A method for assisting in a diagnosis using images obtained by a plurality of signal transceivers includes causing a drive 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, 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, and causing a display 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.
