Australia’s radiology sector is a vital part of the healthcare system, providing essential diagnostic imaging services such as X-rays, MRIs, CT scans, ultrasounds, and nuclear medicine. With an aging population and rising demand for diagnostic procedures, the industry continues to grow steadily. Several major companies dominate this landscape, delivering a wide range of imaging services across the country. Here’s an overview of the largest radiology companies in Australia as of 2025.
1. I-MED Radiology Network
I-MED Radiology is the largest diagnostic imaging services provider in Australia, boasting a nationwide network of over 250 clinics. With an estimated revenue of approximately $1.385 billion in 2025, I-MED offers a comprehensive suite of imaging modalities including MRI, CT, X-ray, ultrasound, and nuclear medicine.
Beyond traditional imaging, I-MED also operates i-TeleRAD, a leading teleradiology service, and Annalise.ai, a pioneering medical imaging artificial intelligence company. This integration of technology and extensive clinical services positions I-MED as a market leader in both service delivery and innovation.
2. Sonic Healthcare
Ranking second in the market, Sonic Healthcare generated around $960 million in revenue in 2025. Sonic is a global healthcare company with a strong presence in Australia’s radiology market, providing diagnostic imaging services alongside its pathology operations.
Sonic’s radiology division offers a broad range of imaging services and is known for its commitment to quality and comprehensive patient care. Its extensive network ensures accessibility and reliability across urban and regional areas.
3. Integral Diagnostics
Integral Diagnostics is another major player with an estimated revenue of $571.5 million in 2025. Integral Diagnostics operates numerous clinics across Australia and New Zealand, delivering diagnostic imaging services including MRI, CT, ultrasound, X-ray, and nuclear medicine.
The company focuses on providing patient-centred care with advanced imaging technologies and has a strong emphasis on research and education within the radiology field.
Other Notable Companies
While I-MED, Sonic Healthcare, and Integral Diagnostics dominate the market, other significant providers contribute to Australia’s radiology landscape, including:
- Healius Limited (formerly Primary Health Care Limited), which operates imaging centers alongside pathology services.
- Capitol Health Limited, a specialist diagnostic imaging provider with a growing presence.
- Various regional and specialist imaging centers that serve local communities.
Industry Trends Driving Growth
- Aging Population: Australia’s increasing elderly demographic is driving demand for diagnostic imaging, particularly for chronic and age-related conditions such as dementia and cancer.
- Technological Advancements: Adoption of advanced imaging modalities like 3T MRI scanners and AI-driven diagnostic tools is enhancing service quality and efficiency.
- Medicare Support: Government funding through Medicare continues to underpin industry revenue by subsidizing diagnostic imaging procedures, encouraging volume growth.
Conclusion
Australia’s radiology industry is anchored by a few dominant companies that provide comprehensive diagnostic imaging services nationwide. I-MED Radiology Network leads the pack with its extensive clinic network and innovative technology integration, followed by Sonic Healthcare and Integral Diagnostics. Together, these companies shape the future of medical imaging in Australia, driven by demographic trends and technological progress.
For patients and healthcare providers alike, these companies represent trusted sources for high-quality, accessible radiology services.