3D-Volume Rendering of the Pelvis with Emphasis on Paraurethral Structures Based on MRI Scans and Comparisons between 3D Slicer and OsiriX\xae

C M Durnea,D Nazarian,P M Sedgwick,S Siddiqi,S K Doumouchtsis,G Munneke

doi:10.1007/s10916-020-01695-3

Abstract

The feasibility of rendering three dimensional (3D) pelvic models of vaginal, urethral and paraurethral lesions from 2D MRI has been demonstrated previously. To quantitatively compare 3D models using two different image processing applications: 3D Slicer and OsiriX. Secondary analysis and processing of five MRI scan based image sets from female patients aged 29–43 years old with vaginal or paraurethral lesions. Cross sectional image sets were used to create 3D models of the pelvic structures with 3D Slicer and OsiriX image processing applications. The linear dimensions of the models created using the two different methods were compared using Bland-Altman plots. The comparisons demonstrated good agreement between measurements from the two applications. The two data sets obtained from different image processing methods demonstrated good agreement. Both 3D Slicer and OsiriX can be used interchangeably and produce almost similar results. The clinical role of this investigation modality remains to be further evaluated.

Highlights

Pelvic floor disorders (PFD) can be associated with bothersome symptoms and affect women’s quality of life
University of Athens, Medical School, Athens, Greece 7 American University of the Caribbean, School of Medicine, Pembroke Pines, FL, USA. Such vaginal lesions can be associated with para-urethral Skene duct cysts [3], Müllerian cysts - congenital remnants of the paramesonephric duct [4], Gartner cysts - congenital remnants of the mesonephric duct or epidermal inclusion cysts occurring in the site of trauma or surgery [2]
This is a secondary analysis based on five cross sectional MRI images previously analysed, processed and published [6]. Both articles are using data from the same set of patients, while the previous article was focussed on possibility of rendering 3D models of pelvic structures form 2D MRI cross-sectional images, this one aims to quantitatively compare 3D models created using two different image processing applications: 3D Slicer and OsiriX

Summary

Introduction

Pelvic floor disorders (PFD) can be associated with bothersome symptoms and affect women’s quality of life. Paraurethral and vaginal lesions or structures within this area have not been extensively radiologically evaluated, and may pose clinical challenges [2]. University of Athens, Medical School, Athens, Greece 7 American University of the Caribbean, School of Medicine, Pembroke Pines, FL, USA. Such vaginal lesions can be associated with para-urethral Skene duct cysts [3], Müllerian cysts - congenital remnants of the paramesonephric duct [4], Gartner cysts - congenital remnants of the mesonephric duct or epidermal inclusion cysts occurring in the site of trauma or surgery [2]. Urethral diverticula usually occur on the posterior wall of the mid-urethra with a prevalence up to 6% of women [3]

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Conclusion