view article
Figure 8
(a) Density resolution of sectional images obtained from X-ray phase contrast tomography with different exposure times. Insets represent a coronal plane of the hippocampus on rat brain at each exposure time. In this case the rotational axis is perpendicular to the coronal plane of the brain. The measurement conditions in X-ray phase contrast tomography are as follows: number of projections: 900, with five-step phase stepping; interval for flat-field correction: 18°. The effective pixel size is 24.6 µm per pixel (2 × 2 binning). In this condition the number of projections is approximately 1.5 times larger than the sampling width (the number of pixels) for the longitudinal direction in the coronal section of the rat brain. This means that the reconstructed images are over-sampled by projection images. (b) Fluctuations of the intensity in the background in the differential phase images during the tomographic measurement. The horizontal axis represents the number of projections.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 21| Part 6| October 2014| Pages 1347-1357
doi:10.1107/S1600577514018128
Follow J. Synchrotron Rad.
Sign up for e-alerts
E-alerts
Follow J. Synchrotron Rad. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS