Annular CMUT arrays for side looking intravascular ultrasound imaging
Yükleniyor...
Dosyalar
Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Although side looking intravascular ultrasound (SL-IVUS) imaging systems using single element piezoelectric transducers set the resolution standard in the assessment of the extent of coronary artery disease, improvements in transducer performance are needed to perform harmonic imaging and high resolution imaging of vulnerable plaque. With their small channel count; annular arrays exploiting the inherent broad bandwidth of CMUTs and electronic focusing capability of integrated electronics provide a path for desired SL-IVUS imaging catheters. In this paper, we first describe the design, low temperature fabrication of an 8401 mu m diameter, 8 element CMUT annular array. Testing of the individual elements in oil shows a uniform device behavior with 100% fractional bandwidth around 20MHz without including the effects of attenuation and diffraction. We also present linear scan imaging results obtained on wire targets in oil, tissue and tissue mimicking phantoms using both unfocused and dynamically focused transducers. The results for axial and lateral resolution are in agreement predicted by the simulations and show the feasibility of this approach for high resolution SL-IVUS imaging.
Açıklama
This research is funded by NIH-NHLBI (Grant No: 1 R01 HL08281101) and Boston Scientific Corp. Support of Isik University through the internal grant BAP-05B301 is also acknowledged.; One of the authors, Jaime Zahorian, is grateful to the National Science Foundation for their support of this project through the Graduate Research Fellowship Program.
Anahtar Kelimeler
Acoustic waves, Acoustic imaging, Annular CMUT Array, Annular arrays, Bandwidth, Biomedical electronics, Biomedical transducers, Biomedical ultrasonics, Blood vessels, Broad bandwidths, Capacitive micromachined, Cardiovascular system, CMUT, Coronary arteriosclerosis, Coronary artery disease assessment, Coronary artery diseases, Design, Diseases, Electronic focusing capability, Fabrication, Focusing, Fractional bandwidths, Harmonic imaging, High resolutions, High-frequency ultrasound, High-resolution imaging, Image resolution, Image segmentation, Imaging systems, Integrated circuits, Integrated electronics, Intravascular ultrasound, Intravascular ultrasound imaging, IntraVascular ultrasounds, Lateral resolutions, Linear scans, Low temperatures, Medical imaging, Micromachined ultrasonic transducers, Optoelectronic devices, Petroleum, Phantoms, Piezoelectric transducers, Side looking intravascular ultrasound imaging, Single element piezoelectric transducer, Single elements, Size 840 mum, SL-IVUS imaging catheter, Small channels, Sonoluminescence, Telecommunication systems, Tissue mimicking phantom, Transducer, Transducers, Ultrasonic imaging, Ultrasonic transducer arrays, Ultrasonic transducers, Ultrasonic imaging, Ultrasonics, Vulnerable plaque, Vulnerable plaques
Kaynak
2007 IEEE Ultrasonics Symposium Proceedings, Vols 1-6
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
Sayı
Künye
Zahorian, J., Güldiken, R. O., Gürün, G., Qureshi, M. S., Balantekin, M., Değertekin, F. L. & Karaman, M. (2007). Annular CMUT arrays for side looking intravascular ultrasound imaging. Paper presented at the 84-87. doi:10.1109/ULTSYM.2007.34
