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36. Investigation of the signature of lung tissue in X-ray grating-based phase-contrast imaging

Author

Weber, Thomas, Bayer, Florian, Haas, Wilhelm, Pelzer, Georg, Rieger, Jens, Ritter, Andr��, Wucherer, Lukas, Braun, Jan Matthias, Durst, J��rgen, Michel, Thilo, and Anton, Gisela

Subjects
Biological Physics (physics.bio-ph), FOS: Physical sciences, Medical Physics (physics.med-ph), Physics - Biological Physics, Physics - Medical Physics
Abstract

Purpose: Grating-based X-ray phase-contrast imaging is a promising modality increasing the soft tissue contrast in medical imaging. In this work, the signature of lung tissue in X-ray grating-based physe-contrast imaging is investigated. Methods: We used a Talbot-Lau interferometer for our investigations of two C57BL/6 mice. Both underwent projection imaging and computed tomography. Results: The results show that the three images obtained by X-ray phase-contrast imaging show complementary anatomical structures. Especially the dark field image allows a more-exact determination of the position of the lung in the chest cavity. Conclusion: Due to its sensitivity to granular structures, the dark field image may be used for the diagnosis of lung diseases in earlier stages or without a CT scan. Furthermore, X-ray phase-contrast imaging may also have great potential in the application of animal laboratory sciences to reduce the number of required animals used in long-term translational, toxicity, and regenerative medicine studies.

Published
2012

37. Interplay of magnetic and superconducting proximity effects in ferromagnet-superconductor-ferromagnet trilayers

Author

Lofwander, T, Champel, T, Durst, J, and Eschrig, Matthias

Subjects
Condensed Matter::Materials Science, Research Groups and Centres\Physics\Low Temperature Physics, Faculty of Science\Physics, Condensed Matter::Superconductivity, proximity effect, josephson JUNCTION, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Abstract

We present theoretical results on the interplay of magnetic and superconducting orders in diffusive ferromagnet-superconductor-ferromagnet trilayers. The induced triplet superconducting correlations throughout the trilayer lead to an induced spin magnetization. We include self-consistency of the order parameter in the superconducting layer at arbitrary temperatures, arbitrary interface transparency, and any relative orientation of the exchange fields in the two ferromagnets. We propose to use the torque on the trilayer in an external magnetic field as a probe of the presence of triplet correlations in the superconducting phase.

Published
2007

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