Disclosed is a method for assisting in a diagnosis using images obtained by a plurality of signal transceivers. The method includes causing a drive unit for driving a probe inserted in a blood vessel to execute a first driving to perform measurement using a first signal transceiver on the probe and a second driving to perform measurement using a second signal transceiver on the probe. The method includes acquiring a signal measured using the first signal transceiver on the probe during the first driving, information indicating a position of the first signal transceiver when the signal is obtained, a signal measured using the second signal transceiver on the probe during the second driving, and information indicating a position of the second signal transceiver when the signal is obtained. The method includes causing a display unit to simultaneously display a first vascular image at a first intravascular position obtained using the first signal transceiver and a second vascular image at the first intravascular position obtained using the second signal transceiver.
