Report summary

For University of Pittsburgh Department of Cardiothoracic Surgery in 2015-2026, the graph shows 34 visible PIs and 103 internal PI collaborations. The main research signal is Medicine as the leading field (64% of slots across 34 PIs; 34 labels), Pulmonary and Respiratory Medicine as the leading subfield (20% of slots across 17 PIs; 17 labels), and Cardiac Valve Diseases and Treatments as the leading topic (7% of slots across 7 PIs; 7 labels). That is a healthy pattern, with enough links to reveal several interpretable groups rather than one undifferentiated component. The most prominent PIs by weighted works are Ibrahim Sultan (128.1 weighted works; Aortic Disease and Treatment Approaches, Cardiac Valve Diseases and Treatments). The clearest collaboration lines are Ibrahim Sultan and Arman Kilic (74 shared works, weight 42); Ibrahim Sultan and Thomas G. Gleason (57 shared works, weight 32.7). The strongest breakdown groups are group 1 with 9 PIs, 12 internal connections, weight 178.8, around Cardiology and Cardiovascular Medicine, Pulmonary and Respiratory Medicine, Surgery, led by Ibrahim Sultan, Michel Pompeu Sá, Thomas G. Gleason.