Does Body Position Affect Ultrasound Measurements of Bladder-Wall Elasticity?

Shaheeda A. Adusei, Adriana V. Gregory, Eric C. Polley, Azra Alizad, Mostafa Fatemi

Research output: Contribution to journalArticlepeer-review


Ultrasound bladder vibrometry (UBV) parameters have been shown in previous studies to strongly correlate with measurements from urodynamic studies. Just like urodynamic studies, UBV can be performed in supine and sitting positions. The objective of this study is to compare UBV parameters obtained in the two different positions using statistical methods. We recruited eight volunteers with healthy bladders for this purpose. The elasticity, group velocity squared and thickness of the bladder were the UBV parameters of interest, and their values were recorded at different bladder volumes for each volunteer. The results presented indicate that the measurements made in the two positions are in agreement using the Bland–Altman method and a parameter q which compares the values at each bladder volume for each volunteer. UBV parameters were also repeatable for measurements recorded in the supine and sitting positions.

Original languageEnglish (US)
Pages (from-to)1115-1119
Number of pages5
JournalUltrasound in Medicine and Biology
Issue number4
StatePublished - Apr 2021


  • Bladder wall elasticity
  • Compliance
  • Detrusor thickness
  • Elasticity
  • Transabdominal ultrasound
  • Ultrasound bladder vibrometry

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Biophysics
  • Acoustics and Ultrasonics


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