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Reliability of Artificial Intelligence-Based Cone Beam Computed Tomography Integration with Digital Dental Images
Published on: February 23, 2024
The accuracy of CBCT in measuring jaws bone density
M Cassetta1, L V Stefanelli, S Di Carlo
1Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Italy. michele.cassetta@uniroma1.it
European Review for Medical and Pharmacological Sciences
|October 30, 2012
Summary
Cone-beam computed tomography (CBCT) bone density measurements are not absolute. Different radiation levels (8 mAs vs. 15 mAs) yield statistically significant differences in voxel values (VV), making CBCT unreliable for absolute bone density assessment.
Area of Science:
- Oral and Maxillofacial Radiology
- Medical Imaging Technology
Background:
- Cone-beam computed tomography (CBCT) is prevalent in maxillofacial imaging due to its high spatial resolution, contrast, and gray density range.
- CBCT offers dimensional accuracy comparable to conventional CT.
- Unlike CT, CBCT gray density values (voxel values, VV) are not absolute, posing challenges for quantitative analysis.
Purpose of the Study:
- To determine if varying CBCT radiation exposure levels (8 mAs vs. 15 mAs) result in statistically significant differences in bone density (gray density values, VV).
Main Methods:
- Ten dry human mandibles were scanned using CBCT at two radiation settings: 8 mAs and 15 mAs.
- CBCT images were precisely overlapped using specialized software and a radiographic template to compare identical anatomical regions.
- Voxel values (VV) representing gray density were quantified and compared between the two exposure groups (Group A: 8 mAs; Group B: 15 mAs).
Main Results:
- A statistically significant difference (p <= .05) was observed in the CBCT gray density values (VV) between the 8 mAs and 15 mAs exposure groups.
- The findings indicate that radiation dose impacts the quantitative gray density measurements obtained from CBCT.
Conclusions:
- CBCT is not a reliable tool for assessing absolute bone density in the jaws due to variations in gray density values (VV) influenced by exposure settings.
- Despite CBCT's advantages in lower radiation dose and cost, its current technology does not permit accurate quantitative bone density evaluation.
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