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The Scientific World Journal
Volume 2014 (2014), Article ID 256256, 6 pages
Clinical Study

Clinical Value of 99Tcm-MDP SPECT Bone Scintigraphy in the Diagnosis of Unilateral Condylar Hyperplasia

Department of Nuclear Medicine, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuchang, Wuhan, Hubei 430071, China

Received 21 February 2014; Revised 24 April 2014; Accepted 24 April 2014; Published 11 May 2014

Academic Editor: Alberto Cuocolo

Copyright © 2014 Bing Wen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. To investigate the clinical value of 99Tcm-MDP SPECT for the diagnosis of unilateral condylar hyperplasia (UCH). Methods. One hundred forty-nine patients who underwent mandibular 99Tcm-MDP SPECT between January 2009 and December 2012 were studied, including 105 cases that were clinically suspected of UCH and 44 comparable cases without UCH as a control group. Results. Increased bone activity was observed in the affected condyles for all UCH patients. In the UCH group, the relative percentage uptake on the affected side was 59% ( ), significantly higher than the 41% ( ) uptake on the contralateral side (P<0.001). Similarly, the condyle/skull ratio was significantly higher for the affected side ( ) than for the contralateral side ( , . No significant difference was found in the control group between the left and right condyles. Values for the sensitivity (95%), specificity (61%), positive (84.4%) and negative (84.6%) predictive values, and accuracy (84.5%) for 99Tcm-MDP SPECT in the diagnosis of UCH were calculated. However, for the hyperplastic condyle, no correlation was observed between the thickness of each cartilage layer and the relative uptake in the SPECT image. Conclusion. 99Tcm-MDP SPECT is accurate for diagnosing UCH and can provide a reference for treatment options.