Feasibility of diffusion tensor imaging DTI with fibre tractography of the normal female pelvic floorReport as inadecuate




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European Radiology

, Volume 21, Issue 6, pp 1243–1249

First Online: 01 January 2011Received: 01 September 2010Revised: 18 October 2010Accepted: 03 November 2010

Abstract

ObjectivesTo prospectively determine the feasibility of diffusion tensor imaging DTI with fibre tractography as a tool for the three-dimensional 3D visualisation of normal pelvic floor anatomy.

MethodsFive young female nulliparous subjects mean age 28 ± 3 years underwent DTI at 3.0T. Two-dimensional diffusion-weighted axial spin-echo echo-planar SP-EPI pulse sequence of the pelvic floor was performed, with additional T2-TSE multiplanar sequences for anatomical reference. Fibre tractography for visualisation of predefined pelvic floor and pelvic wall muscles was performed offline by two observers, applying a consensus method. Three eigenvalues λ1, λ2, λ3, fractional anisotropy FA and mean diffusivity MD were calculated from the fibre trajectories.

ResultsIn all subjects fibre tractography resulted in a satisfactory anatomical representation of the pubovisceral muscle, perineal body, anal - and urethral sphincter complex and internal obturator muscle. Mean FA values ranged from 0.23 ± 0.02 to 0.30 ± 0.04, MD values from 1.30 ± 0.08 to 1.73 ± 0.12 × 10³ mm²-s. Muscular structures in the superficial layer of the pelvic floor could not be satisfactorily identified.

ConclusionsThis study demonstrates the feasibility of visualising the complex three-dimensional pelvic floor architecture using 3T-DTI with fibre tractography. DTI of the deep female pelvic floor may provide new insights into pelvic floor disorders.

KeywordsMagnetic Resonance Imaging MRI Diffusion Tensor Imaging DTI Pelvic floor Fibre tractography Anatomy  Download fulltext PDF



Author: F. M. Zijta - M. Froeling - M. P. van der Paardt - M. M. E. Lakeman - S. Bipat - A. D. Montauban van Swijndregt - G. 

Source: https://link.springer.com/







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