A radiographic imaging apparatus includes an imaging apparatus and a hardware processor. The imaging apparatus obtains moire fringe images for generating a reconstruction image of a subject by using a Talbot-Lau interferometer comprising a radiation source, a multiple slit, a first grating, a second grating and a radiation detector. The hardware processor performs a control to satisfy relations (i) φ≥(1/2)×(RS/R1)×d1>φ×0.7, (ii) 1≤φ≤10 (μm), and (iii) 0.5≤(Rs/R1)≤1. φ is a particle size of a microbubble contrast agent to be used in imaging. d1 is a slit period of the first grating. R1 is a distance between the multiple slit and the first grating. Rs is a distance between the multiple slit and the subject.