With a mobile X-ray apparatus disclosed, an operator is able to go rounds without contacting to the mobile X-ray apparatus while the mobile X-ray apparatus traveling automatically tracks the operator. Since the operator controls the mobile X-ray apparatus without contacting to the mobile X-ray apparatus, the operator is able to carry more items necessary for patient diagnosis with an operator's free hand. In addition, the mobile X-ray apparatus automatically travels while tracking the operator from behind. Accordingly, an operator's view is not obstructed, ensuring prevention of the mobile X-ray apparatus from contacting to the obstructions. Moreover, when the operator enters into a no-entry area for the mobile X-ray apparatus, it is detected that the mobile X-ray apparatus is now ready to enter into the no-entry area, and accordingly, the mobile X-ray apparatus stops its automatic tracking function. With the above configuration, the mobile X-ray apparatus allows automatic travelling while tracking the operator, and also allows automatic prevention of the mobile X-ray apparatus from entering into the no-entry area. As a result, rounds with the mobile X-ray apparatus are performable in a safer manner.
