Abstract #2197
MRI Provides More Accurate Renal Motion Estimation than 4D-CT for Radiation Treatment Planning in Young Children
Adam M Winchell 1,2 , Atmaram Pai Panandiker 1 , Ruitian Song 1 , Ralf B Loeffler 1 , and Claudia M Hillenbrand 1
1
Radiological Sciences, St. Jude Childrens
Research Hospital, Memphis, TN, United States,
2
Biomedical
Engineering, University of Memphis, Memphis, TN, United
States
In this study, we measured respiratory induced kidney
motion in young children with abdominal neuroblastoma
using both 4D-CT and real-time MRI to evaluate tracking
accuracy. Real-time MRI provides a more desirable tissue
contrast of the kidney and had about two times higher
spatial resolution in the superior/inferior direction
compared to 4D-CT which enabled superior demarcation of
organ boundaries, anatomical tracking, and improved
accuracy.
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