Device for determining internal body structures by means of scat

Details Device for determining internal body structures by means of scat Device for determining internal body structures by means of scat

1979-07-11

1981-07-07

Willis, Davis L.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

250369, A61B 600

Patent

active

042776864

ABSTRACT:
The invention relates to a device for measuring a scatter coefficient distribution in a plane of a body. The plane is irradiated in different directions by a primary radiation beam along beam paths which are each time situated in parallel in a direction. Scattered radiation which is generated by a primary radiation beam along its path is measured by detectors which are situated on both sides of the plane and which enclose the body as completely as possible. The scatter coefficient distribution is determined by iteration by calculating a scatter value for each beam path from an assumed distribution and by comparing this scatter value with the associated measured scattered radiation. From the difference between calculated and measured values a correction is determined and taken up in the calculated value.

REFERENCES:
patent: 4124804 (1978-11-01), Mirell
patent: 4149080 (1979-04-01), Schittenhelm

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