EP22.06: The feasibility of translabial ultrasound assessment of pelvic organ prolapse based on preset reference lines in the pelvic MR imaging: Electronic Poster Abstracts

To provide valuable reference lines for translabial ultrasound in diagnosis pelvic organ prolapse (POP) according to the preset reference lines of MR imaging. The 114 cases of women with static pelvic MR examination data were retrospectively analysed. All patients were excluded from the pelvic masses, pelvic surgery histories, chemotherapy and radiotherapy histories, and were divided into six groups by age: The reference lines were set on the Mid-sagittal T2-weighted MR images respectively: H line (the line from the inferior border of the symphysis pubis to the posterior anorectal junction), mid-pubic line (MPL), perineal line (the line connecting the internal surface of the symphysis pubis to the caudal end of the internal anal sphincter, PL) and PM line (the line connecting of the inferior margin of pubic symphysis and the M point [the midpoint of the line from the cross-point of H line and PL], PML). The angles between the horizontal line and H line, MPL, PL, PML were measured respectively. The differences in reference line measurements between the six age groups were compared, and the consistency of the measurements between the two observers was assessed. The average angle between MPL and the horizontal line is 30.50±6.25 degrees, and there is no significant difference between the age groups (P>0.05). PML was the closest line to the horizontal line, the average angle was 8.42±6.04 degrees (P>0.05), and the consistency of the two observers were good (P<0.01). The angle between the MPL and the horizontal line obtained in this study was not 45 degree reported in previous studies. PML was closest to the horizontal line in MRI, but the feasibility of translabial ultrasound needs to be further verified. Furthermore, we highly recommend using the perineal line as a reference line for diagnosis POP, because it is easy to obtain under the translabial ultrasound in the resting state of human body and closely associated with the clinic. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.