Christos E Constantinou

Summary

Affiliation: Stanford University
Country: USA

Publications

  1. ncbi request reprint Displacement sequence and elastic properties of anterior prostate/urethral interface during micturition of spinal cord injured men
    Christos E Constantinou
    Spinal Cord Injury Center, Palo Alto, VA Medical System, Palo Alto, CA, USA
    Ultrasound Med Biol 28:1157-63. 2002
  2. ncbi request reprint Direction sensitive sensor probe for the evaluation of voluntary and reflex pelvic floor contractions
    Christos E Constantinou
    Stanford University Medical School, Stanford, California 94305, USA
    Neurourol Urodyn 26:386-91. 2007
  3. pmc Dynamics of female pelvic floor function using urodynamics, ultrasound and Magnetic Resonance Imaging (MRI)
    Christos E Constantinou
    Department of Urology, Stanford University Medical School, Stanford, CA 94305, USA
    Eur J Obstet Gynecol Reprod Biol 144:S159-65. 2009
  4. ncbi request reprint Visualization of biomechanical properties of female pelvic floor function using video motion tracking of ultrasound imaging
    Shirin Rahmanian
    VA and Stanford University Medical School Urology, Stanford, CA, USA
    Stud Health Technol Inform 132:390-5. 2008
  5. doi request reprint Influence of pelvic floor muscle contraction on the profile of vaginal closure pressure in continent and stress urinary incontinent women
    Keiichi Shishido
    Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
    J Urol 179:1917-22. 2008
  6. ncbi request reprint 2D Ultrasound image processing in identifying responses of urogenital structures to pelvic floor muscle activity
    Qiyu Peng
    Department of Urology, School of Medicine Stanford University, Stanford, CA 94306, USA
    Ann Biomed Eng 34:477-93. 2006
  7. ncbi request reprint Effect of Pygeum africanum tadenan on micturition and prostate growth of the rat secondary to coadministered treatment and post-treatment with dihydrotestosterone
    Yosh Yoshimura
    Department of Urology, Fukushima Medical University, Fukushima, Japan
    Urology 61:474-8. 2003
  8. ncbi request reprint Spatial distribution of vaginal closure pressures of continent and stress urinary incontinent women
    Qiyu Peng
    PAVA Medical Center and Stanford University School of Medicine Urology, CA 94305, USA
    Physiol Meas 28:1429-50. 2007
  9. ncbi request reprint Micro-mechanical sensing platform for the characterization of the elastic properties of the ovum via uniaxial measurement
    Yoshinobu Murayama
    College of Engineering, Nihon University, Koriyama, Fukushima 963 8642, Japan
    J Biomech 37:67-72. 2004
  10. ncbi request reprint High resolution regional elasticity mapping of the human prostate
    Yoshinobu Murayama
    College of Engineering, Nihon University, Koriyama, Fukushima, 9638642 Japan
    Conf Proc IEEE Eng Med Biol Soc 2007:5803-6. 2007

