Abstract

A 3-D radiographic transmission tomography technique based on coded-aperture imaging is described. In this technique an x-ray source moving on a circular path parallel to the film projects an image of the object onto the film and convolves this image with a circle. By applying the matched filter of the circle to the image recorded on the film, any selected plane of the 3-D object can be reconstructed. The performance of this technique is analyzed by computer simulation and preliminary physical experiments. This technique may be particularly useful for 3-D reconstruction of high spatial frequency objects such as a 3-D angiogram.

© 1984 Optical Society of America

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