An imaging apparatus for diagnosis and a control method of an imaging apparatus for diagnosis are disclosed, which acquire line data represented by multiple luminance values in a radial direction from a rotation center position of an imaging core, which are derived by a rotation position and movement of the imaging core. Then, based on the acquired line data, an image of a two-dimensional space in which θ representing a rotation angle and z representing a position in a movement direction are set to two axes is generated and displayed.
