Transvaginal Ultrasound in the Assessment of Bladder Volumes in Women: Preliminary Report

Authors:
  • MFM.I. Frazer
    M.I. Frazer
  • JSJ. R. Sutherst
    J. R. Sutherst
  • CWC. R. West
    C. R. West
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Abstract
Summary— Transvaginal linear array ultrasound is described as a method of measuring bladder volumes in the range 2 to 175 ml, overcoming the limitations of abdominal ultrasound at these smaller (though clinically important) volumes. The mean error over the range 10 to 175 ml was 23%. Statistical analysis of preliminary data obtained by this technique shows that bladder volume in ml can be calculated by the formula: Volume = 5.9 × (height × depth) ‐ 14.6 ml (95% confidence limits=±37 ml)