The role of ultrasonography in diagnosing hourglass-like fascicular constriction(s) of the anterior interosseous nerve

2021 ◽  
pp. 028418512110529
Author(s):  
Tiezheng Wang ◽  
Hengtao Qi ◽  
Dehua Wang ◽  
Zengtao Wang ◽  
Shougang Bao ◽  
...  
Keyword(s):  
Median Nerve ◽  
High Frequency ◽  
Imaging Method ◽  
Upper Arm ◽  
Non Invasive ◽  
The Past ◽  
Anterior Interosseous Nerve ◽  
High Frequency Ultrasonography ◽  
Electrophysiological Examination

Background In the past, the diagnosis of hourglass-like fascicular constriction(s) of the anterior interosseous nerve mostly depended on electrophysiological examination, by which the location could not be diagnosed. There are few studies on the evaluation of hourglass-like fascicular constriction(s) by ultrasonography. Purpose To evaluate the role of ultrasonography in the diagnosis of hourglass-like fascicular constriction(s) of the anterior interosseous nerve. Material and Methods A retrospective analysis of 12 patients with hourglass-like fascicular constriction(s) of the anterior interosseous nerve was carried out, and the characteristics of the high-frequency ultrasonographic images were summarized and compared with surgical exploration. Results The 12 cases of hourglass-like fascicular constriction(s) of the anterior interosseous nerve were all located in the median nerve of the distal upper arm, including nine cases of single hourglass-like fascicular constriction and three cases of multiple hourglass-like fascicular constrictions. High-frequency ultrasonography can accurately locate the hourglass-like fascicular constriction(s) of the anterior interosseous nerve and the extent of neuropathy. The ultrasonographic images of hourglass-like fascicular constriction(s) of the anterior interosseous nerve showed single or multiple hourglass-like change(s) in the median nerve of the distal upper arm. The nerve fascicles on both sides of the affected nerve with hourglass-like change thickened. Conclusions High-frequency ultrasonography could be a reliable, convenient, and non-invasive diagnostic imaging method for hourglass-like fascicular constriction(s) of the anterior interosseous nerve.

scholarly journals POS1388 ULTRASOUND FOR PANNICULITIS

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 977.1-977
Author(s):  
A. Potapova ◽  
O. Egorova ◽  
O. Alekseeva ◽  
A. Volkov ◽  
S. Radenska-Lopovok
Keyword(s):  
Dynamic Range ◽  
Subcutaneous Fat ◽  
Diagnostic Value ◽  
High Energy ◽  
Contralateral Side ◽  
Imaging Method ◽  
Non Invasive ◽  
M 12

Background:Ultrasound (US) is a non-invasive and safe imaging method that allows in vivo differentiation of the morphological structures of subcutaneous fat (SCF) tissue in in normal and pathology.Objectives:Reveal features of ultrasound changes in SCF in panniculitis (Pn).Methods:57 patients (f – 45, m - 12) aged 18 - 67 years with an initial diagnosis of erythema nodosum and a disease duration of 3.6 ± 1.4 years were examined. In addition to the general clinical examination, a computed tomography of the chest organs and a pathomorphological examination of a skin biopsy from the site of the node were performed. Ultrasound was performed on a MyLabTwice apparatus (ESAOTE, Italy) using a multi-frequency linear transducer (10-18 MHz) with the PD technique, the parameters of which were adapted for recording low-speed flows (PRF 300-600 Hz, low filter, dynamic range - 20-40 dB), the presence of vascularization was assessed not only in the affected area, but also on the contralateral side using high-energy Doppler.Results:33 patients were diagnosed with septal Pn (SPn), 24 - lobular Pn (LPn). In all cases, the diagnosis was verified by histological examination. Ultrasound made it possible to assess the thickness, echoicity and vascularization of the SCF. In 35 patients, significant thickening of the SCF was revealed (as compared to the contralateral side), of which in 14 cases with SPn, in 21 - with LPn. Significant diffuse thickening of the SCF with the contralateral side was observed in 18 patients, incl. in 12 (66%) patients with LPn. Limited thickening was more typical for SPn (73%). A significant increase in the echoicity of the SCF was noted in all forms of Pn. A “lobular” echo pattern with an anechogenic environment was observed in 25 patients, of which 18 (72%) had LPn. An increase in vascularization compared to the contralateral side was recorded in 30 cases (SPn-17, LPn-13).Conclusion:The obtained preliminary results indicate the important role of ultrasound in assessing the depth and prevalence of the inflammatory process at Pn. To clarify the diagnostic value of this method, further studies are needed on a larger sample of patients.Disclosure of Interests:None declared

scholarly journals The Role of microRNAs in the Regulation of Apoptosis in Lung Cancer and Its Application in Cancer Treatment

