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Dentomaxillofacial Radiology, Vol 30, Issue 6 314-318, Copyright © 2001 by British Institute of Radiology

ARTICLES

Diagnostic value of dynamic magnetic resonance imaging for salivary gland diseases: a preliminary study

S. Suenaga, H. Indo and T. Noikura
Department of Dental Radiology, Kagoshima University Dental School, Kagoshima, Japan. suenaga@denta.hal.kagoshima-u.ac.jp

OBJECTIVES: To determine the diagnostic value of dynamic MR imaging for the differentiation between benign tumours, malignant tumours, and inflammatory lesions in the major salivary glands. METHODS: T1- and T2-weighted spin-echo and dynamic gadolinium-enhanced T1-weighted spin-echo imaging sequences were performed in 27 patients (28 salivary gland lesions). The enhancement curve patterns and tumour margins on dynamic MR imaging were analysed. RESULTS: All pleomorphic adenomas showed a continuous gradual or rapid increase in the enhancement pattern, whereas other benign tumours had a rapid or gradual enhancement-attenuation pattern. Malignant tumours generally showed a gradual enhancement-attenuation pattern. Inflammatory lesions showed a rapid or gradual enhancement-attenuation pattern. A well-defined margin was observed in all 13 (100%) benign tumours and three of six (50%) malignant tumours. CONCLUSIONS: Our study suggests that dynamic curve patterns and tumour margin appearance may help to differentiate between benign tumours, malignant tumours and inflammatory lesions.


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H Indo, S Suenaga, E Nozoe, N Nakamura, J Tanuma, I Semba, and H. Majima
Pleomorphic adenoma presenting low T2 signal-intensity on magnetic resonance imaging.
Dentomaxillofac. Radiol., September 1, 2006; 35(5): 380 - 382.
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