Evaluation of CMUT annular arrays for side-looking IVUS
Yükleniyor...
Dosyalar
Tarih
2009
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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.
Açıklama
Anahtar Kelimeler
Acoustooptical effects, Annular array, Annular arrays, Antenna phased arrays, Array signal processing, Array processing, Bandwidth, Cardio-vascular disease, Cardiovascular diseases, CMUT, Electronic-beam-forming, Experimental measurements, Focusing, Fractional bandwidths, High-frequency ultrasound, Imaging performance, Imaging systems, Intravascular ultrasound, IVUS imaging, Motion artifact, Optical transfer function, Parylene coatings, Phased arrays, Phased array processing, Piezoelectric transducers, Piezoelectricity, Point-Spread function, Probe configuration, Probes, Rotation, Side-looking, Signal processing, Solid state circuits, Sulfur compounds, Testing, Transducer elements, Transducers, Ultrasonic imaging, Ultrasonic transducers, Ultrasonics
Kaynak
Proceedings - IEEE Ultrasonics Symposium
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
Sayı
Künye
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
