David A. Bluemke, MD, PhD, Editor of Radiology discusses four research articles from the September 2019 issue of Radiology. ARTICLES DISCUSSED –Summary of Safety Considerations of 7-T MRI in Clinical Practice. Radiology 2019; 292:509–518. Summary of Summary of Left Atrial Fibrosis Assessed with Cardiac MRI in Patients with Paroxysmal and Those with Persistent Atrial Fibrillation. Radiology 2019; 292:575–582. Summary of Summary of Kidney Injury after Intravenous versus Intra-arterial Contrast Agent in Patients Suspected of Having Coronary Artery Disease: A Randomized Trial. Radiology 2019; 292:664–672. Summary of Iodine-based Dual-Energy CT of Traumatic Hemorrhagic Contusions: Relationship to In-Hospital Mortality and Short-term Outcome. Radiology 2019; 292:730–738.