| Autor: |
Navarrete-Leon, Carlos, Patrick, P. Stephen, Doherty, Adam, Allan, Harry, Cipiccia, Silvia, Marathe, Shashidhara, Wanelik, Kaz, Esposito, Michela, Hagen, Charlotte K., Olivo, Alessandro, Endrizzi, Marco |
| Rok vydání: |
2023 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| Popis: |
Two-directional beam-tracking (2DBT) is a method for phase-contrast imaging and tomography that uses an intensity modulator to structure the X-ray beam into an array of independent circular beamlets that are resolved by a high-resolution detector. It features isotropic spatial resolution, provides two-dimensional phase sensitivity, and enables the three-dimensional reconstructions of the refractive index decrement, $\delta$, and the attenuation coefficient, $\mu$. In this work, we report on the angular sensitivity and the spatial resolution of 2DBT images in a synchrotron-based implementation. In its best configuration, we obtained angular sensitivities of $\sim$20 $n$rad and spatial resolution of at least 6.25 $\mu$m in phase-contrast images. We also demonstrate exemplar application to the three-dimensional imaging of soft tissue samples, including a mouse liver and a decellularised porcine dermis. |
| Databáze: |
arXiv |
| Externí odkaz: |
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