X-ray white beam based 26.7 Hz dynamic tomography

Abstract

Synchrotron radiation micro-computed tomography (SR-µCT) is a vital technique for the quantitative characterization of three-dimensional internal structures across diverse fields, including energy, integrated circuits, materials science, biomedicine, archaeology etc. While SR-µCT provides high spatial resolution and high image contrast, it typically offers only moderate temporal resolution, with acquisition times ranging from minutes to hours. Recently, dynamic SR-µCT has attracted significant interest for its capacity to capture real-time three-dimensional structural evolution. Here, we demonstrate a dynamic SR-µCT system operating at 26.7 Hz, developed at the BL09B test beamline of the Shanghai Synchrotron Radiation Facility using a filtered white beam. The key components of this system include an air-cooling millisecond fast shutter, an air-bearing rotation stage, a high-efficiency detector integrated with a Photron FASTCAM SA-Z camera and a custom-designed optical system, and a synchronization clock to ensure precise temporal alignment of all devices. Experimental results confirm the feasibility of this approach for in vivo four-dimensional studies, making it particularly promising for applications in biomedical research and related disciplines.