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Other image possibilities
Cone beam CT images?
Image quality of CBCT images << CT images
HU
CT
≠
HU
CBCT
Needs separate calibration
CBCT sensitive to motion artifacts
Hatton PMB 54 (2007): 20% dose
errors for MV photons based on CBCT
MRI images?
Dowling IJROBP 83 (2012). Prostate
Atlas-based electron density mapping method
PseudoCT and planning CT dose differences<2%.
Planning CT and pseudoCT distributions equivalent
Full examination of uncertainties needed