Collaborators

Detail Information

Publications15

  1. ncbi request reprint Displacement sequence and elastic properties of anterior prostate/urethral interface during micturition of spinal cord injured men
    Christos E Constantinou
    Spinal Cord Injury Center, Palo Alto, VA Medical System, Palo Alto, CA, USA
    Ultrasound Med Biol 28:1157-63. 2002
    ..Clinical application of this method could include quantification of the biomechanics of micturition consequent to spinal injury, prostatic enlargement, and the impact of targeted evaluation of pharmacological interventions...
  2. ncbi request reprint Direction sensitive sensor probe for the evaluation of voluntary and reflex pelvic floor contractions
    Christos E Constantinou
    Stanford University Medical School, Stanford, California 94305, USA
    Neurourol Urodyn 26:386-91. 2007
    ....
  3. pmc Dynamics of female pelvic floor function using urodynamics, ultrasound and Magnetic Resonance Imaging (MRI)
    Christos E Constantinou
    Department of Urology, Stanford University Medical School, Stanford, CA 94305, USA
    Eur J Obstet Gynecol Reprod Biol 144:S159-65. 2009
    ..Furthermore, observations suggest that timing of responses is a significant factor separating the continent from the incontinent subjects...
  4. ncbi request reprint Visualization of biomechanical properties of female pelvic floor function using video motion tracking of ultrasound imaging
    Shirin Rahmanian
    VA and Stanford University Medical School Urology, Stanford, CA, USA
    Stud Health Technol Inform 132:390-5. 2008
    ..We conclude that new and clinically significant amount of original information about the female pelvic floor can be obtained through the proposed analysis of visualizations...
  5. doi request reprint Influence of pelvic floor muscle contraction on the profile of vaginal closure pressure in continent and stress urinary incontinent women
    Keiichi Shishido
    Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
    J Urol 179:1917-22. 2008
    ..Vaginal pressure profile data were used to test the hypothesis that the strength of pelvic floor muscle contractions differs significantly between continent women and women with stress urinary incontinence...
  6. ncbi request reprint 2D Ultrasound image processing in identifying responses of urogenital structures to pelvic floor muscle activity
    Qiyu Peng
    Department of Urology, School of Medicine Stanford University, Stanford, CA 94306, USA
    Ann Biomed Eng 34:477-93. 2006
    ..It is concluded that a considerable amount of new, potentially useful clinical information can be revealed from video recordings of perineal ultrasound using the image analysis approach proposed...
  7. ncbi request reprint Effect of Pygeum africanum tadenan on micturition and prostate growth of the rat secondary to coadministered treatment and post-treatment with dihydrotestosterone
    Yosh Yoshimura
    Department of Urology, Fukushima Medical University, Fukushima, Japan
    Urology 61:474-8. 2003
    ....
  8. ncbi request reprint Spatial distribution of vaginal closure pressures of continent and stress urinary incontinent women
    Qiyu Peng
    PAVA Medical Center and Stanford University School of Medicine Urology, CA 94305, USA
    Physiol Meas 28:1429-50. 2007
    ..The results show that the VPP measured by the prototype probe can be used to quantitatively evaluate the strength of the PFM, which is a clinical index for the diagnosis or assessment of female SUI...
  9. ncbi request reprint Micro-mechanical sensing platform for the characterization of the elastic properties of the ovum via uniaxial measurement
    Yoshinobu Murayama
    College of Engineering, Nihon University, Koriyama, Fukushima 963 8642, Japan
    J Biomech 37:67-72. 2004
    ..0363. It is concluded that a reason that the stiffness of ovum measured in the present study is approximately six times larger than previously reported, may be due to the absence of large deformation present in of existing methodologies...
  10. ncbi request reprint High resolution regional elasticity mapping of the human prostate
    Yoshinobu Murayama
    College of Engineering, Nihon University, Koriyama, Fukushima, 9638642 Japan
    Conf Proc IEEE Eng Med Biol Soc 2007:5803-6. 2007
    ..Using this methodology we mapped the elasticity of human prostate cancer (CaP) and it was obviously observed that the node was significantly harder than surrounding normal tissues and had some textures...
  11. ncbi request reprint A critical review of the pharmacology of the plant extract of Pygeum africanum in the treatment of LUTS
    Alan D Edgar
    Fournier Pharma, Daix, France
    Neurourol Urodyn 26:458-63; discussion 464. 2007
    ..These results, corroborated in part by short-term clinical efficacy, set the stage for a large-scale clinical trial to investigate the efficacy of Pygeum africanum extract in the treatment of lower urinary tract symptoms...
  12. ncbi request reprint Supraspinal N-methyl-D-aspartate receptor inhibition influences the micturition reflex and function of the upper urinary tract of anesthetized and conscious rats
    Bernd Tillig
    Department of Pediatric Surgery, Ruhr University of Bochum, Germany
    Neurourol Urodyn 22:164-75. 2003
    ....
  13. ncbi request reprint Remote sensing of mechanical properties of materials using a novel ultrasound transducer and signal processing
    Yoshinobu Murayama
    College of Engineering, Nihon University, Koriyama, Fukushima 963 8642, Japan
    IEEE Trans Ultrason Ferroelectr Freq Control 52:439-44. 2005
    ..Such measurements obviate the need to apply the force-deformation approach and may be used to enable stiffness imaging...
  14. ncbi request reprint Functional and anatomical effects of hormonally induced experimental prostate growth: a urodynamic model of benign prostatic hyperplasia (BPH) in the beagle
    Takeshi Yokota
    Department of Urology, Fukushima Medical School, Fukushima, Japan
    Prostate 58:156-63. 2004
    ..In the present study a canine prostatic enlargement model, using 5alpha-dihydrotestosterone (DHT) + 17beta-estradiol (E) was adapted in order to produce a more gradual onset of partial obstruction and impaired voiding...
  15. pmc Ultrasound evaluation of dynamic responses of female pelvic floor muscles
    Qiyu Peng
    PAVA Medical Center and Department of Urology, Stanford University School of Medicine, Stanford, CA 943050, USA
    Ultrasound Med Biol 33:342-52. 2007
    ..The statistical analyses showed that the PFM responses of the healthy subjects and the SUI patients are significantly different in both the supine and standing experiments...