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Updated: Oct 2, 2025
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Published on: June 4, 2015
TMJ contrast enhancement in CBCT images using a new algorithm
María Florinda Otero1, Pablo García Tahoces2, Antonio Mera3
1Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain.
Abstract:
Magnetic resonance imaging (MRI) is considered the gold standard to reliably diagnose inflammation in the temporomandibular joint (TMJ) of patients with juvenile idiopathic arthritis (JIA). However, even MRI imaging is dependent on the familiarity of the radiologist with the normal appearance of the TMJ; therefore, new approaches are needed. Our purpose here is to improve imaging quality of cone beam computed tomography (CBCT) as a tool to help in the diagnosis of JIA in the TMJ. We have designed and applied a filter (the Stacking Enhancement Filter) over a stock of CBCT images from the TMJs of two patients with JIA. We then made a visual comparison of the results with archival images from MRI of the same patients, to show that the filter substantially improves the visual quality of the image. The work on the image contrast and the increase of the difference of appearance between tissues of different densities (all the anatomical structures that are present within the joint) leads to an improvement of the resulting images of the TMJ without the use of a chemical contrast agent. We conclude that CBCT could be used as a filter tool for the analysis of the TMJs affected by arthritis. Our image processing technique yields images that possible improve the range of use of CBCT.
Insights
Cone beam computed tomography (CBCT) can be enhanced using a new Stacking Enhancement Filter to improve imaging quality for diagnosing juvenile idiopathic arthritis (JIA) in the temporomandibular joint (TMJ). This technique offers a promising alternative to MRI for TMJ arthritis analysis.
Area of Science:
- Dentistry
- Radiology
- Medical Imaging
Background:
- Juvenile idiopathic arthritis (JIA) diagnosis in the temporomandibular joint (TMJ) often relies on MRI, which requires radiologist expertise.
- Limitations in MRI interpretation necessitate improved diagnostic tools for TMJ inflammation in JIA patients.
Observation:
- A novel Stacking Enhancement Filter was applied to cone beam computed tomography (CBCT) images of TMJs in JIA patients.
- The filter improved visual quality by enhancing tissue contrast without chemical agents.
Findings:
- CBCT images processed with the Stacking Enhancement Filter showed substantially improved visual quality compared to standard CBCT.
- The enhanced CBCT images facilitated better differentiation of anatomical structures within the TMJ.
Implications:
- CBCT, enhanced with the Stacking Enhancement Filter, shows potential as a valuable tool for diagnosing TMJ arthritis in JIA.
- This image processing technique may expand the diagnostic utility of CBCT in rheumatology and dentistry.
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