Abstract
A new real-time high frequency ultrasound scanner has been developed to easily image superficial structures and estimate blood flow, with several major improvements. A great limitation of previous high frequency systems has been the requirement to water-couple the mechanically-scanned transducer to the object to be imaged, and slowly scan the transducer using a fixed motion system. In this system, we have integrated a high-speed actuator used in conjunction with a low mass transducer enclosed in a hand-held scanhead, which allows direct placement on the eyelid or skin. The design of this system is optimized for high frame rates and clinical versatility. Implemented on this system are B-scan, M-mode, and swept-scan imaging modes, with velocity estimation in the latter two. A series of experiments were performed to characterize system performance. The system provides a frame rate of 10 fps, which is partially limited by the execution time of the software. Phantom images from the scanner have 8-bit resolution with a SNR in excess of 35 dB, providing sharp, high-resolution images. Using these results, a variety of experiments were performed on tissue and vessel phantoms to demonstrate the versatility of the scanner. The resulting B-scan, M-mode, and swept-scan structural and colorflow images will be presented.
Original language | English (US) |
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Title of host publication | Proceedings of the IEEE Ultrasonics Symposium |
Pages | 1465-1468 |
Number of pages | 4 |
Volume | 2 |
State | Published - 2001 |
Event | 2001 Ultrasonics Symposium - Atlanta, GA, United States Duration: Oct 6 2001 → Oct 10 2001 |
Other
Other | 2001 Ultrasonics Symposium |
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Country | United States |
City | Atlanta, GA |
Period | 10/6/01 → 10/10/01 |
ASJC Scopus subject areas
- Engineering(all)