Abstract:

Introduction and Purpose: Artifacts decrease image quality. In literature, the number of work related to the implant artefacts of titanium (Ti) and zirconium (Zr) is limited. The aim of this study is to evaluate and compare the effects of the ProMax Artefact Reduction Algorithm (AAA) on the artefacts created by Ti and Zr implants in the conic-ray computer tomography (KIBT) images with different drawing parameters. Method and Requirements: A Zr and a Ti implant were placed in the cattle cage. This bone was scanned with the ProMax 3D Mid KIBT device. The images were obtained in 70, 76, 80, 86 and 90 kVp, in 2 different voksel sizes (0.2 and 0.4 mm). AAA was made with and without use 20 screens. The images were transferred to the ImageJ program. The average grey value (GV) and the standard deviation (SD) are calculated with the contrast-bullying ratio (CNR). Statistical analysis used Pearson's correlation ratio, Student's t-test, ANOVA and multiple regression analysis tests. AAA has significantly reduced SD in both implant groups (p<0.001) and this reduction was higher for the Zr implant. A significant negative correlation between the algorithm activation and the SD in the kVp and Zr implant was observed (p<0.05). The GV and CNR values increased significantly in both the implant groups, and this increase was higher in the Zr group (p<0.001). CONTRIBUTION and RESULT: Zr disrupts KIBT images more than Ti. The AAA of the Promax device also improves the image quality in both implants and the effect on Zr implants is higher.

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