Current status of hybrid intravascular ultrasound and optical coherence tomography catheter for coronary imaging and percutaneous coronary intervention

•Limitations of single use of intravascular ultrasound (IVUS) or optical coherence tomography (OCT) for evaluation of coronary artery disease.•Usefulness and limitations of sequential use of IVUS or OCT.•Advances in hybrid IVUS-OCT imaging devices.•Clinical application and usefulness of hybrid IVUS-OCT imaging devices.