Monitoring parotid gland tumors with a new perfusion software for contrast-enhanced ultrasound

2014 ◽  
Vol 58 (1) ◽  
pp. 261-269 ◽  
Author(s):  
Laura V. Klotz ◽  
Michael Ingrisch ◽  
Martin E. Eichhorn ◽  
Olivier Niemoeller ◽  
Vanessa Siedek ◽  
...  
Keyword(s):  
Parotid Gland ◽  
Contrast Enhanced Ultrasound ◽  
Parotid Gland Tumors ◽  
Contrast Enhanced

Perfusion characteristics of parotid gland tumors evaluated by contrast-enhanced ultrasound

2013 ◽  
Vol 82 (12) ◽  
pp. 2227-2232 ◽  
Author(s):  
Laura V. Klotz ◽  
Robert Gürkov ◽  
Martin E. Eichhorn ◽  
Vanessa Siedek ◽  
Eike Krause ◽  
...  
Keyword(s):  
Parotid Gland ◽  
Contrast Enhanced Ultrasound ◽  
Parotid Gland Tumors ◽  
Contrast Enhanced

scholarly journals Ultrasonography techniques in the preoperative diagnosis of parotid gland tumors – an updated review of the literature

2020 ◽  
Author(s):  
Sebastian Stoia ◽  
Grigore Băciuț ◽  
Manuela Lenghel ◽  
Radu Badea ◽  
Mihaela Băciuț ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Parotid Gland ◽  
Preoperative Diagnosis ◽  
Complete Characterization ◽  
Contrast Enhanced Ultrasound ◽  
Parotid Gland Tumors ◽  
Parotid Tumors ◽  
Superficial Lobe ◽  
Contrast Enhanced ◽  
Conventional Ultrasound

Preoperative diagnosis of parotid tumors plays a crucial role in selecting and planning the surgical treatment. Ultrasound (US) with its modern techniques can contribute to the differential diagnosis of parotid tumors. This paper aims to achieve a comprehensive review of the ultrasound techniques used in the differential diagnosis of parotid tumors, based on the latest literature data. Considering that most parotid gland tumors are located in the superficial lobe, US is frequently the first imaging technique used for the diagnosis of parotid tumors. Sonoelastography can provide additional data on the elasticity of parotid tumors, but there is an overlap between malignant and benign parotid tumors parameters. Contrast-enhanced ultrasound adds value to conventional ultrasound and allows a more complete characterization of parotid tumors. Many authors have reported promising results using contrast-enhanced ultrasound in the differential diagnosis of parotid tumors. Multiparametric ultrasound with a careful and systematic approach usually allows an accurate differential diagnosis of parotid tumors.

Differentiation of Parotid Gland Tumors with Contrast-Enhanced Ultrasound

2009 ◽  
Vol 182 (02) ◽  
pp. 155-162 ◽  
Author(s):  
T. Fischer ◽  
C. Paschen ◽  
T. Slowinski ◽  
A. Alkhameri ◽  
J. Berl ◽  
...  
Keyword(s):  
Parotid Gland ◽  
Contrast Enhanced Ultrasound ◽  
Parotid Gland Tumors ◽  
Contrast Enhanced

scholarly journals Histogram analysis of dynamic contrast-enhanced magnetic resonance imaging in the differential diagnosis of parotid tumors

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Shiyu Xiang ◽  
Jiliang Ren ◽  
Zhipeng Xia ◽  
Ying Yuan ◽  
Xiaofeng Tao
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Parotid Gland ◽  
Benign Tumors ◽  
Resonance Imaging ◽  
Dce Mri ◽  
Dynamic Contrast Enhanced ◽  
Parotid Gland Tumors ◽  
Parotid Tumors ◽  
Contrast Enhanced

Abstract Objective Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) histograms were used to investigate whether their parameters can distinguish between benign and malignant parotid gland tumors and further differentiate tumor subgroups. Materials and methods A total of 117 patients (32 malignant and 85 benign) who had undergone DCE-MRI for pretreatment evaluation were retrospectively included. Histogram parameters including mean, median, entropy, skewness, kurtosis and 10th, 90th percentiles were calculated from time to peak (TTP) (s), wash in rate (WIR) (l/s), wash out rate (WOR) (l/s), and maximum relative enhancement (MRE) (%) mono-exponential models. The Mann–Whitney U test was used to compare the differences between the benign and malignant groups. The diagnostic value of each significant parameter was determined on Receiver operating characteristic (ROC) analysis. Multivariate stepwise logistic regression analysis was used to identify the independent predictors of the different tumor groups. Results For both the benign and malignant groups and the comparisons among the subgroups, the parameters of TTP and MRE showed better performance among the various parameters. WOR can be used as an indicator to distinguish Warthin’s tumors from other tumors. Warthin’s tumors showed significantly lower values on 10th MRE and significantly higher values on skewness TTP and 10th WOR, and the combination of 10th MRE, skewness TTP and 10th WOR showed optimal diagnostic performance (AUC, 0.971) and provided 93.12% sensitivity and 96.70% specificity. After Warthin’s tumors were removed from among the benign tumors, malignant parotid tumors showed significantly lower values on the 10th TTP (AUC, 0.847; sensitivity 90.62%; specificity 69.09%; P < 0.05) and higher values on skewness MRE (AUC, 0.777; sensitivity 71.87%; specificity 76.36%; P < 0.05). Conclusion DCE-MRI histogram parameters, especially TTP and MRE parameters, show promise as effective indicators for identifying and classifying parotid tumors. Entropy TTP and kurtosis MRE were found to be independent differentiating variables for malignant parotid gland tumors. The 10th WOR can be used as an indicator to distinguish Warthin’s tumors from other tumors.

