Abstract
Purpose
The purpose of this study was to (1) clarify the size and apparent diffusion coefficient (ADC) value of lymph nodes (LN) in each state in their quantitative evaluation diffusion-weighted imaging, and (2) to determine the diagnostic utility of size and ADC values in the quantitative evaluation of LNs using diffusion-weighted imaging.
Methods
This was a retrospective cohort study at our hospital conducted between April 2017 and March 2019. A total of 50 patients (20 men, 30 women) with 118 LNs, aged 34–90 years (mean age 61.18 years), undergoing magnetic resonance imaging examination were included in the study. The predictor variable was disease status. The primary outcome variable was the mean size and ADC values of the LNs. The other variables were age and sex. Data were analyzed using a Kruskal–Wallis test, and
hoc Mann–Whitney tests with Bonferroni adjustment and a receiver operating characteristic (ROC) curve. P < 0.05 was considered to indicate statistical significance.
Results
We analyzed the records of 50 patients (118 LNs) with and without osteomyelitis. Of these, 21 had acute osteomyelitis, and 16 had chronic osteomyelitis. The size and ADC values of LNs in the osteomyelitis group were significantly greater and higher, respectively, than those in the non-myelitis group (P < 0.01). ROC analysis revealed a cutoff short-axis size of 4.42 and 4.04 mm for lymphadenopathy caused by osteomyelitis, corresponding to levels IB and level II, respectively. Moreover, the ADC cutoff values for the same were 0.85 and 0.86, respectively.
Conclusion
The results suggest that size and ADC values are useful parameters for the quantitative evaluation of lymphadenopathy caused by osteomyelitis.
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Abbreviations
- ADC:
-
Apparent diffusion coefficient
- LN:
-
Lymph nodes
- ROC:
-
Receiver operating characteristic
- CT:
-
Computed tomography
- MRI:
-
Magnetic resonance imaging
- US:
-
Ultrasonography
- DWI:
-
Diffusion-weighted imaging
- FOV:
-
Field of view
- ROI:
-
Region of interest
- ICC:
-
Intraclass correlation coefficient
- AUC:
-
Area under the curve
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We designed and conducted a retrospective cohort study, which was approved by Nihon University ethics committee (EC19-011).
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Muraoka, H., Ito, K., Hirahara, N. et al. The diagnostic utility of size and apparent diffusion coefficient values for cervical lymph nodes in patients with osteomyelitis of the jaw bone. Oral Radiol 38, 192–198 (2022). https://doi.org/10.1007/s11282-021-00543-5
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DOI: https://doi.org/10.1007/s11282-021-00543-5