| Autor: |
El Shahat, Hazem M., Fahmy, Hadeer S., Gouhar, Ghada K. |
| Zdroj: |
Egyptian Journal of Radiology & Nuclear Medicine; Jun2013, Vol. 44 Issue 2, p203-207, 5p |
| Abstrakt: |
Abstract: Objective: This study aimed to evaluate the value of gadolinium-enhanced dynamic MR imaging for differentiating benign and malignant parotid gland tumors, and for characterizing the various histological types. Patients and methods: Non-enhanced T1-weighted (T1-W), fat-suppressed T2-weighted (T2-W), and gadolinium-enhanced fat-suppressed dynamic T1-weighted images were obtained preoperatively in 27 patients (28 parotid gland tumors), by using a 1.5 or 3 T MR imaging unit (GE, Signa Exite). The tumor margins and the enhancement curve patterns on dynamic MR imaging were analyzed. All patients underwent a parotidectomy with histopathologic analysis. Results: Pleomorphic adenomas depict a gradual enhancement pattern. Warthin’s tumors depict an early peak of enhancement and a high washout pattern. Malignant tumors depict an early peak of enhancement and a low washout pattern. Conclusion: Gadolinium-enhanced dynamic MR imaging improved the performance of MR imaging in differentiating benign from malignant parotid gland tumors and characterizing the different histological types of benign tumors. [Copyright &y& Elsevier] |
| Databáze: |
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