MODE OF RECEIVING TOMOGRAPHIC IMAGES WITH A POINTLESS SOURCE Russian patent published in 2007 - IPC G01N23/08 

FIELD: the invention is designed for receiving tomographic images.

SUBSTANCE: radiation from a pointless source of radioactive radiation is directed on a line of detectors. At that a collimator is installed on the measuring line with possibility of onward displacement in parallel to the line of detectors along the measuring line and with an angular rotation relatively to its own optical axis, the collimator is displaced in the direction of radiation on the extreme detector, rotating the collimator, they change the direction of radiation until receiving the maximum output signal from the detector, then similarly they direct radiation in-series on each detector displacing the collimator along the measuring line and rotating it until receiving the maximum output signal from the detector, they receive distribution of intensity of radiation in the radiation field, make emission tomogram, then the collimator is changed for an investigated object and receive a one-dimensional transmission tomogram in a different angle of approach and discretely rotating the object on an angle from 0⁰ till 180⁰ they receive one-dimensional transmission tomograms from different angles of approach, then with the aid of a computer the received information is transformed into a two-dimensional tomogram, then they put the mathematically transformed emission tomogram on a transmission tomogram, correct the measuring results and restore the image of the structure of the investigated object.

EFFECT: increases contrast of tomographic image of the inner structure of the controlled article.

1 dwg