David A. Bluemke, MD, PhD, Editor of Radiology discusses three research articles from the August 2019 issue of Radiology. ARTICLES DISCUSSED –Summary of Primary Central Nervous System Lymphoma: Diagnostic Yield of Whole-Body CT and FDG PET/CT for Initial Systemic Imaging. Radiology 2019; 292:440–446. Summary of A Systematic Review of 639 Patients with Biopsy-confirmed Nephrogenic Systemic Fibrosis. Radiology 2019; 292:376–386. Summary of Iodine Maps from Subtraction CT or Dual-Energy CT to Detect Pulmonary Emboli with CT Angiography: A Multiple-Observer Study. Radiology 2019;292:197–205. Summary ofEvaluation of the Patient Request Process for Radiology Imaging in U.S. Hospitals. Radiology 2019; 292:409–413.