Inherent dose-reduction potential of classical ghost imaging

Classical ghost imaging is a computational technique that employs patterned illumination. It very similar in concept to the single-pixel camera an image may be reconstructed from set of measurements even though all quanta pass through sample are never recorded with position resolving detector. The method was first conceived and applied for visible-wavelength photons subsequently translated other probes such as x rays, atomic beams, electrons neutrons. In context using penetrating enable transmission measurement, we here consider several questions relating achievable signal-to-noise ratio (SNR). This compared SNR conventional under scenarios constant radiation dose experiment time, considering both photon shot-noise per-measurement electronic read-out noise. We show inherent improved capabilities limited subset these actually due increased (Fellgett advantage). An explanation also presented recent results published literature not consistent findings.