How it Works

The TVC Imaging System^™ integrates the most advanced plaque characterization technology (near infrared spectroscopy, or NIRS) with IVUS, the most trusted intravascular imaging technology. The result is information that can enable quick and informed clinical decision-making and greater confidence in determining procedural and treatment strategies.

Rapid and Automated Vessel Characterization

In a single catheter pullback, the TVC Imaging System provides physicians with a high resolution IVUS image that clearly displays key structural parameters of the lesion, including its location, length, and degree of stenosis, in addition to confirming proper stent placement.


At the same time, the system performs spectroscopic analysis of optical data to produce a Chemogram™ map that indicates the location of lipid core plaques (LCP) of interest and quantifies their lipid core burden.

• On the Chemogram, LCPs are visualized as bright yellow and are co-registered with the grayscale IVUS image of the coronary artery.

Immediate Co-Registered Image for Real-Time Decision-Making

A co-registered image, called a TVC Composite™ Image, appears immediately on both the high-definition physician and operator monitors.


Integrating and co-registering the Chemogram with IVUS provides critical information to interventional cardiologists during the cardiac catheterization procedure. The result is outstanding vessel interpretation and assessment.

Dual-Modality TVC Insight^™ Catheter

Laser-based near-infrared spectroscopy (NIRS) and high fidelity 40MHz ultrasonics work in combination for the simultaneous acquisition of structural and compositional information – in a single pullback. Learn more about the TVC Insight.

See The TVC Imaging System