Influence of patient position and other inherent factors on image quality in two different cone beam computed tomography (CBCT) devices Ninita Lindfors,

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Influence of patient position and other inherent factors on image quality in two different cone beam computed tomography (CBCT) devices Ninita Lindfors, Henrik Lund, Hans Johansson, Annika Ekestubbe European Journal of Radiology Open Volume 4, Pages 132-137 (January 2017) DOI: 10.1016/j.ejro.2017.10.001 Copyright © 2017 The Author(s) Terms and Conditions

Fig. 1 Illustrates the difference in the phantom head position. European Journal of Radiology Open 2017 4, 132-137DOI: (10.1016/j.ejro.2017.10.001) Copyright © 2017 The Author(s) Terms and Conditions

Fig. 2 Illustrates the difference between the areas of the large FOV in (A) Accuitomo and (B) Veraviewepocs. The Veraview has a rouleaux shape that is more adjusted the shape of the jaws. European Journal of Radiology Open 2017 4, 132-137DOI: (10.1016/j.ejro.2017.10.001) Copyright © 2017 The Author(s) Terms and Conditions

Fig. 3 The setting of different regions of interest (ROIs). Hounsfield value (HU) represent the CT value used to calculate the CNR and deviation (DEV) represent the standard deviation (SD) value also used in the same formula. Unilateral settings in the small FOV (A) and bilaterally in the large FOV (B). European Journal of Radiology Open 2017 4, 132-137DOI: (10.1016/j.ejro.2017.10.001) Copyright © 2017 The Author(s) Terms and Conditions