Patterned X‑ray method enables fast 3‑D chemical imaging with fewer scans

A team of scientists from Bar‑Ilan University and collaborators at multiple other institutes has introduced an X‑ray imaging technique capable of rebuilding an object’s three‑dimensional chemical makeup while requiring far fewer measurements than conventional methods.

Obtaining a three‑dimensional map of a specimen’s internal chemistry has traditionally demanded either protracted tomographic scans or intricate spectroscopic arrangements, each demanding considerable time and subjecting the sample to substantial radiation. Conventional approaches typically gather a complete series of projections from numerous angles before analyzing the data to isolate elemental contributions.

The novel strategy swaps the exhaustive scan for a set of patterned X‑ray exposures. By directing a succession of structured X‑ray beams onto the specimen and capturing the ensuing intensity patterns, the researchers can deduce the spatial arrangement of various elements using markedly fewer shots. Subsequent computational algorithms interpret the sparse measurements, yielding a three‑dimensional chemical map in only a fraction of the original time.

Central to the technique is the deployment of mathematically crafted patterns that extract maximal information from each exposure. Coupled with sophisticated reconstruction software, the method pulls both structural and compositional signals from the limited data, essentially condensing what would ordinarily be a huge dataset into a concise form while preserving precision.

The approach holds promise across numerous disciplines. In materials science, rapid evaluation of alloy makeup or impurity detection could speed up prototype assessments. Drug producers might employ the system to confirm the homogeneity of pharmaceutical formulations. Conservators working on cultural heritage pieces could probe layered pigments with minimal radiation, while medical scientists anticipate low‑dose imaging of mineralized tissues.

The team intends to fine‑tune the pattern designs and investigate coupling the method with current synchrotron installations. Ongoing work includes broader validation on varied sample types, and partnerships with industry aim to convert the laboratory proof‑of‑concept into a market‑ready imaging device. Success would establish a new benchmark for fast, low‑dose chemical tomography.