What are the differences between tomosynthesis/ laminography and CT?
In computed tomography, a three-dimensional image is generated by rotating the object 360 °around a single axis of rotation while taking between 200 and 2000 two-dimensional X-ray images. During this process, the X-ray beam hits the object perpendicular to the axis of rotation. Afterwards, the final three-dimensional image is numerically reconstructed based on the two- dimensional images. The three-dimensional image can be separated into virtual slices enabling analysis of the object at any angle. In digital laminography, an X-ray source and a digital detector move asynchronously on circular orbits around the same axis in such way that only the points in one plane, the focal plane, project to the same position on the detector while the points in all other planes are blurred. The focal plane is what the user is seeing on the detector during this process- an oblique view image, for example at an 45° angle, of always the exact same object detail. This way, between 8 to 30 images are taken
