Global Optical Coherence Tomography Market Assessment, By Type [Handheld OCT Devices, Catheter-based OCT Devices, Tabletop OCT Devices, Doppler OCT Devices], By Technology [Spatial Encoded Frequency Domain OCT, Time Domain OCT, Fourier Domain OCT, Frequency Domain OCT, Others], By Applications [Cardiovascular, Ophthalmology, Oncology, Dermatology, Others], By Region, Opportunities and Forecast, 2017-2031F