Cath lab is a specialized room for cardiovascular diagnostics and treatments using catheters and fluoroscopy. Learn about the common procedures, such as angiograms, angioplasty, ablation, and coiling, and the differences between single plane and biplane systems. These pages will (eventually) provide a comprehensive overview of the science and medicine involved in the Cath Lab . As with the rest of TSP, this section will range from basics to advanced practi… A Catheterization Lab is an examination room in a hospital or clinic with diagnostic imaging equipment used to visualize the arteries of the heart and the chambers of the heart and treat any stenosis or abnormality found. A catheterization laboratory , or cath lab , is a procedural hospital room where minimally invasive tests and procedures are performed to diagnose and treat cardiovascular disease.