There is provided a medical imaging system, a medical imaging method, and a medical imaging program capable of easily checking the imaging timing of an image and the injection timing of a contrast agent. The medical imaging system includes: a slice image acquisition unit that acquires a set of slice images of a subject with an image management information for managing the slice images； an injection information acquisition unit that acquires contrast agent injection information that is information regarding a contrast agent； an injection progress imaging unit that generates an injection progress image showing an injection progress of the contrast agent based on the contrast agent injection information； an association constructing unit that associates the contrast agent injection information with the slice image based on the contrast agent injection information and the image management information； and an output unit that outputs an slice image from the set of slice images and that outputs the contrast agent injection information associated with the slice image, the injection progress image generated based on the contrast agent injection information, and the image management information corresponding to the slice image, so as to be superimposed on each other.
