That’s what turns a clever tool into a business.