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High-Frequency Ultrasonic Transducers and Arrays

  • K. Kirk Shung
  • Jonathan M. Cannata
  • Qifa Zhou

Ultrasonic imaging is one of the most important and still growing diagnostic tools today. Ultrasound is more appealing as a clinical imaging modality compared with such modalities as magnetic resonance imaging (MRI), nuclear imaging, and x-ray computed tomography (CT) in that it is more cost-effective, noninvasive, capable of real-time operation, and portable while providing images of comparable quality and resolution. State-of-the-art ultrasonic scanners offer real-time gray scale images of anatomical detail with millimeter spatial resolution, which are superimposed on a map of Doppler blood flow, displaying the information in color thereby (Shung 2006). Clinical applications of these devices are still expanding, and the operating frequencies of these devices seem to inch higher and higher. High-frequency (HF) imaging (higher than 20MHz) yields improved spatial resolution at the expense of a shallower depth of penetration. There are a number of clinical problems that may benefit from high-frequency ultrasonic imaging (Lockwood et al. 1996). Intravascular imaging with probes mounted on catheter tips at frequencies higher than 20MHz with the highest frequency being 60MHz has been used to characterize atherosclerotic plaque and to guide stent placement and angioplasty procedures (Saijo and van der Steen 2003). Endoscopic imaging with probes mounted on the tip of an endoscope or a catheter at frequencies from 10 to 20MHz has been proven clinically beneficial in diagnosing esophageal, gastrointestinal, and urinary lesions (Liu and Goldberg 1995). Medical efficacy of ultrasonic imaging of anterior segments of the eye at frequencies higher than 50MHz in diagnosing glaucoma and ocular tumors and in assisting refractive surgery has been demonstrated (Pavlin and Foster 1995). The availability of a noninvasive imaging tool for dermatological applications could reduce the number of biopsies that are associated with patient discomfort and could better demarcate tumor involvement. An additional benefit is that the results are known immediately or shortly after the examination unlike biopsy where a substantial time lag is likely to occur between the examination time and the report of histological analysis. Small-animal imaging is another frontier of HF ultrasound. Small-animal imaging is of intense interest recently because of the utilization of small animals in drug and gene therapy research.MicroMR, microCT, and microPET have all been developed to meet this need. Ultrasound thus far has only played a very limited role.

