Fates - Compact, Sensitive X-ray Differential Phase Contrast Imaging System

Researchers in Prof. Lambertus Hesselink's laboratory have developed a compact, sensitive X-ray differential phase contrast (DPC) imaging system that improves field of view, increases fringe visibility and shortens imaging times. This technology, called Fates, replaces the standard 3-grating system architecture with a single grating that is combined with a specialized, patterned x-ray source (PexSA - described in Stanford Docket S12-318) and x-ray detector (PcXDa – described in Stanford Docket S15-291). By eliminating two expensive grating components, the overall size and potential cost of the system is reduced. Furthermore, this configuration enables a single-step image acquisition with a field-of-view of approximately 35 degrees and fringe contrast approaching 50%. This technology could allow users to distinguish between hazardous and non-hazardous materials in baggage inspection applications or to identify tumors in medical imaging applications.

Stage of Research
The inventors are building a prototype Fates system with preliminary results in the following applications:
- Aviation security – improved object identification (see figure)
- Medical imaging – improved detection and imaging of soft tissue density and tumors

DPC at 40keV reveals liquids and powders in cluttered carry-on bag environment