Apparatus for tomography comprising a pin hole for forming a mic

Details Apparatus for tomography comprising a pin hole for forming a mic Apparatus for tomography comprising a pin hole for forming a mic

1976-09-03

1977-08-30

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

With means to inspect passive solid objects

250445T, A61B 602, G01N 2308, G03B 4116, H05G 130

Patent

active

040456722

ABSTRACT:
In an X-ray generating column, an X-ray microbeam is generated by irradiating a target with a scanning finely focused electron beam and permitting the microbeam to pass a pin hole in a beam guide plate or baffle. The take off direction of the X-ray microbeam is varied by scanning said electron beam over the target. The X-ray microbeam irradiates and passes through a thin slice plane of an object. The X-ray generating column rotates around the object. The rotation and electron beam scanning signals and the output signal of a detector for the X-rays passed through object are memorized by a memory circuit. A calculating circuit then calculates the X-ray absorption coefficient at each micro matrix area on the slice plane of the object, and delivers the respective outputs to an image display means to display an X-ray image of a slice plane of the object.

REFERENCES:
patent: 4002917 (1977-01-01), Mayo
patent: 4010370 (1977-03-01), Lemay

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