AJR Live Webinars feature leading experts discussing some of AJR’s most cutting-edge articles—broadcasted each month live, online, with CME.

Miss a broadcast? You can still watch past webinars and earn credit.

Past AJR Live Webinars

Upcoming Webinars

MRA for PE During Iodinated Contrast Media Shortage of 2022

March 20, 2024

Broadcasted Live and Online 12:00 noon–1:00 pm, Eastern Time 
Moderator: Jonathan Chung, MD
Speaker: Jitka Starekova, MD

During the iodinated contrast media shortage of 2022, preferred use of pulmonary MRA for pulmonary embolism (PE) diagnosis in the general population conserved (from April 1 to July 31) an estimated 27 L of iohexol (350 mg I/mL). During weeks 8–11, more MRA examinations (range, 45–63) than CTA examinations (range, 27–46) were performed. An institution’s switch from CTA to MRA as the preferred test for PE diagnosis helped to mitigate the impact of the 2022 iodinated contrast shortage.

Join Jitka Starekova, MD for a discussion of her AJR article, which shows how pulmonary MRA can be a practical substitute for pulmonary CTA in emergency settings.

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Learning Outcomes

  1. Learn a single institution’s experience in the use of pulmonary MRA as an alternative to CTA for the diagnosis of PE in the general population during the iodinated contrast media shortage in 2022..
  2. Discuss the future of MRA beyond typical aortic and cardiac imaging.
  3. Review barriers in adopting MRA.

MR and US Elastography for Fibrosis Assessment in Children

April 25, 2024

Broadcasted Live and Online 12:00 noon–1:00 pm, Eastern Time 
Moderator: Jonathan Dillman, MD, MSc
Speakers: Suraj Serai, PhD and Giovanna Ferraioli, MD

Quantitative MRI and ultrasound biomarkers of liver fibrosis have become important tools in the diagnosis and clinical management of children with chronic liver disease (CLD). In particular, MR elastography is now routinely performed in clinical practice to evaluate the liver for fibrosis. Ultrasound shear-wave elastography has also become widely performed for this purpose, due to its portability and lower equipment cost. These noninvasive methods are increasingly used to replace liver biopsy for the diagnosis, quantitative staging, and treatment monitoring of patients with CLD. Elastography assesses the stiffness of the liver that is directly and strongly related to liver fibrosis. However, there are several factors that may lead to an increase of liver stiffness independently from liver fibrosis, and these are confounding factors when stiffness is used as a biomarker of fibrosis. It must be noted that this unique behavior of stiffness could be an advantage rather than a limitation, particularly in the pediatric population in whom liver disease is often due to an intricate interplay of several factors.

Join Suraj Serai, PhD and Giovanna Ferraioli, MD for a discussion and review of their AJR article. They will present practical approaches for adapting and optimizing these methods in children, with consideration of clinical indications, patient preparation, equipment requirements, acquisition technique, as well as pitfalls and confounding factors. In addition, guidance is provided for interpretation and reporting, and representative case examples are presented.

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Learning Outcomes

  1. Discuss the value and the limitations of liver elastography for the assessment of liver diseases in children.
  2. Describe how these methods can be adapted and optimized in children, with consideration of clinical indications, patient preparation, equipment requirements, acquisition technique, as well as pitfalls and confounding factors.
  3. Guide the users in interpreting and reporting results.

The American Roentgen Ray Society (ARRS) is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education activities for physicians.

The ARRS designates this live activity for a maximum of 1.00 AMA PRA Category 1 Credit(s). Physicians should claim only the credit commensurate with the extent of their participation in the activity.