Report summary

Northwestern University Department of Radiology in 2015-2026 reads as a 83-PI network with 426 internal PI collaborations. The dominant subject mix is Medicine as the leading field (64% of slots across 79 PIs; 79 labels), Radiology, Nuclear Medicine and Imaging as the leading subfield (13% of slots across 27 PIs; 27 labels), and Advanced MRI Techniques and Applications as the leading topic (4% of slots across 11 PIs; 11 labels). That is promising: collaboration is not just one large hairball, and the leading breakdown groups cover 22 PIs across distinct clusters. The leading PI names are Sadiya S. Khan (109.8 weighted works; Heart Failure Treatment and Management, Cardiovascular Function and Risk Factors). The most visible ties are Riad Salem and Robert J. Lewandowski (145 shared works, weight 57.3); Michael Markl and James Carr (138 shared works, weight 53). The leading breakdown groups are group 1 with 9 PIs, 15 internal connections, weight 251, around Cardiology and Cardiovascular Medicine, Radiology, Nuclear Medicine and Imaging, Pulmonary and Respiratory Medicine, led by Michael Markl, Bradley D. Allen, James Carr; group 2 with 8 PIs, 11 internal connections, weight 236.5, around Hepatology, Surgery, Epidemiology, led by Riad Salem, Robert J. Lewandowski, Kush Desai.