A medical image diagnostic apparatus includes an input unit to input personal information of a subject, a communication unit to communicate with a personal information managing server for storing the personal information, and a judge unit to judge whether the personal information can be transmitted to a personal information managing server. The communication unit transmits the personal information to the personal information managing server and receives personally-identifying information for identifying the personal information in response to the personal information transmitted, when the judge unit judges that the personal information can be transmitted. A memory for examination information stores the personally-identifying information.
