According to the Dentiray Capture/XrayVision DCV User Manual:
“The deletion of images is disabled to protect data integrity and prevent data loss. The ghost and retake bins allow images to be 'hidden' from the image collection screen, stimulating the image being deleted.”
NOTE: For more information, please consult the full “Dentiray Capture/XrayVision DCV User Manual” located within Denticon’s Help Portal.