发明名称 |
TOMOGRAPHY USING AN OUT-FANNING BEAM OF RAYS |
摘要 |
<p>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.</p> |
申请公布号 |
CA1073123(A) |
申请公布日期 |
1980.03.04 |
申请号 |
CA19770282641 |
申请日期 |
1977.07.13 |
申请人 |
N.V. OPTISCHE INDUSTRIE ''DE OUDE DELFT'' |
发明人 |
DUINKER, SIMON |
分类号 |
G01N23/04;A61B6/03;(IPC1-7):05G1/00 |
主分类号 |
G01N23/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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