scholarly journals High-frequency ultrasound in the 21st century

2020 ◽  
Vol 20 (83) ◽  
pp. 233-241
Author(s):  
Robert Krzysztof Mlosek ◽  
◽  
Bartosz Migda ◽  
Michał Migda ◽  
◽  
...  
Keyword(s):  
High Frequency ◽  
Current Knowledge ◽  
Skin Tests ◽  
High Frequency Ultrasound ◽  
Focal Lesions ◽  
Aesthetic Medicine ◽  
Skin Imaging ◽  
Skin Ultrasound ◽  
High Frequency Ultrasonography ◽  
Frequency Ultrasound

The beginnings of skin ultrasound date back to about 50 years ago. However, the dynamic progress of skin ultrasound took place in the last twenty years, when the unprecedented development of computer technologies occurred, which resulted in the popularization of and easier access to modern ultrasound equipment. Skin tests can be performed with both classic scanners equipped with broadband transducers with a minimum frequency of 15 MHz, and specially dedicated skin systems with high-frequency scanners, which are equipped with mechanical transducers with a frequency of 20 MHz to up to 100 MHz. Owing to technologically advanced machines, ultrasonography has proved to be useful in many areas. The aim of this study was to present the current knowledge and possibilities of skin imaging using highfrequency ultrasonography. Te paper discusses technical aspects, types of devices available on the market, as well as methods for the analysis of ultrasound skin images and parameters useful in their interpretation. We also present current applications of skin ultrasound, with particular emphasis on dermatology and aesthetic medicine. In the field of dermatology, we discussed imaging of focal lesions as well as an assessment of pathologically changed skin and treatment monitoring. We also focused on the use of high-frequency ultrasonography in aesthetic medicine and cosmetology. The popularity of this method is constantly growing in these fields, and ultrasound is now used in everyday practice to assess the skin, plan and monitor procedures, as well as to treat potential complications. High-frequency ultrasonography is a highly effective method for skin evaluation, although still underappreciated in may fields. Further research is needed to standardize this modality, as well as to implement training for operators, and to popularize this imaging technique.

scholarly journals The use of high-frequency skin ultrasound in the diagnosis of lipodermatosclerosis

2020 ◽  
Vol 20 (83) ◽  
pp. 284-290
Author(s):  
Witold Woźniak ◽  
◽  
Anna Danowska ◽  
Robert K. Mlosek ◽  
◽  
...  
Keyword(s):  
High Frequency ◽  
Clinical Symptoms ◽  
Subcutaneous Tissue ◽  
Vascular Wall ◽  
High Frequency Ultrasound ◽  
Body Regions ◽  
Skin Ultrasound ◽  
The Mean ◽  
High Frequency Ultrasonography ◽  
Frequency Ultrasound

Introduction: Lipodermatosclerosis is a symptom of severe venous insufficiency, the diagnosis of which is based on the clinical picture. Although the histopathology of the skin and the subcutaneous tissue allows for the most reliable diagnosis, it is not recommended due to healing disorders. Aim: The aim of this study was to assess the usefulness of high-frequency ultrasound in the diagnosis of lipodermatosclerosis. Materials and methods: The study included 10 patients with lipodermatosclerosis who underwent Duplex Doppler ultrasound of lower limb veins, high-frequency ultrasound of the tibial skin, and radiography of the lower leg, all of which were analyzed in correlation with clinical symptoms. Results: The study group included 9 women and 1 man aged 39–81 years. Manifestations of lipodermatosclerosis were detected in 14 limbs. High-frequency ultrasound showed that the mean dermis thickness at the affected sites was 2.63 mm, and was significantly thicker compared to healthy skin (1.45 mm) (p = 0.00002). Higher echogenicity was detected in the affected body regions in 85.7% of cases for the skin and 92.9% of cases for the subcutaneous tissue. Subcutaneous and vascular wall calcifications were detected in 92.9% and 78.6% of cases, respectively. Fibrosis was observed in all limbs, and compression sonoelastography showed that the compliance of the subcutaneous tissue was lower than that of muscles. The border between the skin and the subcutaneous tissue was blurred in 57.1% of cases. Radiography revealed thickening of the affected skin regions in all limbs, with calcifications detected in 85.7% of cases. A blurred border between the skin and the subcutaneous tissue was observed in 35.7% of limbs. Conclusion: High-frequency ultrasonography of the skin and the subcutaneous tissue in the lower legs supported with radiological findings is highly useful in the diagnosis of lipodermatosclerosis.

