Tomography using an out-fanning beam of rays

Details Tomography using an out-fanning beam of rays Tomography using an out-fanning beam of rays

H - Electricity

05

G

358/11.1

H05G 1/00 (2006.01) A61B 6/03 (2006.01)

Patent

CA 1073123

Abstract of the Disclosure A method and apparatus for pre-processing radiological information obtained by exposing a subject at various spaced positions on one side of this subject to an out-fanning, substantially flat beam of penetrating radiation. The resultant ray transmissions on the other side of the subject are recorded on a record medium along a collection of recording paths each having a predetermined trajectory and a spatial orientation related to an associated position of exposure. The radiological information thus recorded is then scanned and read-out along another collection of adjacent scanning paths each having a predetermined trajectory which intersects different recording paths and likewise having a spatial orientation related to the associated position of exposure. The information thus read out represents radiological information resulting from a virtual exposure to substantially parallel rays of penetrating radiation, and permits the reconstruction of desired laminal planes of the subject by means of a process involving a single convolution function.

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