Imaging of the Salivary Glands

Division of Neuroradiology, Department of Radiology, University of Michigan Health System, Ann Arbor, MI.
Seminars in roentgenology (Impact Factor: 0.71). 01/2013; 48(1):65-74. DOI: 10.1053/
Source: PubMed

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    ABSTRACT: Objective: To evaluate the dynamic microvascularization of focal salivary gland lesions by contrast-enhanced ultrasound (CEUS) and Color Doppler sonography. Materials and methods: One hundred and sixty-eight patients with 183 major salivary gland lesions (mean age, 56 years; age range, 12-83 years) underwent gray-scale ultrasonography (US), Color Doppler (CD) and CEUS. The CD and CEUS patterns were classified into three types (scores 0-3). Combined score grades were calculated based on the CD and CEUS pattern scores. The time-intensity curve (TIC) parameters of CEUS were then analyzed. Sensitivity, specificity, negative predictive value and positive predictive value of combined score grades were also calculated. Results: Among all the lesions, there were 161 in parotid gland, 22 in submandibular gland and 157 lesions were benign and 26 were malignant. For score grades (combined CEUS patterns with CD types), scores 1-2 were graded as benign; scores 3-4 were graded as indetermination-suspicious benign or malignant and scores 5-6 were graded as malignant.score 5-6 and score 1-2 indicated 24 (92.3%) and 135 (85.9%) malignant and benign lesions confirmed pathologically, respectively. The sensitivity and negative predicted value of combined score grades for malignant lesions were 92.3% and 98.5%, respectively. In addition, TIC analysis indicates that PI and AUC in malignant lesions were higher than those in benign lesions (p = 0.04 and 0.02, respectively). Conclusion: The combined score grade could be a useful method to assess the macro-and micro-vascularization and to differentiated diagnose benign and malignant lesions in major salivary glands.
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    ABSTRACT: This review of radioiodine sialadenitis covers molecular mechanisms, demographics, and analysis of quality of life. Animal and human research addressing salivary gland damage from I131 therapy is reported, and supplemented with relevant studies addressing the effect of external beam therapy. An illustrative case example identifies abnormalities in the histopathology associated with radioiodine sialadenitis. Approaches to preventing and treating radioiodine sialadenitis are discussed.
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    ABSTRACT: Positron emission tomography-computed tomography (PET/CT) with fluorine-18-fluorodeoxy-D-glucose (FDG) has evolved from a research modality to an invaluable tool in head and neck cancer imaging. However, interpretation of FDG PET/CT studies may be difficult due to the inherently complex anatomical landmarks, certain physiological variants and unusual patterns of high FDG uptake in the head and neck. The purpose of this article is to provide a comprehensive approach to key imaging features and interpretation pitfalls of FDG-PET/CT of the head and neck and how to avoid them.
    Full-text · Article · Aug 2014 · Insights into Imaging