High Frequency Ultrasound for High Resolution Skin Imaging

Frequenz ◽  
2001 ◽  
Vol 55 (1-2) ◽  
Author(s):  
Michael Vogt ◽  
Katharina Kaspar ◽  
Peter Altmeyer ◽  
Klaus Hoffmann ◽  
Stephan El Gammal
Keyword(s):  
High Resolution ◽  
High Frequency ◽  
High Frequency Ultrasound ◽  
Skin Imaging ◽  
Frequency Ultrasound

A New High Frequency Ultrasound Skin Imaging System: Imaging Properties and Clinical in Vivo Results

2007 ◽  
pp. 137-144 ◽  
Author(s):  
M. Vogt ◽  
R. Scharenberg ◽  
G. Moussa ◽  
M. Sand ◽  
K. Hoffmann ◽  
...  
Keyword(s):  
High Frequency ◽  
Imaging System ◽  
High Frequency Ultrasound ◽  
Skin Imaging ◽  
Imaging Properties ◽  
Frequency Ultrasound

scholarly journals Diagnosis of cervical plexus tumours by high-frequency ultrasonography

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Wenqing Gong ◽  
Jing Wang ◽  
Liwei Huang ◽  
Xu Yang ◽  
Dingzhang Chen ◽  
...  
Keyword(s):  
High Frequency ◽  
Imaging Data ◽  
High Frequency Ultrasound ◽  
Cervical Plexus ◽  
Atypical Symptoms ◽  
Magnetic Resonance Imaging Mri ◽  
High Frequency Ultrasonography ◽  
The Right ◽  
Normal Controls ◽  
Frequency Ultrasound

Abstract Background Cervical plexus (CP) tumours are difficult to diagnose because of atypical symptoms. This study aimed to summarize the features of a normal CP and CP tumours observed on high-frequency ultrasonography. Methods The ultrasound data of 11 CP tumour patients and 22 normal volunteers were collected. All 11 patients underwent magnetic resonance imaging (MRI), and 4 patients also underwent computed tomography (CT). The imaging data were compared with surgery and pathology data. Results The C7 vertebra and bifurcation of the carotid common artery (CCA) were useful anatomic markers for identifying the CP. In contrast to the C1 nerve (22.7%), the C2-4 nerves were well displayed and thinner than the brachial plexus (P < 0.05). CP tumours were more common in females (72.7%) and generally located at C4 (72.7%) on the right side (81.8%). Additionally, the nerve trunk in tumour patients was obviously wider than that in normal controls (7.49 ± 1.03 mm vs 2.67 ± 0.36 mm, P < 0.01). Compared with pathology, the diagnostic rates of CP tumours by MRI, CT and high-frequency ultrasound were 72.7% (8/11), 25% (1/4) and 90.9% (10/11), respectively. Conclusions The diagnosis of CP neuropathy is accurate and reliable by high-frequency ultrasound, and the C7 vertebra and bifurcation of the CCA are useful anatomic markers in CP ultrasonography.

scholarly journals High‐frequency ultrasound as a scientific tool for skin imaging analysis

2021 ◽  
Author(s):  
Mariane Massufero Vergilio ◽  
Silas Arandas Monteiro e Silva ◽  
Rodrigo Menezes Jales ◽  
Gislaine Ricci Leonardi
Keyword(s):  
High Frequency ◽  
Imaging Analysis ◽  
High Frequency Ultrasound ◽  
Skin Imaging ◽  
Scientific Tool ◽  
Frequency Ultrasound

