But unsure where to focus his research, he had a conversation with a professor the same day the professor's mother had been diagnosed with breast cancer and it took his interest down an unexpected path. "Most of the AI back when I started was based around mobile robots and making vehicles move around autonomously in factories. That frankly wasn't very interesting to me," he told news.com.au. As part of his PhD he began to pioneer a way to use computer software to detect and measure breast density in screening images. At the time, breast cancer screening was far from perfect and he thought artificial intelligence could revolutionise it.