Abstract #3637
Clinical Feasibility of Distortion Corrected Diffusion-Weighted (DW) Images of Human Cervix
Maysam Jafar 1 , Katherine Downey 1 , Sharon L Giles 2 , Veronica A Morgan 2 , Geoffrey S Payne 1 , and Nandita M DeSouza 1
1
Clinical Magnetic Resonance Unit, Institute
of Cancer Research, Sutton, Surrey, United Kingdom,
2
Clinical
Magnetic Resonance Unit, Royal Marsden Hospital, Sutton,
Surrey, United Kingdom
DW sequences improve detection of cervical tumor but are
prone to distortions, worse when using an endovaginal
receiver coil. We corrected image distortions by
acquiring forward and reverse gradient images and then
used Chang&Fitzpatricks reverse gradient algorithm.
Assessment of the correction by measuring the angle of
the endocervical canal to the horizontal on corrected
and uncorrected high b-value images showed significant
differences in the former but not the latter when
compared to measurements from T2-W images. Normalised
cross-correlation using template matching to assess
similarities between corrected/uncorrected DW and T2-W
images varied marginally, indicating the need for
feature tracking techniques.
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