TY  - JOUR
A1  - Ullherr, Maximilian
A1  - Diez, Matthias
A1  - Zabler, Simon
T1  - Robust image reconstruction strategy for multiscalar holotomography
JF  - Journal of Imaging
N2  - Holotomography is an extension of computed tomography where samples with low X-ray absorption can be investigated with higher contrast. In order to achieve this, the imaging system must yield an optical resolution of a few micrometers or less, which reduces the measurement area (field of view = FOV) to a few mm at most. If the sample size, however, exceeds the field of view (called local tomography or region of interest = ROI CT), filter problems arise during the CT reconstruction and phase retrieval in holotomography. In this paper, we will first investigate the practical impact of these filter problems and discuss approximate solutions. Secondly, we will investigate the effectiveness of a technique we call “multiscalar holotomography”, where, in addition to the ROI CT, a lower resolution non-ROI CT measurement is recorded. This is used to avoid the filter problems while simultaneously reconstructing a larger part of the sample, albeit with a lower resolution in the additional area.
KW  - reconstruction
KW  - region of interest
KW  - ROI
KW  - multiscalar holotomography
KW  - holotomography
KW  - computed tomography
KW  - CT
KW  - X-ray
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-262112
SN  - 2313-433X
VL  - 8
IS  - 2
ER  -