Built for RCES candidates and working EP lab technologists, this handbook connects cardiac anatomy to the decisions made under fluoroscopy, intracardiac echo, and 3D electroanatomic mapping. It follows the catheter from vascular access through right-sided, left atrial, ventricular, outflow, device-adjacent, congenital, and epicardial anatomy, showing how chamber structure, conduction tissue, substrate, and safety borders shape every procedural move. The core framework, the Fluoro–ICE–Map Correlation System, teaches one disciplined habit: accept a landmark only when projection, structure, map label, electrogram behavior, and adjacent-risk anatomy agree.
• Navigate access routes from femoral venous entry to transseptal, retrograde aortic, coronary venous, superior, and epicardial approaches — matching the route to the target before the case drifts.
• Translate right atrial landmarks such as the CTI, triangle of Koch, CS ostium, His region, and crista terminalis — supporting safer SVT, flutter, and septal workflows.
• Separate left atrial structures including PV antra, carinae, posterior wall, LAA ridge, mitral isthmus, and esophageal-adjacent zones — reducing anatomic confusion during AF and macroreentry cases.
• Interpret ventricular, papillary, fascicular, scar, RVOT, LVOT, cusp, and summit anatomy — distinguishing true targets from breakout, bystander signals, and hazard-limited sites.
• Recognize device leads, CS leads, baffles, closure devices, persistent LSVC, interrupted IVC, and post-surgical scar — rebuilding orientation when normal anatomy no longer applies.
• Use the Master Atlas to correlate fluoroscopic projections, ICE windows, 3D map tags, access routes, safety structures, and clinical spotlight regions at the point of care.
Add it to the EP lab reference shelf and build the spatial confidence every catheter-based procedure demands.