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Evaluating bone remodeling by measuring Hounsfield units in a rabbit model of rhinosinusitis: is it superior to measuring bone thickness?
Author(s) -
Dong Yi,
Zhou Bing,
Huang Zhenxiao,
Huang Qian,
Cui Shunjiu,
Li Yunchuan,
Fan Erzhong,
Li Ying,
Wang Xinyan
Publication year - 2018
Publication title -
international forum of allergy and rhinology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.503
H-Index - 46
eISSN - 2042-6984
pISSN - 2042-6976
DOI - 10.1002/alr.22205
Subject(s) - medicine , hounsfield scale , receiver operating characteristic , bone remodeling , maxillary sinus , nuclear medicine , chronic rhinosinusitis , area under the curve , sinusitis , radiology , dentistry , computed tomography , surgery
Background The traditional method of evaluating bone remodeling in chronic rhinosinusitis is to measure bone thickness. The objective of this study was to determine the feasibility of measuring the computed tomography (CT) value in Hounsfield units (HU) as an method and explore whether it is superior to measuring bone thickness. Methods The study was a prospective animal trial. Twenty normal rabbits were included in the control group, and 60 rabbit models were inoculated with Staphylococcus aureus to induce rhinosinusitis. The rabbit models were divided into 3 groups according to the time of infection. All animals were euthanized after the CT exam. The samples were scored based on mucus and bone changes. The rabbits were divided into negative and positive groups according to whether bone remodeling was observed. We obtained diagnostic threshold values by measuring the bone thickness and HU of each rabbit's maxillary sinus and compared the values obtained using the 2 methods by calculating the area under the receiver operating characteristic curve (AUC). Results The AUC for the measured bone thickness was 0.838, the diagnostic threshold was 1.165 mm. The AUC for the measured HU value was 0.937, the diagnostic threshold was 904.5. The correlation coefficients were r 1 = 0.645 for the measured bone thickness and r 2 = 0.797 for the HU measurement (r 2 > r 1 ; p < 0.01). Conclusion Evaluating bone remodeling is feasible by measuring either the bone wall thickness or the CT value. However, using CT to evaluate the sinus bones in rabbits with rhinosinusitis appears to be a more valuable option.