Abstract
. The article describes the basic computed tomography scan schemes for lengthy symmetric objects: continuous (discrete) rotation with a discrete linear movement; continuous (discrete) rotation with discrete linear movement to acquire 2D projection; continuous (discrete) linear movement with discrete rotation to acquire one–dimensional projection and continuous (discrete) rotation to acquire of 2D projection. The general method to calculate the scanning time is discussed in detail. It should be extracted the comparison principle to select a scanning scheme. This is because data are the same for all scanning schemes: the maximum energy of the X–ray radiation; the power of X–ray radiation source; the angle of the X-ray cone beam; the transverse dimension of a single detector; specified resolution and the maximum time, which is need to form one point of the original image and complies the number of registered photons). It demonstrates the possibilities of the above proposed method to compare the scanning schemes. Scanning object was a cylindrical object with the mass thickness is 4 g/cm2, the effective atomic number is 15 and length is 1300 mm. It analyzes data of scanning time and concludes about the efficiency of scanning schemes. It examines the productivity of all schemes and selects the effective one.
Highlights
The manufacturing of modern nuclear fuel (NF), according to a given level of functionality, safety and reliability, is impossible without the complex control of NF’s parameters
A change of the fuel elements design leads to the necessity of complex theoretical and experimental studies, analysis of the results which will allow make a conclusion about the possibility of CT scan usage for multi–parameter examination of the fuel elements
Basic CT Scan Schemes and Method for Calculation of Scanning Time Let us discuss all the most popular scanning schemes of lengthy symmetric objects, a cylindrical fuel element with diameter H and length L is presented as example
Summary
The manufacturing of modern nuclear fuel (NF), according to a given level of functionality, safety and reliability, is impossible without the complex control of NF’s parameters. Since the middle of 80s X– ray computed tomography method (CT scan) is used to control the fuel elements [1,2,3,4]. 2. Basic CT Scan Schemes and Method for Calculation of Scanning Time Let us discuss all the most popular scanning schemes of lengthy symmetric objects, a cylindrical fuel element with diameter H and length L is presented as example. Scheme 1: Figure 1 displays the scheme for the classical CT scan method. In this scheme the object rotates discretely or continuously around the axis and a set of one–dimensional projections are acquired. Scanning step should not exceed the size of the sensitive volume of the detector in the scanning direction d
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