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There are two image-related configuration options:
If the configuration option Reorient to Standard Orientation is enabled, the user has to select the type of "standard orientation". When HEAD FIRST is selected the images are reoriented into the head first supine (HFS) orientation. This adjustment is performed without reslicing, using only rotations by 90 degrees or multiplications of this value. It is applied because a consistent orientation is important for the automatic short axis reorientation routine. If this operation is not adequate, please activate the with Operation button button during loading and use the Assistance button to correctly HFS orient the PET study.
If the Set Acquisition Start Time to zero option is enabled, the start time of the first selected acquisition is set to zero, and the other frame times adjusted accordingly. This setting is highly recommended because due to DICOM compatibility issues the whole data may be shifted in time. In such a case, kinetic modeling will most likely not result in valid estimated.