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@article{2360040,
author = {Issa, Julien and Riad, Abanoub and Olszewski, Raphael and DyszkiewiczandKonwinska, Marta},
article_location = {Basel},
article_number = {10},
doi = {http://dx.doi.org/10.3390/jpm13101518},
keywords = {diagnostic imaging; X-rays; cone-beam computed tomography; mandibular canal; tomography},
language = {eng},
issn = {2075-4426},
journal = {Journal of Personalized Medicine},
title = {The Influence of Slice Thickness, Sharpness, and Contrast Adjustments on Inferior Alveolar Canal Segmentation on Cone-Beam Computed Tomography Scans: A Retrospective Study},
url = {https://www.mdpi.com/2075-4426/13/10/1518},
volume = {13},
year = {2023}
}
TY - JOUR
ID - 2360040
AU - Issa, Julien - Riad, Abanoub - Olszewski, Raphael - Dyszkiewicz-Konwinska, Marta
PY - 2023
TI - The Influence of Slice Thickness, Sharpness, and Contrast Adjustments on Inferior Alveolar Canal Segmentation on Cone-Beam Computed Tomography Scans: A Retrospective Study
JF - Journal of Personalized Medicine
VL - 13
IS - 10
SP - 1-11
EP - 1-11
PB - MDPI
SN - 20754426
KW - diagnostic imaging
KW - X-rays
KW - cone-beam computed tomography
KW - mandibular canal
KW - tomography
UR - https://www.mdpi.com/2075-4426/13/10/1518
N2 - This retrospective study aims to investigate the impact of cone-beam computed tomography (CBCT) viewing parameters such as contrast, slice thickness, and sharpness on the identification of the inferior alveolar nerve (IAC). A total of 25 CBCT scans, resulting in 50 IACs, were assessed by two investigators using a three-score system (good, average, and poor) on cross-sectional images. Slice thicknesses of 0.25 mm, 0.5 mm, and 1 mm were tested, along with varying sharpness (0, 6, 8, and 10) and contrast (0, 400, 800, and 1200) settings. The results were statistically analyzed to determine the optimal slice thickness for improved visibility of IAC, followed by evaluating the influence of sharpness and contrast using the optimal thickness. The identified parameters were then validated by performing semi-automated segmentation of the IACs and structure overlapping to evaluate the mean distance. Inter-rater and intra-rater reliability were assessed using Kappa statistics, and inferential statistics used Pearson's Chi-square test. Inter-rater and intra-rater reliability for all parameters were significant, ranging from 69% to 83%. A slice thickness of 0.25 mm showed consistently "good" visibility (80%). Sharpness values of zero and contrast values of 1200 also demonstrated high frequencies of "good" visibility. Overlap analysis resulted in an average mean distance of 0.295 mm and a standard deviation of 0.307 mm across all patients' sides. The study revealed that a slice thickness of 0.25 mm, zero sharpness value, and higher contrast value of 1200 improved the visibility and accuracy of IAC segmentation in CBCT scans. The individual patient's characteristics, such as anatomical variations, decreased bone density, and absence of canal walls cortication, should be considered when using these parameters.
ER -
ISSA, Julien, Abanoub RIAD, Raphael OLSZEWSKI and Marta DYSZKIEWICZ-KONWINSKA. The Influence of Slice Thickness, Sharpness, and Contrast Adjustments on Inferior Alveolar Canal Segmentation on Cone-Beam Computed Tomography Scans: A Retrospective Study. \textit{Journal of Personalized Medicine}. Basel: MDPI, 2023, vol.~13, No~10, p.~1-11. ISSN~2075-4426. Available from: https://dx.doi.org/10.3390/jpm13101518.
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