Timothy A Bigelow

Summary

Affiliation: University of North Dakota
Country: USA

Publications

  1. doi request reprint Ultrasound histotripsy and the destruction of Escherichia coli biofilms
    Timothy A Bigelow
    University of North Dakota, Grand Forks, 58202, USA
    Conf Proc IEEE Eng Med Biol Soc 2008:4467-70. 2008
  2. ncbi request reprint Impact of local attenuation approximations when estimating correlation length from backscattered ultrasound echoes
    Timothy A Bigelow
    Department of Electrical Engineering, University of North Dakota, Box 7165, Grand Forks, North Dakota 58202, USA
    J Acoust Soc Am 120:546-53. 2006
  3. pmc Ultrasound attenuation estimation using backscattered echoes from multiple sources
    Timothy A Bigelow
    Department of Electrical Engineering, University of North Dakota, PO Box 7165, Grand Forks, ND 58202, USA
    J Acoust Soc Am 124:1367-73. 2008
  4. pmc In vivo ultrasonic attenuation slope estimates for detecting cervical ripening in rats: Preliminary results
    Timothy A Bigelow
    Department of Electrical Engineering, University of North Dakota, Box 7165, Grand Forks, North Dakota 58202, USA
    J Acoust Soc Am 123:1794-800. 2008
  5. ncbi request reprint Hemorrhage near fetal rat bone exposed to pulsed ultrasound
    Timothy A Bigelow
    Department of Electrical Engineering, University of North Dakota, Grand Forks, ND 58202, USA
    Ultrasound Med Biol 33:311-7. 2007
  6. doi request reprint The destruction of Escherichia coli biofilms using high-intensity focused ultrasound
    Timothy A Bigelow
    Department of Electrical Engineering, School of Engineering and Mines, University of North Dakota, Grand Forks, ND, USA
    Ultrasound Med Biol 35:1026-31. 2009
  7. pmc A theoretical comparison of attenuation measurement techniques from backscattered ultrasound echoes
    Yassin Labyed
    Department of Electrical Engineering, Iowa State University, Ames, Iowa 50011, USA
    J Acoust Soc Am 129:2316-24. 2011
  8. ncbi request reprint Evaluation of the spectral fit algorithm as functions of frequency range and deltakaeff
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, Urbana, IL 61801, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 52:2003-10. 2005
  9. ncbi request reprint Signal processing strategies that improve performance and understanding of the quantitative ultrasound SPECTRAL FIT algorithm
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, 405 North Mathews, Urbana, Illinois 61801, USA
    J Acoust Soc Am 118:1808-19. 2005
  10. pmc A model for estimating ultrasound attenuation along the propagation path to the fetus from backscattered waveforms
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, 405 North Mathews, Urbana, Illinois 61801, USA
    J Acoust Soc Am 118:1210-20. 2005

