Next generation high resolution perovskite direct conversion detector: Monte Carlo design optimisation and virtual...

Area of Science:

• Medical Physics
• Materials Science
• Radiological Imaging

Background:

• Current X-ray detectors face limitations in efficiency and cost.
• Perovskite materials offer potential for high-performance, low-cost X-ray detection.

Purpose of the Study:

• To virtually integrate next-generation perovskite detectors into X-ray imaging devices.
• To optimize perovskite detector design for breast CT and cone beam CT applications.
• To evaluate the performance improvements offered by perovskite detectors.

Main Methods:

• Monte Carlo (MC) simulations were used to optimize perovskite detector design.
• Energy deposition efficiencies of methylammonium lead bromide perovskite were benchmarked against other materials.
• System-specific simulations were performed for Koning breast CT and Varian Truebeam systems.

Main Results:

• Optimal perovskite crystal thicknesses were determined for different CT systems (0.30 mm for breast CT, 0.86 mm for kV-CBCT, 1.99 mm for MV-CBCT).
• Simulations indicated suitability of perovskite detectors for Koning and Varian systems.
• Potential improvements in detective quantum efficiency (up to 86.1%) and contrast-to-noise ratio were predicted.

Conclusions:

• Perovskite detectors are suitable for next-generation breast and cone beam CT systems.
• Implementing perovskite detectors could lead to significant performance enhancements.
• Low-cost perovskite detectors offer a promising alternative to current X-ray detector technologies.