Roadmap Fusion Imaging in Percutaneous Coronary Intervention Reduces Contrast Medium Exposure Irrespective of Investigator's Experience Level

Objectives. Dynamic Coronary Roadmap (DCR) is a software tool that creates a real-time dynamic coronary artery overlay on fluoroscopic images. The efficacy of DCR in significantly reducing contrast medium use during percutaneous coronary interventions (PCI) has previously been shown. In this study, we aimed to determine if DCR is equally effective irrespective of the performing investigator's experience level. Methods. In this sub -analysis of a monocentric, open -label, randomized trial, 130 patients with hemodynamic relevant coronary type A and B lesions were randomized and contrast medium use was conducted with (+) or without (-) DCR software. PCI was randomly allocated and performed by an investigator with high (A) or medium (B) experience level. Results. Overall, contrast medium use was significantly reduced by both investigators in the +DCR group, and Investigator B used significantly less contrast medium with the software than Investigator A. The DCR software was not accompanied by increased radiation exposure for the patients or the teams. On the contrary, dose area product was reduced by both investigators, but was significantly reduced by the highly experienced investigator when using DCR. Fluoroscopy time was not different between investigators. Procedural success was 100%. Serious in -hospital adverse events were not observed. One of Investigator A's patients suffered from post -procedural acute kidney injury in the -DCR group. Conclusions. DCR significantly reduces contrast medium use during PCI irrespective of investigator's experience level.