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  • Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
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  •   DSpace@Işık
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  • Mühendislik Fakültesi / Faculty of Engineering
  • Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
  • MF - Bildiri Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
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Evaluation of CMUT annular arrays for side-looking IVUS

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Date

2009

Author

Şişman, Alper
Zahorian, Jaime S.
Gürün, Gökçe
Karaman, Mustafa
Balantekin, Müjdat
Değertekin, Fahrettin Levent
Hasler, Paul E.

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Citation

Şişman, A., Zahorian, J., Gürün, G., Karaman, M., Balantekin, M., Değertekin, F. L. & Hasler, P. (2009). Evaluation of CMUT annular arrays for side-looking IVUS. Paper presented at the 988-991. doi:10.1109/ULTSYM.2009.5441564

Abstract

Side-looking (SL) IVUS probes are extensively used for management of cardiovascular diseases. Currently SL-IVUS imaging probes use either a single rotating transducer element or solid-state arrays. Probes with single rotating piezoelectric transducer have simple front-end, but have fixed focused operation, and suffers from motion artifacts. Solid-state SL-IVUS imaging probes use piezoelectric transducer arrays and electronic beam-forming. Synthetic phased array processing of signals detected with small-sized elements in these arrays limits the SNR achievable with these probes. In this study, we explore a new SL-IVUS probe architecture employing rotating phased annular CMUT arrays. We tested and compared imaging performance of the existing and proposed probe configurations through simulated point spread functions. We also two fabricated sample annular array designs operating at 20-MHz and 50-MHz. Our experimental measurements on the 20-MHz array in oil shows 105% fractional bandwidth. The 50-MHz array with parylene coating shows approximately 40% fractional bandwidth measured in water. We also present imaging results acquired from wire-targets to test the experimental point-spread functions.

Source

Proceedings - IEEE Ultrasonics Symposium

URI

https://hdl.handle.net/11729/1976
https://dx.doi.org/10.1109/ULTSYM.2009.5441564

Collections

  • MF - Bildiri Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering [220]
  • Scopus İndeksli Bildiri Koleksiyonu [439]

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