Table 1. Data acquisition parameters for the three different geometries: (KB) broadened beam after focusing by KB-mirrors for whole organ, (PB) Parallel beam, (WG) waveguide setup for holo-tomography at high geometric magnification.

illumination	KB	PB	WG
photon energy (keV)	13.8	13.8	8
source-sample-dist. $x_{01}$ (m)	5.06	88	0.12
sample-detector-dist. $x_{12}$ (m)	0.34	0.22	4.98
effective pixel size (µm)	3.25	0.65	0.1675
field-of-view (${\mathrm{mm}}^2$)	8 $\times$ 7	1.6 $\times$ 1.4	0.42 $\times$ 0.36
acquisition time (s)	1	0.035	1
number of projections	2001	1500	1500
number of flats	200	150	50