Abstract
In the 3-dimensional display of images reconstructed using helical CT, the partial volume effect, which causes imaging distortion when scanning in the axial direction, is a common problem. In this study, evaluation of 3-dimensional reconstructed images was carried out under various scan and display conditions that changed the size of our original acrylic sphere. Imaging distortion in creased as slice thickness decreased, and decreased as slice width became smaller and table movement speed became faster. In addition, the image display conditions had large effect on 3-dimensional shape. These results show that the scanning conditions, purpose and organs must be considered in the clinical application of helical CT imaging.
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