Omer Oralkan

Summary

Affiliation: Stanford University
Country: USA

Publications

  1. ncbi request reprint Finite element modeling and experimental characterization of crosstalk in 1-D CMUT arrays
    Baris Bayram
    Edward L Ginzton Laboratory, Stanford University, CA 94305, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 54:418-30. 2007
  2. ncbi request reprint Capacitive micromachined ultrasonic transducers: next-generation arrays for acoustic imaging?
    Omer Oralkan
    Edward L Ginzton Laboratory, and Center for Integrated Systems, Stanford University, Stanford, CA 94305 4070, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 49:1596-610. 2002
  3. ncbi request reprint Volumetric ultrasound imaging using 2-D CMUT arrays
    Omer Oralkan
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305 4088, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 50:1581-94. 2003
  4. ncbi request reprint Experimental characterization of collapse-mode CMUT operation
    Omer Oralkan
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305 4088, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 53:1513-23. 2006
  5. ncbi request reprint Dynamic analysis of capacitive micromachined ultrasonic transducers
    Baris Bayram
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305 4088, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 52:2270-5. 2005
  6. doi request reprint Integration of 2D CMUT arrays with front-end electronics for volumetric ultrasound imaging
    Ira O Wygant
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 55:327-42. 2008
  7. pmc Volumetric real-time imaging using a CMUT ring array
    Jung Woo Choe
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 59:1201-11. 2012
  8. doi request reprint An integrated circuit with transmit beamforming flip-chip bonded to a 2-D CMUT array for 3-D ultrasound imaging
    Ira O Wygant
    Edward L Ginzton Lab, Stanford Univ, Stanford, CA, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 56:2145-56. 2009
  9. ncbi request reprint Coherent array imaging using phased subarrays. Part II: simulations and experimental results
    Jeremy A Johnson
    Stanford University, Edward L Ginzton Laboratory, Stanford, CA, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 52:51-64. 2005
  10. pmc Forward-looking intracardiac ultrasound imaging using a 1-D CMUT array integrated with custom front-end electronics
    Amin Nikoozadeh
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 55:2651-60. 2008

