Characterization of Medical Ultrasound Devices With Hydrophones

Learning Objective(s)
After watching this activity, you should be able to:

- Discuss the importance of characterizing acoustic output transmitted by diagnostic and therapeutic transducers;

- Identify the advantages and disadvantages of different hydrophone designs (eg, membrane, needle, capsule, and fiber optic);

- Estimate the uncertainty of pressure measurements with hydrophones; and

- Identify straightforward signal processing methods to correct pressure measurements for common distortions due to the hydrophone.

Faculty: Keith Wear, PhD

Available Credit: 1 AMA PRA Category 1 Credit(s)™/1 ARRT Category A credit(s). Upon completion of the learning activity, you will have 1 attempt to successfully pass the post-test with a score of at least 80% and claim your certificate.

AIUM Member: $0
Nonmember: $69

Join the AIUM today to access and earn for free.

Your fee includes access to the content and the opportunity to submit the CME test. 

As of August 1, 2020, you will have 1 attempt to successfully pass the post-test with a score of at least 80% and claim your certificate.

Components visible upon registration.

Release Date: 10/21/2022
Expiration Date: 10/21/2025

AMA PRA Category 1 Credit(s)

The American Institute of Ultrasound in Medicine (AIUM) is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

The AIUM designates this internet activity enduring material for a maximum of 1 AMA PRA Category 1 Credit(s)™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

AIUM Ultrasound Practice Accreditation

This activity can be used to meet part of relevant AIUM Training Guidelines and/or maintenance credits for accreditation purposes. Learn more about AIUM Ultrasound Practice Accreditation here.

ARRT Category A Credit 

The AIUM is a Recognized Continuing Education Evaluation Mechanism (RCEEM) for the American Registry of Radiologic Technologists (ARRT). The AIUM is the owner and sponsor of this activity. This activity is approved by the AIUM for ARRT Category A credit. This CE activity may be available in multiple formats or from different CE sponsors. ARRT does not allow CE activities (e.g., Internet courses, home study programs, directed readings, live lectures) to be repeated for CE credit in the same CE biennium.

Additional Credit Information

  • American Registry for Diagnostic Medical Sonography (ARDMS). The ARDMS accepts AMA PRA Category 1 CME Credit(s)™.

Documenting CME Credits

All participants who pass the post-test have access to a CME certificate. The AIUM will submit credits to the ARDMS for active AIUM membership accounts with a valid ARDMS ID number. It is the participant’s responsibility to ensure credit accuracy and adherence to any audit requests.

Disclosure Policy

In accordance with the ACCME’s Standards for Integrity and Independence in Accredited Continuing Education, all individuals in control of content must disclose any financial relationship(s) or other relationship(s) held within the past 24 months. The AIUM implements a mechanism to identify and mitigate all conflicts of interest prior to delivering the educational activity to learners.

Disclosures for this Activity

  • Keith Wear, no relevant financial relationships to disclose
  • Ashley McDermott, no relevant financial relationships to disclose

Keith Wear, PhD (Moderator)

Food and Drug Administration

Keith Wear (BA Applied Physics, UC San Diego; MS, PhD Applied Physics, Stanford University) is a physicist with the US Food and Drug Administration. He is a Fellow of ASA, AIMBE, and the AIUM. He received the 2019 AIUM Joseph Holmes Basic Science Pioneer Award. He was Associate Editor-in-Chief (2019--2021) and Associate Editor (2002--2021) for IEEE Trans. Ultrason. Ferro. & Freq. Contr. He is Associate Editor for J. Acoust. Soc. Am. (2012--present). He has served as chair of the AIUM Technical Standards Committee (2014-2016), AIUM Bioeffects Committee (2021--2023), AIUM Basic Science and Instrumentation Community (2004--2006; 2014--2016), and AIUM Therapeutic Ultrasound Community (2013--2015). He is chair of the American Association of Physicists in Medicine Task Group 333 on Magnetic Resonance Guided Focused Ultrasound Quality Assurance. His research interests include hydrophone methodology, therapeutic ultrasound, photoacoustics, and quantitative ultrasound.