Review about Coherent and Incoherent Imaging Signals for Computerized Neutron Tomography

In the last decade computerized neutron tomography has experienced a number of improvements which were realized by different groups, but which became not so familiar as the well known “old” signals known from radiography and tomography. So it seems to be useful to give a summary over all known neutron imaging signals that will be used nowadays and to give some examples of them. The distinction between incoherent and coherent signals appears to be helpful concerning the wide range of (possible) signals that are use for imaging and image processing . The kind of signals will be limited to the ones that have been already used in neutron tomography, so there will no discussion about e.g. electric field tomography or impedance tomography.