02005nab a2200241 i 4500 publ12271 20200319125510.0 171114s2015 hu o 0|| zxx d 2212-4403 10.1016/j.oooo.2014.12.009 doi 2848446 mtmt SZTE Publicatio Repozitórium hun zxx Plachtovics Márk The effect of calibration and detector temperature on the reconstructed cone beam computed tomography image quality [elektronikus dokumentum] : a study for the workflow of the iCAT Classic equipment / Plachtovics Márk Elsevier 2015 473-480 ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY 119 No. 4 OBJECTIVE: The image quality of the reconstructed dental cone beam computed tomography (CBCT) acquisition is strongly dependent on the characteristics of the applied detector. Some flat panel detector (FPD) types require a warming-up period (WUP) to achieve a steady-state temperature; and some of them, those that have a cesium iodide detector, may require a calibration process (CP) after each WUP. STUDY DESIGN: Quality-assurance phantom was used for the evaluation of image quality, including spatial accuracy and density response with and without WUP and CP using iCAT Classic equipment. RESULTS: The correlation between the measured gray values and the multidetector computed tomography (MDCT) values deviated slightly from linearity (defined by the 45-degree line). There was no detectable difference in the spatial accuracy of the four different scanning modes. CONCLUSIONS: Although the WUP is important to reach the required steady-state temperature, the CP has a greater effect on the image quality. Góczán János aut Nagy Katalin aut http://publicatio.bibl.u-szeged.hu/12271/1/2848446.pdf Dokumentum-elérés http://publicatio.bibl.u-szeged.hu/12271/7/_2848446.pdf Dokumentum-elérés