Dental is now the company’s primary revenue generator and, along with our audiology and radiology businesses, is targeted for ongoing investment. In FY12, dental growth was predominantly through acquisition, with our trans-Tasman group expanding to 117 practices in total by year end. We acquired 26 practices during the year, which will provide approximately $42 million in additional gross annualised revenues. The total consideration for these acquisitions was $30 million.
Organic growth was the focus for radiology, as we concentrated on building patient bookings for our new PET CT scanning centre at Ascot Radiology, which was opened at the end of FY11, as well as maximising utilisation of our numerous other services. Including the confirmed $4 million investment into the new Millennium clinic due to open in late 2012, Abano’s radiology group is now one of the largest specialist referral practices in Auckland.
We continued to strengthen the infrastructure of our emerging audiology businesses in Australia and Asia.
Good progress is being made in audiology, after a year of bedding in the new regional management teams and improving our unique lead generation through self testing touch screens. We have been operating in Australia for several years longer than in Asia, and therefore our Australian business is more developed and larger than our Asian network. Audiology revenues have grown steadily over the last twelve months and we are on track to achieve break even in the next two to three years.
Hold and maintain strategies continued for our brain injury rehabilitation, orthotics and pathology businesses, as we maximised their performance in a restrictive, publicly funded environment. Following year end, we announced the sale of our brain injury rehabilitation business, which presented limited opportunities for growth and was mostly funded by public health contracts, and therefore was not in line with our investment strategy.
During FY12, our business leaders were charged with continuing to find growth opportunities within their organisations and lifting performance.
Pleasingly, all businesses delivered improvements in margins over the previous year. Of particular note was the success of the nationwide marketing campaign for Lumino the Dentists, which aimed to increase customer visits and increase utilisation of dentist capacity. Results to date have been outstanding with new patient count up by 13% year on year, and an average dentist utilisation of over 80% since the campaign began.