scholarly journals Percutaneous drainage of a parotid gland abscess under contrast-enhanced ultrasound guidance: A case report

Ultrasound ◽  
2018 ◽  
Vol 26 (3) ◽  
pp. 182-186
Author(s):  
Sean Scattergood ◽  
Stephen Moore ◽  
Andrew Prior ◽  
Gibran T Yusuf ◽  
Paul S Sidhu
Keyword(s):  
Parotid Gland ◽  
Percutaneous Drainage ◽  
Ultrasound Guidance ◽  
Surgical Intervention ◽  
Ultrasound Examination ◽  
Contrast Enhanced Ultrasound ◽  
Ultrasound Guided ◽  
Contrast Enhanced ◽  
Co Morbidity ◽  
Warthin’S Tumour

A parotid gland abscess is uncommon and if not responding to conservative management, requires surgical intervention. However, surgery is invasive with the risk of complicating facial nerve damage and possible poor cosmetic outcome. We present a case of a parotid gland abscess in association with an underlying Warthin’s tumour requiring percutaneous drainage, as patient co-morbidity precluded a safe surgical approach. Percutaneous drainage was aided by a contrast-enhanced ultrasound examination, which permitted delineation of the fluid aspects of the collection from the underlying tumour and allowed successful percutaneous ultrasound-guided aspiration without complication.

scholarly journals Comparative Study of Qualitative and Quantitative Analyses of Contrast-Enhanced Ultrasound and the Diagnostic Value of B-Mode and Color Doppler for Common Benign Tumors in the Parotid Gland

2021 ◽  
Vol 11 ◽  
Author(s):  
Meiying Yan ◽  
Dong Xu ◽  
Liyu Chen ◽  
Lingyan Zhou
Keyword(s):  
Parotid Gland ◽  
Color Doppler ◽  
Mean Transit Time ◽  
Area Under The Curve ◽  
Diagnostic Value ◽  
Benign Tumors ◽  
Contrast Enhanced Ultrasound ◽  
Qualitative And Quantitative ◽  
Contrast Enhanced ◽  
Quantitative Analyses

PurposeTo preliminarily identify three common benign parotid gland tumors: pleomorphic adenomas (PA), Warthin tumors (WT), and basal cell adenomas (BCA) by qualitative and quantitative analyses using contrast-enhanced ultrasound (CEUS).MethodsPreoperative images of parotid gland masses were analyzed, including 129 cases of ultrasonography (US) and color Doppler sonography (CDS) and 110 cases of qualitative and quantitative CEUS. The diagnosis was confirmed by postsurgical pathology outcomes.ResultsPA presented low and heterogeneous enhancement and echo-free area, whereas most WT and BCA presented with high and relatively homogeneous enhancement. Compared with WT and BCA groups, a “slow in” pattern was more common in the PA group and a “slow out” pattern was more frequently noted in the WT group than in the PA and BCA groups. The unique features of qualitative CEUS in the PA group enable distinguishing PA from the 2 other groups. The further distinction among the groups was made based on quantitative parameters of time-intensity curves (TICs), which revealed that the mean peak intensity (PI), mean transit time (MTT), the area under the curve (AUC), and time from peak to one half (HT) exhibited significant differences. ROC analysis was next applied to determine the optimal cutoff points to predict the diagnostic tendency among the groups. When the rising slope (RS) was &gt;2.145, the possibility of BCA was greater than WT.ConclusionsCEUS ultrasound is of significant value in the differential diagnosis of the 3 common benign parotid gland masses.

Contrast-enhanced color Doppler sonography of parotid gland tumors

2003 ◽  
Vol 260 (6) ◽  
pp. 344-348 ◽  
Author(s):  
Helmut Steinhart ◽  
Johannes Zenk ◽  
Kirsten Sprang ◽  
Allessandro Bozzato ◽  
Heinrich Iro
Keyword(s):  
Parotid Gland ◽  
Doppler Sonography ◽  
Color Doppler ◽  
Color Doppler Sonography ◽  
Parotid Gland Tumors ◽  
Contrast Enhanced
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