A control device comprising: a drive control unit configured to control a drive unit that drives a probe inserted in a blood vessel to execute a first driving to perform a measurement using a first signal transceiver on the probe, said first signal transceiver being an intravascular ultrasound IVUS-transceiver, and a second driving to perform a measurement using a second signal transceiver on the probe, said second signal transceiver being an optical coherent tomography OCT-transceiver; an acquisition unit configured to (i) acquire a signal measured using the first signal transceiver on the probe during the first driving, (ii) information indicating a position of the first signal transceiver when the signal is obtained, (iii) a signal measured using the second signal transceiver on the probe during the second driving, and (iv) information indicating a position of the second signal transceiver when the signal is obtained; and a display control unit configured to control a display unit (380, 500) 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, characterized in that the first vascular image is an ultrasound cross-sectional image and the second vascular image is an optical cross-sectional image and said first and second vascular images are generated from line data with which the information acquired by the acquisition unit indicates a measurement direction by the first and the second signal transceivers when the signal is obtained while the probe is being rotated, and are displayed such that rotational angles of the first vascular image and the second vascular image are adjusted such that their angular directions are aligned, the control device further comprising a generation unit configured to generate a vascular axial sectional image of the blood vessel based on the signal from the first signal transceiver, wherein the display control unit further controls the display unit (380, 500) to display the vascular axial sectional image, and the control device further comprising a reception unit configured to receive the designation of a measurement range in the vascular axial section image which is based on the signal obtained by the first signal transceiver during or after the first driving, wherein the second signal transceiver performs the measurement within the designated measurement range during the second driving. a drive control unit configured to control a drive unit that drives a probe inserted in a blood vessel to execute a first driving to perform a measurement using a first signal transceiver on the probe, said first signal transceiver being an intravascular ultrasound IVUS-transceiver, and a second driving to perform a measurement using a second signal transceiver on the probe, said second signal transceiver being an optical coherent tomography OCT-transceiver; an acquisition unit configured to (i) acquire a signal measured using the first signal transceiver on the probe during the first driving, (ii) information indicating a position of the first signal transceiver when the signal is obtained, (iii) a signal measured using the second signal transceiver on the probe during the second driving, and (iv) information indicating a position of the second signal transceiver when the signal is obtained; and a display control unit configured to control a display unit (380, 500) 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, characterized in that the first vascular image is an ultrasound cross-sectional image and the second vascular image is an optical cross-sectional image and said first and second vascular images are generated from line data with which the information acquired by the acquisition unit indicates a measurement direction by the first and the second signal transceivers when the signal is obtained while the probe is being rotated, and are displayed such that rotational angles of the first vascular image and the second vascular image are adjusted such that their angular directions are aligned, the control device further comprising a generation unit configured to generate a vascular axial sectional image of the blood vessel based on the signal from the first signal transceiver, wherein the display control unit further controls the display unit (380, 500) to display the vascular axial sectional image, and the control device further comprising a reception unit configured to receive the designation of a measurement range in the vascular axial section image which is based on the signal obtained by the first signal transceiver during or after the first driving, wherein the second signal transceiver performs the measurement within the designated measurement range during the second driving.