Skin imaging with high frequency ultrasound — preliminary results

2000 ◽  
Vol 12 (1) ◽  
pp. 9-16 ◽  
Author(s):  
E Szymańska ◽  
Andrzej Nowicki ◽  
K Mlosek ◽  
J Litniewski ◽  
M Lewandowski ◽  
...  
Keyword(s):  
High Frequency ◽  
High Frequency Ultrasound ◽  
Preliminary Results ◽  
Skin Imaging ◽  
Frequency Ultrasound

scholarly journals Ultra-High-Frequency Ultrasound in the Evaluation of Paediatric Pilomatricoma Based on the Histopathologic Classification

2021 ◽  
Vol 8 ◽  
Author(s):  
Li Li ◽  
Jiaosheng Xu ◽  
Siwei Wang ◽  
Jun Yang
Keyword(s):  
High Frequency ◽  
High Frequency Ultrasound ◽  
Female Ratio ◽  
Ultra High Frequency ◽  
Common Features ◽  
Deep Dermis ◽  
Grey Scale ◽  
High Frequency Ultrasonography ◽  
Echogenic Foci ◽  
Frequency Ultrasound

Background: Pilomatricoma (PM) is one of the most common benign tumours in children. However, the inaccuracy of preoperative diagnosis and evaluation is high. Non-invasive examinations, including dermoscopy and ultrasound are helpful for diagnosing and evaluating PM. To date, ultra-high-frequency ultrasonographic features of PM have been rarely studied.Objective: We aimed to investigate the ultra-high frequency ultrasonographic features of PM in a large paediatric cohort and to determine the associations of these features with the clinical features of different histological subtypes of PM.Methods: This was a retrospective study. Patients who had both preoperative ultra-high-frequency ultrasonographic evaluation and pathological diagnosis of PM were enrolled. A series of infantile haemangiomas and cutaneous cysts during the same period were included as controls. Histological findings, including the stage, calcifying type, and ultrasonographic features of each lesion, were described.Results: A total of 133 patients with PM were included, and 147 PM lesions were analysed. The male-to-female ratio was 1:1.58, and the median age of onset was 91 (range: 10–188) months. On ultra-high-frequency ultrasonography, PM presented as heterogeneous (144/147, 98.0%), well-demarcated (143/147, 97.3%), and hypoechoic (126/147, 85.7%) tumours located between the deep dermis and subcutaneous tissue (139/147, 94.6%). The most common features were internal echogenic foci (135/147, 91.8%), hypoechoic rim (133/147, 90.5%), and posterior acoustic shadowing (94/147, 63.9%). Fourteen (9.5%) lesions were histologically categorized in the early stage, 58 (39.5%) in the fully developed stage, 65 (44.2%) in the early regressive stage and 10 (6.8%) in the late regressive stage. Three calcifying types, including scattered dots, clumps and arcs, were observed on histologic examination, which corresponded well with grey-scale imaging on ultra-high-frequency ultrasonography. Each calcifying type was significantly different in various histological stages (P = 0.001), among which scattered dots were mainly present in the early and fully developed stage and arc-shaped calcifying were present in the regressive stages. Calcification was observed in skin cysts, while there was more frequent posterior enhancement, less frequent posterior shadowing, and hypoechoic rim than PM. Haemangioma also presented as a hypoechoic tumour on grey-scale imaging. However, haemangioma was homogeneous and rarely calcifying.Conclusions: PM is a heterogeneous, well-demarcated, hypoechoic tumour located between the deep dermis and the subcutis on ultra-high-frequency ultrasonography. The most common features are internal echogenic foci (calcifying) and hypoechoic rim. Calcifying types can help in the staging of PM. Ultra-high-frequency ultrasound is a useful tool for the diagnosis and evaluation of PM.

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