PROBLEM TO BE SOLVED: To detect an echo signal in accurate timing.SOLUTION: A transmission coil 3 emits an RF (Radio Frequency) pulse. A reception coil 4 receives the RF pulse and the echo signal. A wireless transmission part 11 wirelessly transmits the RF pulse and the echo signal received by the reception coil 4. A wireless reception part 12 wirelessly receives the RF pulse and the echo signal transmitted by the wireless transmission part 11. A timing detection part 13 detects timing of the RF pulse received by the wireless reception part 12. An echo signal detection part 14 detects the echo signal based on information indicating an interval between the timing of the RF pulse and timing when the RF pulse prescribed in sequence information is emitted, and timing when the echo signal emitted from a test subject is received.