2014 ◽  
Vol 2014 ◽  
pp. 1-19 ◽  
Author(s):  
Norahayu Othman ◽  
Noor Hasima Nagoor
Keyword(s):  
Lung Cancer ◽  
Cancer Progression ◽  
High Frequency ◽  
Tumor Suppressor Genes ◽  
Molecular Mechanisms ◽  
Lung Carcinogenesis ◽  
The Past ◽  
Late Stage Diagnosis ◽  
Anticancer Treatment

Lung cancer remains to be one of the most common and serious types of cancer worldwide. While treatment is available, the survival rate of this cancer is still critically low due to late stage diagnosis and high frequency of drug resistance, thus highlighting the pressing need for a greater understanding of the molecular mechanisms involved in lung carcinogenesis. Studies in the past years have evidenced that microRNAs (miRNAs) are critical players in the regulation of various biological functions, including apoptosis, which is a process frequently evaded in cancer progression. Recently, miRNAs were demonstrated to possess proapoptotic or antiapoptotic abilities through the targeting of oncogenes or tumor suppressor genes. This review examines the involvement of miRNAs in the apoptotic process of lung cancer and will also touch on the promising evidence supporting the role of miRNAs in regulating sensitivity to anticancer treatment.

The Application of Ultra-High-Frequency Ultrasound in Dermatology and Wound Management

2020 ◽  
Vol 19 (4) ◽  
pp. 334-340
Author(s):  
Rossana Izzetti ◽  
Teresa Oranges ◽  
Agata Janowska ◽  
Mario Gabriele ◽  
Filippo Graziani ◽  
...  
Keyword(s):  
High Frequency ◽  
Diagnostic Techniques ◽  
Diagnostic Workup ◽  
Wound Management ◽  
High Frequency Ultrasound ◽  
Ultra High Frequency ◽  
Promising Tool ◽  
Ulcerative Lesions ◽  
High Frequency Ultrasonography

The management of lower extremity wounds is frequently performed by means of clinical examination, representing a challenge for the clinician due to the various conditions that can potentially enter differential diagnosis. Several diagnostic techniques are available in the dermatologist’s arsenal as a support to diagnosis confirmation, including dermoscopy and ultrasonography. Recently, a novel ultrasonographic technique involving the use of ultra-high ultrasound frequencies has entered the scene, and appears a promising tool in the diagnostic workup of skin ulcerative lesions. The focus of this review is to discuss the potential role of ultra-high-frequency ultrasonography in the diagnostic workup of wounds in the light of the current applications of the technique.

The Application Research of Secondary Attack Tactics in Freestyle Wrestling Sports

2017 ◽  
Vol 14 (1) ◽  
pp. 74-78
Author(s):  
Xiaoyan Sui
Keyword(s):  
High Frequency ◽  
Elite Athletes ◽  
Application Research ◽  
Related Research ◽  
The Past ◽  
Important Link ◽  
Good For ◽  
Single Technique ◽  
At Home

First of all, through the analysis to the characteristics of secondary attack of the Chinese wrestling athletes in the game, I do some preparation for analysing the technical differences of the wrestling athletes at home and abroad. This is good for shortening the differences in related research between the wrestlers at home and powerful elite athletes at abroad. Secondly, this study can highlight the position and role of the secondary attack in the wrestling sports. Game experience in the past has shown that secondary attack in wrestling sports is a kind of technique with high frequency in success. Therefore, the study of the secondary attack can stimulate the coaches and athletes to the importance of this kind of technique, and to improve training in the wrestling for the second attack. In addition, the practice has proved that at the contemporary wrestling competition is increasingly fierce both at home and abroad, and the use of a single technique is not enough to win the game. The study of the secondary attack will be one of the important link of wrestling technique.

The role of MIBG scintigraphy in the management of a case of metastatic glomus jugulare tumour

1996 ◽  
Vol 110 (4) ◽  
pp. 373-375 ◽  
Author(s):  
E. Nilssen ◽  
P. J. Wormald
Keyword(s):  
Case Report ◽  
Mibg Scintigraphy ◽  
Non Invasive ◽  
Glomus Jugulare ◽  
The Past ◽  
Metastatic Lesions ◽  
Scanning Technique ◽  
Isotope Scanning ◽  
Glomus Jugulare Tumour

