Diagnosing and mapping pulmonary emphysema on X-ray projection images: incremental value of grating-based X-ray dark-field imaging. oleh Felix G Meinel, Felix Schwab, Simone Schleede, Martin Bech, Julia Herzen, Klaus Achterhold, Sigrid Auweter, Fabian Bamberg, Ali Ö Yildirim, Alexander Bohla, Oliver Eickelberg, Rod Loewen, Martin Gifford, Ronald Ruth, Maximilian F Reiser, Franz Pfeiffer, Konstantin Nikolaou