Keywords

Catheter Magnesium Chrome Attenuation Mold 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Bouma BE, Tearney GJ (2002) Handbook of optical coherent tomography. Marcel Dekker, New York.Google Scholar
  2. Brown LF (2000) Design considerations for piezoelectric polymer ultrasound transducers. IEEE Trans Ultrason Ferroelectr Freq Contr 47: 1377-1396.CrossRefGoogle Scholar
  3. Brown JA, Demore CEM, Lockwood GR (2004) Design and fabrication of annular arrays for high frequency ultrasound. IEEE Trans Ultrason Ferroelectr Freq Contr 51: 1010-1017.CrossRefGoogle Scholar
  4. Brown JA, Foster FS, Needles A, Lockwood GR (2006) A 40 MHz linear array based on a 1-3 composite with geometric elevational focusing. 2006 IEEE Ultrason Symp Proc, Vancouver, BC, pp 256-260.Google Scholar
  5. Cannata JM, Ritter TA, Chen WH, Silverman RH, Shung KK (2003) Design of efficient, broadband single-element (20-80 MHz) ultrasonic transducers for medical imaging application. IEEE Trans Ultrason Ferroelectr Freq Contr 50: 1548-1557.CrossRefGoogle Scholar
  6. Cannata JM, Williams JA, Zhou QF, Ritter TA, Shung KK (2005) Development of a 35 MHz piezo-composite ultrasound array for medical imaging. IEEE Trans Ultrason Ferroelectr Freq Contr 52: 224-236.Google Scholar
  7. Demore CEM, Brown JA (2006) Investigation of cross-talk in kerfless annular array for high frequency imaging. IEEE Trans Ultrason Ferroelectr Freq Contr 53: 1046-1056.CrossRefGoogle Scholar
  8. Gottlieb EJ, Cannata JM, Hu CH, Shung KK (2006) Development of a high frequency (>50 MHz) copolymer annular array ultrasound transducer. IEEE Trans Ultrason Ferroelectr Freq Contr 53: 1037-1045.CrossRefGoogle Scholar
  9. Foster FS, Pavlin CJ, Harasiewicz KA, Christopher DA, Turnbull DH (2000) Advances in ultra-sound biomicroscopy. Ultrasound Med Biol 26: 1-27.CrossRefGoogle Scholar
  10. Han P, Yan W, Tian J, Huang X, Pan H (2005) Cut directions for the optimization of piezoelectric coefficients of lead magnesium niobate-lead titanate ferroelectric crystals. Appl Phys Lett 86: 052902-1-3.Google Scholar
  11. Jensen J (1996) Field: A program for simulating ultrasound systems. Med Biol Eng Comput 34: 351-353.CrossRefGoogle Scholar
  12. Ketterling JA, Aristizabal O, Turnbull DH, Lizzi FL (2005) Design and fabrication of a 40 MHz annular array transducer. IEEE Trans Ultrason Ferroelectr Freq Contr 52: 672-681.CrossRefGoogle Scholar
  13. Kino GS (1987) Acoustic waves: Devices, imaging, and analog signal processing. Prentice Hall, Upper Saddle River, NJ.Google Scholar
  14. Liu B, Goldberg B (1995) Endoluminal vascular and nonvascular sonography: Past, present and future. Am J Roent 165: 765-775.Google Scholar
  15. Lockwood GR, Turnbull DH, Christopher DA, Foster FS (1996) Beyond 30 MHz: Application of high frequency ultrasound imaging. Eng Med Biol Mag 15: 60-71.Google Scholar
  16. Lukacs M, Yin J, Pang G, Garcia R, Cherin E, Williams R, Foster FS (2005) Performance and characterization of high frequency linear arrays. 2005 IEEE Ultrason Symp Proc, Rotterdam, The Netherlands, pp 105-109.Google Scholar
  17. Michau S, Maucharmp P, Dufait R (2004) Piezocomposite 30 MHz linear array for medical imag-ing: Design challenges and performances evaluation of 128 element array. 2004 IEEE Ultrason Symp Proc, Montreal, Canada, pp 898-902.Google Scholar
  18. Oakley CG, Zipparo MJ (2000) Single crystal piezoelectrics: A revolutionary development for transducers. 2000 IEEE Ultrason Symp Proc, Puerto Rico, pp 1157-1167.Google Scholar
  19. Oralkan O, Hansen ST, Bayram B, Ergan S, Khuri-Yacob BT (2004) High-frequency CMUT ar-rays for high resolution medical imaging. 2004 IEEE Ultrason Symp Proc, Montreal, Canada, pp 399-402.Google Scholar
  20. Pavlin CJ, Foster FS (1995) Ultrasound biomicroscopy of the eye. Springer-Verlag, New York.Google Scholar
  21. Ritter TA, Shrout TR, Tutwiler R, Shung KK (2002) A 30-MHz composite ultrasound array for medical imaging applications. IEEE Trans Ultrason Ferroelectr Freq Contr 49: 217-230.CrossRefGoogle Scholar
  22. Saijo Y, van der Steen AFW (2003) Vascular ultrasound. Springer, Tokyo. Google Scholar
  23. Sherar MD, Foster FS (1989) The design and fabrication of high frequency poly(vinylidene fluo-ride) transducers. Ultrason Imaging 11: 75-94.CrossRefGoogle Scholar
  24. Shung KK (2006) Diagnostic ultrasound: Imaging and blood flow measurements. CRC Press, Boca Raton, FL.Google Scholar
  25. Shung KK, Zipparo MJ (1996) Ultrasonic transducers and arrays. IEEE Eng Med Biol 15: 20-30.CrossRefGoogle Scholar
  26. Snook KA, Zhao JZ, Alves CH, Cannata JM, Chen WH, Meyer RJ Jr, Ritter TA, Shung KK (2002) Design, fabrication, and evaluation of high frequency, single-element transducers incorporating different materials. IEEE Trans Ultrason Ferroelectr Freq Contr 49: 169-176.CrossRefGoogle Scholar
  27. Snook KA, Shrout TR, Hu CH, Shung KK (2006) Development of a high frequency annular ar-ray imaging system. I. Annular array design. IEEE Trans Ultrason Ferroelectr Freq Contr 53: 300-308.CrossRefGoogle Scholar
  28. Yeh DT, Oralkan O, Wygant IO, Wong JH, Khuri-Yakub BT (2005) High resolution imaging with high frequency 1-D linear CMUT arrays. 2005 IEEE Ultras Symp Proc, Rotterdam, The Nether-lands, pp 665-669.Google Scholar
  29. Zhang QQ, Djuth FT, Zhou QF, Hu CH, Cha JH, Shung KK (2006) High frequency broadband PZT thick film ultrasonic transducers for medical imaging applications. Ultrasonics 44: e711-e715.Google Scholar
  30. Zhou QF, Cannata JM, Meyer RJ, Van Tol JD, Hughes WJ, Shung KK, Trolier-McKinstry S (2005) Fabrication and characterization of micro tonpilz high frequency transducer derived by PZT thick films. IEEE Trans Ultrason Ferroelectr Freq Cont 52: 350-357.CrossRefGoogle Scholar
  31. Zhou QF, Xu X, Gottlieb E, Sun L, Cannata JM, Ameri H, Humayun M, Han PD, Shung KK (2007) PMN-PT single crystal high frequency ultrasonic needle transducers for pulsed wave Doppler application. IEEE Trans Ultrason Ferroelectr Freq Contr 54: 668-675.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • K. Kirk Shung
    • 1
  • Jonathan M. Cannata
    • 1
  • Qifa Zhou
    • 1
  1. 1.NIH Resource on Medical Ultrasonic Transducer Technology Department of Biomedical EngineeringUniversity of Southern CaliforniaLos AngelesUSA

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