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Imaging modalities for brachy planning
MRI
Gold standard for most pelvic sites (T2)
3D image acquisition techniques with good resolution in all
planes (isotropic 1 mm voxel size possible!)
Functional MRI possible ( specific QA/QC must be
implemented)
Adapted from L. Beaulieu ABP ESTRO Course 2016
Must have compatible catheters and applicators
No electron density (might not be an issue for high energy
brachytherapy,
192
Ir and over (1% deviation
Kirisits 2013
))
Potential distortions
Potential patient motion between or during sequences