Abstract: A scanned volume computerized tomography scanner in which an electron beam is scanned along a target to generate successive cones of x-rays. A vane collimator receives said x-rays and from successive adjacent fan becomes for irradiating a volume of an object. A detector array receives the x-ray fan becomes and generates signals representative of the transmitted x-ray amplitude across the fan beams. The object and x-ray source are rotated relative to one another to collect data for reconstructing an image of the scanned volume.