David A. Bluemke, MD, PhD, Editor of Radiology discusses five research articles from the May 2019 issue of Radiology. ARTICLES DISCUSSED – Summary of CT Angiography of the Aorta: Contrast Timing by Using a Fixed versus a Patient-specific Trigger Delay. Radiology 2019; 291:531–538. Summary of CT Characteristics and Pathologic Basis of Solitary Cystic Lung Cancer. Radiology 2019; 291:495–501. Summary of Neurodegeneration of the Substantia Nigra after Ipsilateral Infarct: MRI R2 Mapping and Relationship to Clinical Outcome. Radiology 2019; 291:438–448. Summary of Diagnostic Performance of 4D CT and Sestamibi SPECT/CT in Localizing Parathyroid Adenomas in Primary Hyperparathyroidism.Radiology 2019; 291:469–476. Summary of Effectiveness of Contrast-enhanced MR Angiography for Visualization of the Prostatic Artery prior to Prostatic Arterial Embolization.Radiology 2019; 291:370–378.