Sydney medical imaging company Harrison.ai says its Annalise AI is now deployed in more than 1,000 healthcare facilities across 15 countries, including the UK’s NHS, following a $179 million Series C raised in 2025.
Radiology is one of the areas where AI has moved furthest from pilot to everyday use. Health systems face growing scan volumes and a shortage of radiologists, and tools that flag findings on an image can help clinicians prioritise urgent cases. Harrison.ai has built one of the broadest products in the category from Australia, though it remains little known locally.
How it works
Annalise reviews chest X-rays and non-contrast brain CT scans and flags findings for the radiologist to review. According to the company, it can detect up to 124 findings on chest X-rays and 130 on head CTs. The product is designed to support radiologists, helping them catch findings sooner and work through reporting queues faster, rather than to replace them.
The company says Annalise supports the care of more than 6 million patients a year.
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, according to UNSW. At 24, while still a student at UNSW, he built the company’s first algorithm, which analysed IVF embryos growing in an incubator to identify the one most likely to develop a fetal heartbeat.
The money
The 2025 Series C was co-led by Aware Super, ECP and Horizons Ventures and included $32 million from the Australian Government’s National Reconstruction Fund. Total funding is more than $387 million, as reported.
The US reimbursement
In 2024 one of Harrison.ai’s brain CT tools, for obstructive hydrocephalus, was granted a New Technology Add-on Payment under the US Medicare program. That allows hospitals to claim additional payments when they use the tool.
Reimbursement is one of the hardest problems for medical AI companies, since hospitals are often reluctant to pay for software that no insurer covers. A payment pathway in the US gives Harrison.ai a stronger case when selling into American hospitals, the largest healthcare market in the world.
Jack’s take
While everyone debates whether AI will replace doctors, Harrison is already making them faster. Getting a government payer to cover the software is the part I would watch, because that is what turns a clever tool into a business.