In principle , this could be done using any suitable x-ray source , but the stanford synchrotron is so powerful that it can reveal in a day what might take others months .
Together with paul tafforeau at the european synchrotron radiation facility in grenoble , france , berger 's team produced a series of ultrahigh-resolution images to create a virtual endocast : an impression of the boy 's skull showing the general contours of the outer brain layer .
