High-Energy X-Ray Phase-Contrast CT for Lung Imaging

Strategic Insights -

Researchers from Monash University have successfully demonstrated the feasibility of high-energy propagation-based computed tomography for human adult-scale lung imaging using the Australian Synchrotron's Imaging and Medical Beamline. This novel technique offers a significant advancement in medical imaging, allowing for lower radiation doses and improved diagnostic accuracy for lung diseases. The study, published in Scientific Reports, showcases the potential of this technology in clinical adult lung imaging, a significant step towards improving patient care and outcomes.

Key Takeaways:

  • The research team used a high-energy X-ray phase-contrast CT technique to image an anthropomorphic chest phantom (LungMan) between 50keV and 80keV, achieving strong phase-contrast fringes with a photon-counting detector.
  • The study found that the optimal configuration for imaging was at approximately 70keV and the longest available propagation distance of 7.5m, suggesting potential benefits in positioning the patient in an upstream hutch.
  • The results align with reference soft tissue values, validating the phantom for phase-contrast studies and demonstrating the technique's potential in clinical adult lung imaging.
  • The use of high-energy X-ray phase-contrast CT offers a promising approach for reducing radiation doses, improving imaging quality, and enhancing diagnostic accuracy for lung diseases.
  • The research team included Jannis N. Ahlers, Lorenzo D. Amico, Henriette Bast, Lucy F. Costello, Martin Donnelley, Samantha J. Alloo, Stephanie A. Harker, Ying Ying How, Michelle K. Croughan, James A. Pollock, Daniel Hausermann, Anton Maksimenko, Christopher Hall, and Timur E. Gureyev from Monash University and the Australian Synchrotron.

Statistics:

  • The research was conducted between 50keV and 80keV, covering a significantly wider energy range than previous studies.
  • The maximum propagation distance used in the study was 7.5m, which was found to be the optimal configuration for imaging.
  • The study used a photon-counting detector, which achieved strong phase-contrast fringes, while an integrating detector with lower spatial resolution showed no clear phase effects.
  • The imaging quality assessments suggest that the high-energy X-ray phase-contrast CT technique has the potential to reduce radiation doses and improve imaging quality for clinical adult lung imaging.

Sources:

  • High-energy X-ray phase-contrast CT of an adult human chest phantom. Scientific Reports, 2025;15(1):29314.
  • Nature Portfolio, Heidelberger Platz 3, Berlin, 14197, Germany.
  • NewsRx. Researchers from Monash University Provide Details of New Studies and Findings in the Area of Breast Cancer Screening (High-energy X-ray phase-contrast CT of an adult human chest phantom). Physics Week. August 26, 2025; p 430.