Collaborators

Detail Information

Publications21

  1. ncbi request reprint Finite element modeling and experimental characterization of crosstalk in 1-D CMUT arrays
    Baris Bayram
    Edward L Ginzton Laboratory, Stanford University, CA 94305, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 54:418-30. 2007
    ..Lamb wave modes, A0 and S0, were also observed with crosstalk levels of -40 dB and -65 dB, respectively. We observed excellent agreement between the finite element and the experimental results...
  2. ncbi request reprint Capacitive micromachined ultrasonic transducers: next-generation arrays for acoustic imaging?
    Omer Oralkan
    Edward L Ginzton Laboratory, and Center for Integrated Systems, Stanford University, Stanford, CA 94305 4070, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 49:1596-610. 2002
    ..A tail also was observed in the point spread function (PSF) in the axial direction, indicating the existence of crosstalk. The relative amplitude of this tail with respect to the mainlobe was less than -20 dB...
  3. ncbi request reprint Volumetric ultrasound imaging using 2-D CMUT arrays
    Omer Oralkan
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305 4088, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 50:1581-94. 2003
    ....
  4. ncbi request reprint Experimental characterization of collapse-mode CMUT operation
    Omer Oralkan
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305 4088, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 53:1513-23. 2006
    ..In collapse mode, a 25-ns, 25-V unipolar pulse generates 590 kPa pressure at the surface of the transducer...
  5. ncbi request reprint Dynamic analysis of capacitive micromachined ultrasonic transducers
    Baris Bayram
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305 4088, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 52:2270-5. 2005
    ..Thus, the model is useful for designing cMUTs that operate in regimes where membranes make contact with the substrate...
  6. doi request reprint Integration of 2D CMUT arrays with front-end electronics for volumetric ultrasound imaging
    Ira O Wygant
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 55:327-42. 2008
    ....
  7. pmc Volumetric real-time imaging using a CMUT ring array
    Jung Woo Choe
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 59:1201-11. 2012
    ....
  8. doi request reprint An integrated circuit with transmit beamforming flip-chip bonded to a 2-D CMUT array for 3-D ultrasound imaging
    Ira O Wygant
    Edward L Ginzton Lab, Stanford Univ, Stanford, CA, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 56:2145-56. 2009
    ..We present 2-D and 3-D images of a wire phantom and 2-D orthogonal cross-sectional images (Bscans) of a latex heart phantom...
  9. ncbi request reprint Coherent array imaging using phased subarrays. Part II: simulations and experimental results
    Jeremy A Johnson
    Stanford University, Edward L Ginzton Laboratory, Stanford, CA, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 52:51-64. 2005
    ..The simulated and experimental test results presented in this paper validate theoretical expectations and illustrate the flexibility of PSA imaging as a way to exchange SNR and frame rate for simplified front-end hardware...
  10. pmc Forward-looking intracardiac ultrasound imaging using a 1-D CMUT array integrated with custom front-end electronics
    Amin Nikoozadeh
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 55:2651-60. 2008
    ..2 MHz with a 96% fractional bandwidth. Finally, we demonstrate the imaging capability of the integrated device on commercial phantoms and on a beating ex vivo rabbit heart (Langendorff model) using a commercial ultrasound imaging system...
  11. doi request reprint Wafer-bonded 2-D CMUT arrays incorporating through-wafer trench-isolated interconnects with a supporting frame
    Xuefeng Zhuang
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 56:182-92. 2009
    ..This study shows that through-wafer trench-isolation with a supporting frame is a viable solution for providing electrical interconnects to CMUT elements and that 2-D arrays fabricated using waferbonding deliver good performance...
  12. ncbi request reprint Capacitive micromachined ultrasonic transducers: fabrication technology
    Arif Sanli Ergun
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305 4088, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 52:2242-58. 2005
    ..Because the number of steps and consequent process time were reduced (from six-mask process to four-mask process), turn-around time was improved significantly...
  13. ncbi request reprint 3-D ultrasound imaging using a forward-looking CMUT ring array for intravascular/intracardiac applications
    David T Yeh
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 53:1202-11. 2006
    ..Rendered three-dimensional (3-D) images of a Palmaz-Schatz stent also are shown, demonstrating that the imaging quality is sufficient for practical applications...
  14. doi request reprint Photoacoustic imaging of the bladder: a pilot study
    Aya Kamaya
    Department of Radiology, Stanford University Medical Center, 300 Pasteur Dr, Stanford, CA 94305, USA
    J Ultrasound Med 32:1245-50. 2013
    ..Photoacoustic imaging may be complementary to diagnostic information obtained by cystoscopy and urine cytologic analysis and could potentially obviate the need for biopsy in some tumors before definitive treatment...
  15. doi request reprint Three-dimensional photoacoustic imaging using a two-dimensional CMUT array
    Srikant Vaithilingam
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 56:2411-9. 2009
    ..A CMUT based photoacoustic system is proposed as a viable alternative to a piezoelectric transducer based photoacoustic systems...
  16. pmc GPU-based real-time volumetric ultrasound image reconstruction for a ring array
    Jung Woo Choe
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305, USA
    IEEE Trans Med Imaging 32:1258-64. 2013
    ..This paper describes the image reconstruction procedure on the GPU platform and presents the experimental images obtained using this software. ..
  17. pmc Deep tissue photoacoustic imaging using a miniaturized 2-D capacitive micromachined ultrasonic transducer array
    Sri Rajasekhar Kothapalli
    Department of Radiology and Bio X Program, Stanford University, Palo Alto, CA 94035, USA
    IEEE Trans Biomed Eng 59:1199-204. 2012
    ..Results demonstrate that CMUTs with integrated front-end amplifier circuits are an attractive choice for achieving relatively high depth sensitivity for PAI...
  18. pmc Integration of Trench-Isolated Through-Wafer Interconnects with 2D Capacitive Micromachined Ultrasonic Transducer Arrays
    Xuefeng Zhuang
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305 Email
    Sens Actuators A Phys 138:221-229. 2007
    ..Design, fabrication process and characterization results are presented. The advantages when compared to other through-wafer interconnect techniques are discussed...
  19. ncbi request reprint Capacitive micromachined ultrasonic transducer design for high power transmission
    Baris Bayram
    Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305 4088, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 52:326-39. 2005
    ..The cMUT generated 0.47 MPa (6 kPa/V) and 1.04 MPa (11 kPa/V) in the conventional and collapse-snapback operations, respectively. Therefore, collapse-snapback operation of the cMUTs was superior for high-power transmission...
  20. pmc Miniaturized ultrasound imaging probes enabled by CMUT arrays with integrated frontend electronic circuits
    B T Khuri-Yakub
    E L Ginzton Laboratory, Stanford University, CA 94305, USA
    Conf Proc IEEE Eng Med Biol Soc 2010:5987-90. 2010
    ..This paper presents examples of miniaturized CMUT probes utilizing 1D, 2D, and ring arrays with integrated electronics...
  21. ncbi request reprint Medical imaging using capacitive micromachined ultrasonic transducer arrays
    Jeremy Johnson
    Edward L Ginzton Laboratory, Stanford University, CA 94305, USA
    Ultrasonics 40:471-6. 2002
    ..Beamforming and image formation algorithms that aim to reduce the complexity of data acquisition hardware are tested via numerical simulations and using real data acquired from our system...