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Cameras callibrated to
CT system position and
localizing the US probe
Optical Tracking
System (OTS) for
localization
CT
system
Transperineal
US scanning
Probe position is
correlated to the US
volume scanned and
hence to the target
(prostate)
US
system
Research 4DUS system at MAASTRO Clinic (Maastricht, Netherlands)
Courtesy by F. Verhaegen