Focused high frequency ultrasonic transducers for minimally invasive imaging

被引：5

作者：

Fleischman, A ^{[1
]}

Modi, R ^{[1
]}

Nair, A ^{[1
]}

Lock-Wood, G ^{[1
]}

Roy, S ^{[1
]}

机构：

[1] Cleveland Clin Fdn, Dept Biomed Engn, Cleveland, OH 44195 USA

来源：

FIFTEENTH IEEE INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS, TECHNICAL DIGEST | 2002年

关键词：

D O I：

10.1109/MEMSYS.2002.984262

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Spherically focused, high frequency (30-50 MHz) ultrasonic imaging transducers are fabricated by using a piezoelectric polymer film and membrane deflection technique that is compatible with CMOS circuit fabrication. Micromachined ultrasonic transducers with 0.5-2.0 mm-diameter apertures and f-numbers ranging from 1.3-4.0 are fabricated and characterized. The transducers exhibit focused radiation patterns with 50 mum axial resolution and bandwidths of 80-100% around center frequency values. Tissue imaging capabilities of the micromachined ultrasonic transducers are demonstrated through successful imaging of human cadaveric aorta.

引用

页码：300 / 303

页数：4

共 10 条

[1] A P(VDF-TRFE)-BASED INTEGRATED ULTRASONIC TRANSDUCER [J].

FIORILLO, AS ;

VANDERSPIEGEL, J ;

BLOOMFIELD, PE ;

ESMAILZANDI, D .

SENSORS AND ACTUATORS A-PHYSICAL, 1990, 22 (1-3) :719-725

[2] A history of medical and biological imaging with polyvinylidene fluoride (PVDF) transducers [J].

Foster, FS ;

Harasiewicz, EA ;

Sherar, MD .

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 2000, 47 (06) :1363-1371

[3]

HAN CH, 1999, 12 IEEE INT C MEMS M

[4] Beyond 30 MHz - Applications of high-frequency ultrasound imaging [J].

Lockwood, GR ;

Turnbull, DH ;

Christopher, DA ;

Foster, FS .

IEEE ENGINEERING IN MEDICINE AND BIOLOGY MAGAZINE, 1996, 15 (06) :60-71

[5]

LOCKWOOD GR, 1998, 1998 SPIE INT S MED

[6]

MO J, 1990, IEEE T ELECT DEVICES, V37

[7] Assessing spectral algorithms to predict atherosclerotic plaque composition with normalized and raw intravascular ultrasound data [J].

Nair, A ;

Kuban, BD ;

Obuchowski, N ;

Vince, DG .

ULTRASOUND IN MEDICINE AND BIOLOGY, 2001, 27 (10) :1319-1331

[8] Intravascular ultrasound - Novel pathophysiological insights and current clinical applications [J].

Nissen, SE ;

Yock, P .

CIRCULATION, 2001, 103 (04) :604-616

[9]

PAN JY, 1991, ELECT ENG

[10] INTEGRATED SILICON-PVF2 ACOUSTIC TRANSDUCER ARRAYS [J].

SWARTZ, RG ;

PLUMMER, JD .

IEEE TRANSACTIONS ON ELECTRON DEVICES, 1979, 26 (12) :1921-1931

← 1 →