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Differentiation of osteosarcoma from osteomyelitis using microarchitectural analysis on panoramic radiographs
Ji-Hun Jung1, Kyung-Hoe Huh2, Tae-Hoon Yong3
1Department of Oral and Maxillofacial Radiology, School of Dentistry and Dental Research Institute, Seoul National University, Daehak-ro 101, Jongro-gu, Seoul, 03080, Korea.
Scientific Reports
|July 19, 2022
Summary
Diagnosing osteosarcoma (OS) is challenging, often mistaken for osteomyelitis (OM). Analyzing trabecular bone structure using fractal dimensions and anisotropy can help differentiate these jaw conditions.
Area of Science:
- Oral and Maxillofacial Radiology
- Bone Microarchitecture Analysis
- Biomedical Imaging
Background:
- Osteosarcoma (OS) diagnosis is often delayed due to non-specific symptoms, frequently leading to misdiagnosis as osteomyelitis (OM).
- Distinguishing between OS and OM on initial presentation is critical for timely and appropriate patient management.
- Trabecular bone alterations are characteristic of bone pathologies, but their specific changes in OS and OM require detailed investigation.
Purpose of the Study:
- To evaluate the utility of microarchitectural analysis of trabecular bone on panoramic radiographs for differentiating jaw osteosarcoma (OS) from osteomyelitis (OM).
- To investigate differences in fractal dimensions (FDs) and degrees of anisotropy (DAs) between normal bone, OS-affected bone, and OM-affected bone.
Main Methods:
- Retrospective analysis of panoramic radiographs and CT images from 23 patients with OS and 40 patients with OM.
- Calculation of three microarchitectural parameters: box-counting FD, fast Fourier transform-based FD, and DA from regions of interest in trabecular bone.
- Statistical comparison of microarchitectural parameters between normal bone, OS lesions, and OM lesions.
Main Results:
- All three microarchitectural parameters (box-counting FD, FFT-based FD, DA) showed significant differences between normal bone and bone affected by OS or OM.
- Trabecular bone affected by both OS and OM exhibited increased complexity and isotropy compared to normal bone.
- A statistically significant difference in the degree of anisotropy (DA) was observed between OS and OM, with OS-affected bone being more isotropic.
Conclusions:
- Microarchitectural analysis of trabecular bone, particularly the degree of anisotropy (DA), shows promise for detecting OS-induced changes.
- DA analysis can aid in differentiating jaw osteosarcoma from osteomyelitis on radiographic imaging.
- This quantitative imaging approach may improve the diagnostic accuracy and speed for challenging bone pathologies.