Detail Information

Publications14

  1. doi request reprint Ultrasound histotripsy and the destruction of Escherichia coli biofilms
    Timothy A Bigelow
    University of North Dakota, Grand Forks, 58202, USA
    Conf Proc IEEE Eng Med Biol Soc 2008:4467-70. 2008
    ..However, the persistence of some CFU for some of the biofioms at the higher exposure settings needs to be resolved prior to implementing the treatment clinically...
  2. ncbi request reprint Impact of local attenuation approximations when estimating correlation length from backscattered ultrasound echoes
    Timothy A Bigelow
    Department of Electrical Engineering, University of North Dakota, Box 7165, Grand Forks, North Dakota 58202, USA
    J Acoust Soc Am 120:546-53. 2006
    ..The most robust estimates were obtained when the local attenuation was approximated by a tissue-independent attenuation value that was greater than 70% of the largest attenuation expected in the tissue region of interest...
  3. pmc Ultrasound attenuation estimation using backscattered echoes from multiple sources
    Timothy A Bigelow
    Department of Electrical Engineering, University of North Dakota, PO Box 7165, Grand Forks, ND 58202, USA
    J Acoust Soc Am 124:1367-73. 2008
    ..0+/-3.1% for a tissue attenuation of 0.9 dB / cm-MHz demonstrating that the attenuation along the propagation path could be accurately determined using backscattered echoes from multiple sources using the derived algorithm...
  4. pmc In vivo ultrasonic attenuation slope estimates for detecting cervical ripening in rats: Preliminary results
    Timothy A Bigelow
    Department of Electrical Engineering, University of North Dakota, Box 7165, Grand Forks, North Dakota 58202, USA
    J Acoust Soc Am 123:1794-800. 2008
    ..The large variances in the in vivo results were most likely due to the natural variation in attenuation for biological tissue between animals...
  5. ncbi request reprint Hemorrhage near fetal rat bone exposed to pulsed ultrasound
    Timothy A Bigelow
    Department of Electrical Engineering, University of North Dakota, Grand Forks, ND 58202, USA
    Ultrasound Med Biol 33:311-7. 2007
    ..6 W/cm(2); PRF was 500 Hz. Hemorrhage occurrence increased slightly with increasing I(TA), as well as peak rarefactional pressure and PRF, but the hemorrhage area did not correlate with any of the exposure parameters...
  6. doi request reprint The destruction of Escherichia coli biofilms using high-intensity focused ultrasound
    Timothy A Bigelow
    Department of Electrical Engineering, School of Engineering and Mines, University of North Dakota, Grand Forks, ND, USA
    Ultrasound Med Biol 35:1026-31. 2009
    ..However, the ability of some bacteria to survive at the higher exposure settings needs to be resolved prior to implementing the treatment clinically...
  7. pmc A theoretical comparison of attenuation measurement techniques from backscattered ultrasound echoes
    Yassin Labyed
    Department of Electrical Engineering, Iowa State University, Ames, Iowa 50011, USA
    J Acoust Soc Am 129:2316-24. 2011
    ..Lastly, when the scatterer size varied, all of the methods failed...
  8. ncbi request reprint Evaluation of the spectral fit algorithm as functions of frequency range and deltakaeff
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, Urbana, IL 61801, USA
    IEEE Trans Ultrason Ferroelectr Freq Control 52:2003-10. 2005
    ..Similarly, the accuracy and precision of the total attenuation estimate were improved by increasing the frequency range used by the spectral fit algorithm...
  9. ncbi request reprint Signal processing strategies that improve performance and understanding of the quantitative ultrasound SPECTRAL FIT algorithm
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, 405 North Mathews, Urbana, Illinois 61801, USA
    J Acoust Soc Am 118:1808-19. 2005
    ..e., form factor) is not known...
  10. pmc A model for estimating ultrasound attenuation along the propagation path to the fetus from backscattered waveforms
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, 405 North Mathews, Urbana, Illinois 61801, USA
    J Acoust Soc Am 118:1210-20. 2005
    ..The independence of the attenuation estimate and plane orientation is then demonstrated experimentally using a Plexiglas plate, a rat's skull, and a tissue-mimicking phantom...
  11. ncbi request reprint Estimation of total attenuation and scatterer size from backscattered ultrasound waveforms
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801, USA
    J Acoust Soc Am 117:1431-9. 2005
    ..However, the precision quickly degraded with increasing noise, increasing attenuation, and decreasing window length...
  12. ncbi request reprint Scatterer size estimation in pulse-echo ultrasound using focused sources: calibration measurements and phantom experiments
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University, of Illinois, 405 North Mathews, Urbana, Illinois 61801, USA
    J Acoust Soc Am 116:594-602. 2004
    ....
  13. ncbi request reprint Scatterer size estimation in pulse-echo ultrasound using focused sources: theoretical approximations and simulation analysis
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, 405 North Mathews, Urbana, Illinois 61801, USA
    J Acoust Soc Am 116:578-93. 2004
    ..The generalized attenuation-compensation function yielded results accurate to 7.2% while the traditional attenuation-compensation functions that neglected focusing had errors as high as 103%...
  14. ncbi request reprint Experimental evaluation of indicators of nonlinearity for use in ultrasound transducer characterizations
    Timothy A Bigelow
    Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, Urbana IL, USA
    Ultrasound Med Biol 28:1509-20. 2002
    ..None of the eight nonlinearity indicators yielded consistent results. The lack of consistency resulted from the competing effects of nonlinear absorption and asymmetrical distortion, which have yet to be combined into a unified theory...