CONICAL BEAM RECONSTITUTION ACHIEVED BY COMBINING AND USING CIRCULAR AND LINEAR ORBITS

摘要

PURPOSE: To provide a device and method for generating picture by which an accurate three-dimensional picture can be generated from conical beam data. CONSTITUTION: The radiation passed through a conical beam collimator 12 is received by means of a radiation detector, such as a gamma camera head 10, while the head 10 moves along circular and linear tracks. The data collected while the head 10 moves along circular tracks are stored in a memory 42c and transformed into a frequency area by means of a Fourier transforming means 50c and re-transformed into a spatial area by removing redundant data. The data collected during the linear tracks are stored in a memory 421. The linear track data are transformed into a frequency area and repeatedly filtered for removing redundant data by means of a filter function group. Each filter function corresponds to different lines in an inspection area. The slice data set of the filtered frequency area is again transformed into the spatial area and transferred to the central part of a spatial area memory.