Abstract #0640
Comparison of optimized endovaginal vs. external array coil T2-W and Diffusion-Weighted imaging techniques for detecting suspected early stage (Ia/Ib1) uterine cervical cancer
Kate Downey 1 , Veronica Morgan 1 , Alison MacDonald 1 , Sharon Giles 1 , John Shepherd 2 , Thomas Ind 2 , Ayoma Attygalle 3 , Steve Hazell 3 , and Nandita deSouza 1
1
CRUK Cancer Imaging Centre, The Institute of
Cancer Research and The Royal Marsden Hospital, Sutton,
Surrey, United Kingdom,
2
Gynaecological
Surgery, The Royal Marsden Hospital, London, United
Kingdom,
3
Histopathology,
The Royal Marsden Hospital, London, United Kingdom
Endovaginal MRI using T2-W sequences is more sensitive
(87% vs. 73.9%) but less specific (80% vs. 93.3%) than
equivalent optimized external array imaging for
detecting suspected Ia1/2 and Ib1 cervical tumors.
Addition of diffusion-weighted sequences to T2-W
protocols obtained with an endovaginal coil
substantially improves specificity (80% to 93.3%).
Addition of diffusion-weighted imaging to T2-W protocols
acquired using an external array coil however merely
serves to reduce sensitivity (73.9% to 65.2%) for
detecting these small (1cm) tumors.
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