• English
  • العربية
  • 中文
  • Français
  • Русский
  • Español

Operationalizing a Vision of Safe Imaging: The American College of Radiology Dose Index Registry

9 November 2021


Moderator: Jenia Vassileva (IAEA), Judy Burleson (ACR)

Presenter: William Sensakovic, Mythreyi Chatfield, Dustin Gress, Michael Simanowith

Organized jointly with the American College of Radiology



The American College of Radiology (ACR) will describe the genesis and evolution of its Dose Index Registry (DIR), which addressed the various needs that led to its inception and which continues to drive participation in the registry. Initial and ongoing challenges of design, structure, reporting and maintenance will be addressed during this webinar. It will also demonstrate the benefit of having such a registry (for end-users and the imaging community), helping regulators/health authorities/ professional bodies to have a better understanding of specific considerations to be evaluated in planning similar systems. Among the focused areas, will be how end-users can use a DIR system to benchmark their practice, but also what steps are to be implemented to participate in the registry.

Learning objectives

  • Understand the purpose that led to the development of DIR for computed tomography (CT)
  • Summarize premise/use of registry for quality improvement – what the DIR does and doesn’t do
  • Identify standardization and submission challenges
  • Explain performance feedback report elements
  • Describe use of the DIR data in meeting regulatory requirements
  • Describe various analyses and publications using the DIR data

William Sensakovic

William F. Sensakovic, Ph.D., is a board certified Diagnostic Medical Physicist by American Board of Radiology (ABR) and in Magnetic Resonance Safety Expert by American Board of the Magnetic Resonance Safety (ABMRS), with specialty interest in image formation and optimization, radiation dose and magnetic resonance safety, machine learning and data science, and education. Dr. Sensakovic chairs committees on education, image quality, dose, and safety for several organizations including The American Association of Physicists in Medicine (AAPM) and American College of Radiology (ACR). He also founded and runs Telerad Physics Teaching company which provides online radiological physics education services to medical professionals. He is author of more than 30 scientific articles, 90 conference presentations, and several books and book chapters.

Mythreyi Chatfield

Mythreyi Bhargavan Chatfield, Ph.D., is the Executive Vice President of Quality and Safety at the American College of Radiology (ACR) where she oversees the accreditation programmes, registries, Appropriateness Criteria, and other quality activities. Prior to May 2010, she was Director of Research at ACR, where she conducted research on socioeconomic topics of relevance to radiology, including monitoring trends in imaging utilization and costs, small-area variations in healthcare use, and racial and ethnic disparities in access to care.

Dustin Gress

Dustin Gress has both a bachelor’s and master’s degree in Nuclear Engineering and Radiological Sciences at University of Michigan. Gress then worked as a diagnostic physicist for over 7 years at Upstate Medical Physics, where he also served as Deputy Director of the first Commission on Accreditation of Medical Physics Education Programs (CAMPEP)-which is an accredited private practice residency programme in imaging physics. Gress then spent 6.5 years in the Department of Imaging Physics at MD Anderson Cancer Center, supporting NM, PET, IR, mammography, and CT. Gress also served as a Clinical Coordinator in MD Anderson’s Residency Program in Imaging Physics, and as an Instructor in its Medical Physics Graduate Program. Since May 2018, he has been Senior Advisor for Medical Physics at the ACR, providing internal medical physics expertise across departments and projects, including government relations, public relations, registries, accreditation, guidance, among others. Gress is a board certified expert in Diagnostic Radiologic Physics by American Board of Radiology (ABR), and in Physics and Instrumentation by American Board of Science in Nuclear Medicine (ABSNM) certified in Nuclear Medicine.

Michael Simanowith

Michael Simanowith joined the American College of Radiology (ACR) in 2019 as Director of Registries. He leads an analyst and support team primarily responsible for registry definition, data collection, metric reporting, and participant issue resolution for the quality improvement (QI) registries and associated pilot programs under the National Radiology Data Registries portfolio. Prior to ACR, Michael was Director of Registry Science at the American College of Cardiology for nine years where he oversaw the scientific development, implementation and public reporting for a suite of ten cardiovascular QI registries.

Stay in touch