Jeffrey S. Klein, MD, Editor of RadioGraphics, discusses 6 articles from the October Monograph 2018 issue of RadioGraphics. ARTICLES DISCUSSED: Esssential Role of a Medical Physicist in the Radiology Department., RadioGraphics 2018; 38:1665-1671; Lessons on Leadership., RadioGraphics 2018; 38:1688-1693; Contemporary Risk Management for Radiologists, RadioGraphics 2018; 38:1717-1728; Optimizing Performance by Preventing Disruptive Behavior in Radiology, RadioGraphics 2018; 38:1639-1650; The Late-Career Radiologist: Options and Opportunities, RadioGraphics 2018; 38:1617–1625; Fundamentals of Diagnostic Error in Imaging, RadioGraphics 2018; 38:1845-1865.