An imaging apparatus for diagnosis (100) comprises a display unit (113) configured to display a longitudinal-sectional image (422) in a first display area (420), and display a cross-sectional image corresponding to an arbitrary position in an axial direction in the longitudinal-sectional image (411) in a second display area (410) a signal processing unit (223) divides the second display (410) area into at least two individual areas (611,612) in case of accepting an instruction to the effect that a predetermined operation is executed with respect to the first display area (420) and the signal processing unit (223) displays indicators (621,622) in the first display area (420), wherein in a case in which the second display area (410) is divided into at least two individual areas (611,612), cross-sectional images corresponding to the axial direction position are displayed by at least two indicators in respective individual areas.
