Abstract #4552
Reproducibility of Diffusion Weighted MRI under Active Breathing Coordinator control
Evangelia Kaza 1 , David Collins 1 , Richard Symonds-Tayler 1 , Rafal Panek 1 , and Martin Osmund Leach 1
1
CR-UK and EPSRC Cancer Imaging Centre,
Institute of Cancer Research and Royal Marsden Hospital,
Sutton, Surrey, United Kingdom
The feasibility of diffusion-weighted (DW) MRI
automatically acquired during breath holding enforced by
a modified, MR-compatible Active Breathing Coordinator
(ABC) system was demonstrated on healthy volunteers. The
position of abdominal organs, major vessels and the
diaphragm was shown to be reproducible between different
measurements under ABC control at the same inhaled air
volume and unaffected by changes of non-spatial sequence
parameters. The observed repeatability of organ position
using the ABC device suggests that DW-MRI with
controlled lung volume can be matched to CT images
acquired with the same ABC settings and thus support
radiotherapy treatment planning.
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