A medical imaging apparatus includes: a casing configured to form an exterior an imaging unit housed in the casing and configured to capture a subject image a manipulation ring rotatably provided on an outer surface of the casing a detection unit configured to detect rotation of the manipulation ring a manipulation calculation unit configured to calculate a rotation direction and a rotation angle of the manipulation ring based on a detection result of the detection unit a function execution unit configured to execute a first or second function depending on the rotation direction and the rotation angle of the manipulation ring calculated by the manipulation calculation unit and a function switch unit configured to switch a function executed by the function execution unit to the first or second function.