Device for measuring radiation absorption in a section of a...

Details Device for measuring radiation absorption in a section of a... Device for measuring radiation absorption in a section of a...

H - Electricity

05

G

358/11

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

Patent

CA 1044819

ABSTRACT It is known that measurements according to the EMI principle, utilizing a large number of radiation detectors which detect a wedge-shaped stopped beam behind an object to be examined, can be performed substantiallyquicker, but the calculation of the ab- sorption in individual points of the plane of examine- tion, performed on the basis of the measuring values thus obtained, is comparatively inaccurate, because absorption are based on the assumption that the radi- ation passes through the object to be examined along parallel extending straight lines or strips. The accuracy is improved in accordance with the invention in that use is made of a calculating circuit which interpolates, on the basis of the values measured, ab- sorption values which can be expected along sets of mutually parallel extending strips which cross each other at different angles. The absorption in the sec- manner on the basis of these values.

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