Figure 12
Tomographic reconstructions of a cross section of a chemically fixed human lung (a Heitzman preparation, courtesy of Professor J. Ikezoe and Dr K. Shimizu). (a) Image obtained by a conventional tomography technique using absorption contrast (specimen-to-detector distance: 5 cm). (b) Image obtained by using refraction contrast (specimen-to-detector distance: 50 cm). Both reconstructions were calculated from images recorded at BL20B2 of SPring-8, using Beam Monitor 2 and a cooled CCD camera (Hamamatsu C4880-10-24A, 1000 × 1018 pixels). The actual size is about 4 mm square. |