By SEC Co.,Ltd
Helical CT is a method been studied actively from early 1990’s and the primary concept is Scanning Geometry (Single Slice CT) designed to reconstruct faster than Fan-beam CT using 1 line with line detector. For faster scan, however, it has evolved as MDCT(Multiline Detector CT) by increasing the number of Detector Line processed in 1 rotation to 2,4,16,32,128 and 320 lines. 3D Helical CT has many advantages such as very fast speed compared to Fan-beam CT and accurate reconstruction algorithm unlike Cone-beam CT. Also if the inspection object is long and cannot be in FOV, entire reconstruction of 3D volume is impossible but it is possible with Helical CT. Perfect 3D reconstruction is able in case of long product by using 3D MDCT Scanning algorithm developed by SEC. Figure below is 3D data constructed using out Helical reconstruction algorithm.
