Mechanical Imaging: Vagina

Example of 3D reconstruction for the phantom internal mechanical structure

Pelvic organ prolapse (POP) is a major health concern affecting a large number of women each year. The POP is the leading reason for hysterectomy in postmenopausal women and it accounts for 15-18% of procedures in all age-groups. This condition is a highly prevalent affecting more 50% of women in the US during their lifetimes. The lifetime risk of undergoing surgery for prolapse or urinary incontinence for women is in the range from 11% to 19%. Determining the most effective and durable repair with lowest morbidity rate and cost is imperative.

Example of 3D reconstruction for the phantom internal mechanical structure

Vaginal Tactile Imager (VTI) is a 3-D tissue elasticity imaging device. VTI utilizes tactile and motion tracking sensors incorporated into a probe that is used by a clinician to examine the vagina. The recorded tactile patterns obtained by gently pressing the probe against the vaginal wall are used to create a 3-D tactile image of the vaginal circumference visualizing the elasticity of surrounding muscle and support structures. The anterior and posterior compartments are visualized in 3 orthogonal cross-sections of created 3-D tactile image. The device provides quantitative assessment of changes in tissue elasticity and anatomy. The VTI is capable to assess the outcomes of conservative and surgical treatment of pelvic floor disorders.

Currently there are no efficient, standardized, non-invasive techniques for assessing development of POP and monitoring its treatment. VTI fills this gap providing a possibility to detect and quantitatively characterize the changes in physiological and anatomical manifestations of female pelvic floor tissue transformation. The commercialization partner of Artann, a startup company Advanced Tactile Imaging. Inc., applies efforts to bring VTI to worldwide market.

Selected Publications and Patents
  1. Egorov V, van Raalte H, Lucente V, Sarvazyan A. Biomechanical characterization of the pelvic floor using tactile imaging. In: Biomechanics of the Female Pelvic Floor, Eds. Hoyte L, Damaser MS, 1st Editioin, Elsevier, March 22, 2016: 317-348.
  2. van Raalte H. Egorov V. Tactile imaging markers to characterize female pelvic floor conditions.Open Journal of Obstetrics and Gynecology 2015; 5: 505-515.
  3. van Raalte H, Lucente V, Egorov V. High definition pressure mapping of the pelvic floor muscles during Valsalva manever, voluntary muscle contraction and involuntary relaxation.Female Pelvic Medicine Reconstructive Surgery 2015; 21(5): S149-S150.
  4. Van Raalte H, Egorov V. Characterizing female pelvic floor conditions by tactile imaging.International Urogynecology Journal 2015; 26(4): 607-9, PMID: 25344223 with Video Supplement.
  5. Tactile imaging for quantifying vaginal elasticity in prolapse. Nature Reviews Urology 2012; 9(2): 60.
  6. Egorov V, van Raalte H, Lucente V. Quantifying vaginal tissue elasticity under normal and prolapse conditions by tactile imaging. International Urogynecology Journal 2012; 23(4):459-66.
  7. Egorov V, van Raalte H, Sarvazyan A. Vaginal Tactile Imaging. IEEE Transactions on Biomedical Engineering 2010; 57(7):1736-444.
  8. Egorov V, van Raalte H, Sarvazyan AP. Methods for assessment of pelvic organ conditions affecting the vagina. USA Patent 8,187,208; May 29, 2012.
  9. Egorov V, Sarvazyan AP. Methods for characterizing vaginal tissue elasticity. USA Patent 8,052,622; Nov 8, 2011
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