PhasenkontrastMikroCT

PhasenkontrastMikroCT, also known as Phase Contrast Microtomography, is an advanced X-ray imaging technique that leverages the wave-like properties of X-rays to visualize microscopic structures. Unlike conventional absorption-based microtomography, which relies on differences in how materials absorb X-rays, phasenkontrastMikroCT detects the phase shifts that X-rays undergo when passing through a sample. These phase shifts are much more sensitive to subtle variations in material density and composition, particularly for low-contrast materials like soft tissues or polymers.

The technique typically requires a highly coherent X-ray source, such as synchrotron radiation or microfocus X-ray tubes, to generate a wavefront that can be modulated by the sample. Interferometers or grating-based setups are commonly employed to measure these phase shifts. By rotating the sample and acquiring multiple projections, a 3D reconstruction of the object's internal structure can be generated, offering significantly enhanced contrast and detail compared to traditional methods. This makes it particularly useful in fields such as materials science, where it can reveal microstructural defects, and in biomedical imaging, for visualizing delicate biological specimens without the need for contrast agents.