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GET PARTS NOW!
Range of Parts Available
- Actuators
- Disc Benders
- Ultrasonic Transducers
- Discs, Rings and Plates
Experiments or Small Projects?
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PARTS ADDED EVERY MONTH
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Ultrasound Transducers for Medical Diagnostics
APPLICATION CHALLENGES
An obstacle to developing medical ultrasound transducers is the large acoustic impedance mismatch between the piezoelectric ceramic signal-producing element and the human tissue or water load through which the signal is transmitted. If this mismatch is not compensated for, most of the acoustical energy generated by the ceramic element will be reflected back and forth between the rear face and the front face of the element. In this unmodified system the pulse transmitted into the tissue will be long, and axial resolution will be poor.
A common response to this problem, based (see picture), has been to apply an acoustically matched backing material to the rear face of the ceramic. This approach shortens the pulse into the tissue and thus improves resolution, but sacrifices sensitivity. A better solution to the acoustic impedance mismatch is to apply a minimal backing to the ceramic element and incorporate an acoustically matching layer at the front face of the element. This combination ensures both a suitably short pulse and useable sensitivity. More than one matching layer can be applied to the front face, and the layers can exhibit various combinations of acoustic impedance and thickness. A lens in front of the entire assembly will focus the ultrasonic signal at a specified distance.
Ultrasonic Industry Association News
Beyond Diagnostics!
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Echo Sounding Device |
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UPCOMING EVENTS
4th International Congress on Ceramics (ICC4)
When: July 15-19, 2012
Where: Sheraton Chicago Hotel & Towers, IL, USA
Event Info:
This is a global event designed to foster discussion and planning concerning issues facing the global ceramic and glass communities as well as gain insights into future technological and business trends. There will be opportunities to network with ceramic and glass industry leaders and professionals, presentations by forward-looking business and R&D leaders and workshops to expand your knowledge of new scientific developments in key application areas.
Learn more about the event!
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Annual IEEE Ultrasonics Symposium 2012
When: October 7-10, 2012
Where: International Congress Center, Dresden, Germany
Event Info:
The conference is a forum for the presentation and communication of new ideas, challenges,
and detailed work results in the rich field of ultrasonics. Academic and commercial participants are involved. All facets are represented such
as physical acoustics, medical ultrasound, nondestructive testing, micro-acoustics, sensors and actuators, new materials, functional principles, and technologies.
Additional Event Information Here
Call for Papers, Poster Exhibition and Technical Program
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3rd International Symposium: MR-guided Focused Ultrasound 2012
When: October 14-17, 2012
Where: Washington, DC Metro Area, USA
Event Info:
Targeted to scientists, clinicians and others interested in current and future applications of MR-guided focused ultrasound, the conference will offer a multifaceted exploration of this emerging field and feature plenary sessions, panel discussions, poster presentations and technical exhibits.
Symposium topics include:
- MR-guided focused ultrasound technology
- Brain, Prostate, Breast and Liver applications
- Back and neck pain, other applications
- Bone tumors & Uterine fibroids
- Focused ultrasound-mediated drug delivery
- Late-breaking Research
- Accelerating Development & Adoption
Additional Event Information Here
Focused Ultrasound Surgery Foundation
Resources From the 2010 Symposium
Other Related Conferences |
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