Cardiac MRI,   Comparison of Original and 2018 Lake Louise Criteria for Diagnosis of Acute Myocarditis: Results of a Validation Cohort   The 2018 Lake Louise criteria provide a high diagnostic accuracy for the diagnosis of acute myocarditis and significantly increase the sensitivity compared with the original score.     Julian A. Luetkens, Anton Faron... Daniel Thomas

Commentary   Original versus 2018 Lake Louise Criteria for Acute Myocarditis Diagnosis: Old versus New Matthias Gutberlet, Christian Lücke

Cardiac MRI   Patient Orientation Affects Lead-Tip Heating of Cardiac Active Implantable Medical Devices during MRI   Radiofrequency-induced lead-tip heating for left-sided cardiac devices can be reduced by changing from a supine head-first to a supine feet-first patient orientation.     Jessica A. Martinez, Peter Serano, Daniel B. Ennis

Commentary   Can a Simple Flip Make a Difference in MRI Safety in Patients with Cardiac Implantable Electronic Devices? Harold I. Litt

Cardiac MRI   Complete Free-breathing Adenosine Stress Cardiac MRI Using Compressed Sensing and Motion Correction: Comparison of Functional Parameters, Perfusion, and Late Enhancement with the Standard Breath-holding Examination   Free-breathing stress cardiac MRI delivers diagnostic image quality.     Christoph Treutlein, Marco Wiesmüller... Wolfgang Wuest

Cardiac CT   Inter- and Intraoperator Variability in Measurement of On-Site CT-derived Fractional Flow Reserve Based on Structural and Fluid Analysis: A Comprehensive Analysis   Good reproducibility of CT-derived fractional flow reserve values calculated on-site on the basis of structural and fluid analysis was observed among operators of varying expertise, with potentially less variability in measurements after face-to-face training sessions.     Kanako K. Kumamaru, Erin Angel... Ciprian N. Ionita

Pulmonary Imaging   Visceral Pleural Invasion in Pulmonary Adenocarcinoma: Differences in CT Patterns between Solid and Subsolid Cancers   When evaluating adenocarcinomas preoperatively for the likelihood of visceral pleural invasion (VPI), the solid or subsolid nodule presentation at CT is important, as the frequency of VPI is significantly higher in solid than in subsolid nodules, and CT features associated with VPI differ between solid and subsolid nodules.     Benedikt H. Heidinger, Ursula Schwarz-Nemec... Alexander A. Bankier

Commentary   Pleural Invasion in Subsolid and Solid Lung Cancers: Predictive Features at CT and Their Clinical Significance Brett M. Elicker

Technical Developments

Cardiac CT   Performance of Dynamic Automated CT Annular Measurements Compared with Standard Manual Measurements for Transcatheter Aortic Valve Replacement Sizing   Dynamic automated CT software can provide annular measurements of all available cardiac phases in a time-efficient way.    Quynh A. Truong, Alan C. Legasto... Jackie Szymonifka

Reviews

Vascular Imaging   Bioprosthetic Heart Valve Degeneration and Dysfunction: Focus on Mechanisms and Multidisciplinary Imaging Considerations   Valve dysfunction and degeneration remain fundamental problems of bioprosthetic heart valves; key processes involved in dysfunction and degeneration and associated imaging findings are reviewed.     Stephanie L. Sellers, Philipp Blanke, Jonathon A. Leipsic

Cardiac MRI Gadolinium Deposition and Retention in the Brain: Should We Be Concerned? Robert E. Lenkinski

Case Report

Cardiac CT Coronary Artery Involvement in Segmental Arterial Mediolysis: A Case Report   Clinicians should be aware of the possibility of coronary artery involvement with segmental arterial mediolysis.    Michael A. Winkler, Harit Kapoor... Mary Sheppard