scholarly journals The diagnostic value of Superb Microvascular Imaging in identifying benign tumors of parotid gland

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Lihui Zhao ◽  
Yiran Mao ◽  
Jie Mu ◽  
Jing Zhao ◽  
Fangxuan Li ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Parotid Gland ◽  
Color Doppler ◽  
Benign Tumors ◽  
Color Doppler Flow Imaging ◽  
Cell Adenoma ◽  
Mixed Distribution ◽  
Superb Microvascular Imaging ◽  
Grade 3 ◽  
Microvascular Imaging

Abstract Background We compared the ultrasound features, superb microvascular imaging (SMI) and micro vessel density (MVD) of pleomorphic adenoma (PA), Warthin’s tumor (WT) and basal cell adenoma (BCA) to explore the clinic value of SMI in differential diagnosis of benign tumors of parotid gland. Methods The vascular distributions and grade by color doppler flow imaging (CDFI) and SMI, as well as vascular index (VI) of 249 parotid gland masses from 217 patients were analyzed. Results The internal echogenicity of BCA are more homogeneous in comparing with WT and PA(P < 0.05). By SMI, the vascular distribution and vascular grade in PA were mainly peripheral (33.1%) and avascular (25.7%), Grade 1 (27.8%) and Grade 0 (25.7%). WT were mainly central (31.3%) and mixed distribution (34.9%), in Grade 3 (37.3%) and Grade 2 (36.2%). BCA was mainly peripheral (33.3%) and mixed distribution (33.3%), in Grade 2 (33.3%) and Grade 3 (33.3%). The overall detection rate of SMI for vascular Grade 2 and 3 was significantly higher than that of CDFI (P < 0.05). Both VI and MVD were lowest in PA, highest in WT (P < 0.001). The VI by SMI was correlated with MVD (P < 0.001). The correlation index between vascular distribution and grade by SMI and MVD were significantly higher than CDFI. Conclusion SMI can provide low-velocity blood flow information, which is helpful for the differential diagnosis of common benign tumors of parotid gland, and is expected to be more widely used.

Application of Superb Microvascular Imaging in the Diagnosis of Vascular Erectile Dysfunction

2021 ◽  
Vol 11 (8) ◽  
pp. 2184-2188
Author(s):  
Jun Wu ◽  
Fan Jiang ◽  
Xiaofeng Lan
Keyword(s):  
Blood Flow ◽  
Erectile Dysfunction ◽  
Color Doppler ◽  
Peak Systolic Velocity ◽  
Hemodynamic Parameters ◽  
Color Doppler Flow Imaging ◽  
Diastolic Velocity ◽  
Superb Microvascular Imaging ◽  
The Difference ◽  
Microvascular Imaging

To compare the difference between superb microvascular imaging (SMI) and color doppler flow imaging (CDFI) on vascular grading and blood flow display rate of the penile cavernous artery of vascular erectile dysfunction (ED), and to evaluate the length of time to obtain blood flow spectrum. 68 patients with ED were preformed for the examination of SMI and CDFI. The difference between the two techniques on vascular grading and blood flow display rate were compared. Hemodynamic parameters, namely peak systolic velocity (PSV), end diastolic velocity (EDV), and resistant index (RI) and the length of time obtained blood flow spectrum were compared. SMI was more sensitive to assess vascular grading and blood flow display rate than CDFI (P < 0.05). Hemodynamic parameters (PSV, EDV, and RI) measured by SMI and CDFI were well correlated (r = 0.981, P < 0.001; r = 0.879, P < 0.001; r = 0.937, P < 0.001). The duration of time necessary obtained the spectrums of grade 3 and grade 4 blood flow was shorter than that of grade 1 and grade 2, and SMI was comparatively shorter than CDFI (P < 0.05). In conclusion, SMI detected the blood flow of the penile cavernous artery better and maked the examination time shorter than CDFI, which can be considered as a more effective technique to diagnose vascular ED.

scholarly journals Brooke-Spiegler Syndrome with Multiple Scalp Cylindromas and Bilateral Parotid Gland Adenomas

2012 ◽  
Vol 2012 ◽  
pp. 1-3 ◽  
Author(s):  
Peter Kalina ◽  
Rokea el-Azhary
Keyword(s):  
Soft Tissue ◽  
Parotid Gland ◽  
Basal Cell ◽  
Autosomal Dominant ◽  
Sweat Glands ◽  
Benign Tumors ◽  
Basal Cell Adenoma ◽  
Cell Adenoma ◽  
Rare Association ◽  
Turban Tumor

A 62-year-old female presented with numerous soft tissue lesions of her scalp and bilateral preauricular region. Several of these have been biopsied or removed with a diagnosis of cylindromas. Cylindromas are benign tumors with a differentiation towards apocrine sweat glands that increase in number and size throughout life. Multiple scalp cylindromas may coalesce and cover the entire scalp, resulting in the “turban tumor.” These are often associated with the autosomal dominant Brooke-Spiegler syndrome with coexistent facial trichoepitheliomas and spiradenomas. There is a very rare association between cylindromas and basal cell adenoma and adenocarcinoma of the parotid gland, with only 17 reported cases. Ours is the first CT demonstration of both the scalp and parotid gland findings in this uncommon situation.

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.

scholarly journals Superb microvascular imaging technique in depicting vascularity in focal liver lesions: more hypervascular supply patterns were depicted in hepatocellular carcinoma

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Fan Yang ◽  
Jing Zhao ◽  
Chunwei Liu ◽  
Yiran Mao ◽  
Jie Mu ◽  
...  
Keyword(s):  
Blood Flow ◽  
Color Doppler ◽  
Microvascular Blood Flow ◽  
Focal Liver Lesions ◽  
Liver Lesions ◽  
Flow Signal ◽  
Blood Flow Signal ◽  
Superb Microvascular Imaging ◽  
Malignant Lesions ◽  
Microvascular Imaging

Abstract Purpose To investigate the capacity of Superb Microvascular Imaging (SMI) to detect microvascular details and to explore the different SMI features in various focal liver lesions (FLLs) and the correlation between SMI and microvessel density (MVD). Method: Eighty-three liver lesions were enrolled in our study, including 35 hepatocellular carcinomas (HCCs) and 48 non-HCCs. All patients underwent color Doppler flow imaging (CDFI) and SMI examination and were categorized into subgroups according to Adler semiquantitative grading (grade 0–3) or the microvascular morphologic patterns (pattern a-f). The correlation between SMI blood flow signal percentage and MVD was assessed. Results Compared with CDFI, SMI detected more high-level blood flow signals (grade 2–3) and more hypervascular supply patterns (pattern e-f) in HCCs (p < 0.05). Furthermore, more hypervascular supply patterns and fewer hypovascular supply patterns were detected in HCC compared with non-HCC (p < 0.05). Based on Adler’s grading or microvascular morphologic patterns, the areas under the receiver operating characteristic curve were 0.696 and 0.760 for SMI, 0.583 and 0.563 for CDFI. The modality of “SMI-microvascular morphologic pattern” showed the best diagnostic performance. There was significant correlation between MVD and the SMI blood flow signal percentage (vascular index, VI) in malignant lesions (r = 0.675, p < 0.05). Conclusion SMI was superior to CDFI in detecting microvascular blood flow signals. More hypervascular supply patterns were depicted in HCC than in non-HCC, suggesting a promising diagnostic value for SMI in the differentiation between HCC and non-HCC. Meanwhile, we were the first to demonstrate that SMI blood flow signal percentage (VI) was correlated with MVD in malignant lesions.

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