AbstractGlomus jugulare tumours with metastases are rare as the diagnosis of metastases in this condition can be difficult.In the past this diagnosis has been made on histology of the metastatic lesions which were identified on clinical grounds. This is one of the reasons why there have been only 20 reported cases in the literature up to 1990 (Johnstone et al., 1990). This case report examines the role of meta-iodobenzylguanidine (MIBG) scintigraphy in the diagnosis of metastases. MIBG scintigraphy is an injected radionucleotide isotope scanning technique which is cheap, non-invasive, sensitive as well as being a specific investigation for identifying sites of ectopic neuroendocrine tissue. It may also have a role in the treatment of these tumours.

scholarly journals Practical use of High-Resolution 20 MHz Ultrasonography in Dermatovenerology

2016 ◽  
Vol 16 (3) ◽  
pp. 22-31
Author(s):  
A Kozarova ◽  
E Minarikova ◽  
T Pappova
Keyword(s):  
High Frequency ◽  
Visual Information ◽  
Diagnostic Procedure ◽  
Skin Diseases ◽  
Invasive Procedure ◽  
Thickness Measurement ◽  
Imaging Method ◽  
Excellent Correlation ◽  
Skin Tumours ◽  
Non Invasive

Abstract High-frequency skin ultrasonography using Dermascan C, manufactured by Cortex Technology, is an important part of modern diagnostic procedure of various skin diseases. It has been used in dermatology since 1979, when it was first used for the measurement of cutaneous thickness. Ultrasonography is a universal, painless, low-risk and non-invasive procedure that can easily be performed and repeated. It provides real-time visual information about the processes in the skin. This technique has grown to become frequent imaging method in dermatology. Skin ultrasonography is usually applied in the assessment of skin tumours, inflammatory or fibrosing skin diseases. The main application of ultrasonography in dermatovenerology is a preoperative thickness measurement of malignant melanoma. There is an excellent correlation between ultrasonographic and histological measurements of melanomas thickness. Moreover, information about the lesion quality and the inner structure can be obtained. In this article authors present the possibility of using high-frequency 20 MHz ultrasonography in dermatovenerology.

scholarly journals High-Frequency Ultrasonography and Evaporimetry in Non-invasive Evaluation of the Nail Unit

2021 ◽  
Vol 8 ◽  
Author(s):  
Marta Szymoniak-Lipska ◽  
Adriana Polańska ◽  
Dorota Jenerowicz ◽  
Adam Lipski ◽  
Ryszard Żaba ◽  
...  
Keyword(s):  
High Frequency ◽  
Complex Structure ◽  
Plate Thickness ◽  
Nail Plate ◽  
Structure And Function ◽  
Dominant Hand ◽  
Entire Study ◽  
Non Invasive ◽  
High Frequency Ultrasonography ◽  
And Function

Background: The nail unit (NU) is a complex structure that performs a number of functions, including protection, defense, manipulation, and palpation. Non-invasive research methods can facilitate the recognition of NU structure and function. Evaporimetry and HF-USG due to their availability of equipment and low research costs seem to be particularly noteworthy, but so far have been assessed to a limited extent. The aim of the presented study was to check the usefulness of TOWL and HF-USG in examination of NU.Materials and Methods: A total of 58 volunteers aged 25–65 years (mean age: 41 ± 10.16 years) were qualified for the study. The subjects did not present symptoms of clinically evident onychopathy and did not suffer from any dermatoses associated with lesions occurring within the NU. Additionally, the patients did not suffer from systemic diseases that could affect NU (including heart, lung, and endocrine diseases). In all volunteers, the measurement of TOWL and 20 MHz ultrasonography [high-frequency ultrasonography (HF-USG)] with the special emphasis on determination of nail plate thickness were performed.Results: Analysis of 464 HF-USG images revealed that the nail plate presented as two hyperechoic, parallel streaks (railway sign) with a linear hypoechoic middle layer between them. Matrix was visualized as a hypoechoic structure with blurred boundaries, mostly within the fourth and fifth fingers and more often in women. We found statistically significant correlations between the type of a finger and the thickness of the nail plate both in the entire study group and taking into account gender. In the dominant hand, the results were r = −0.341; p < 0.001; r = −0.417, p < 0.001; and r = 0.337; p = 0.001 (for the whole group, for women, and for men, respectively). In the non-dominant hand, the results were r = −0.465; p < 0.001; r = −0.493, p < 0.01; and r = −0.503; p < 0.01 (for the whole group, for women, and for men, respectively). There were statistically significant differences in the thickness of the nail plates of the corresponding types of fingers between female and male NUs. Statistically significant correlations were found between the type of a finger and the TOWL value in the whole group and taking into account gender (p < 0.05), except for the non-dominant hand in men. There were no statistically significant differences in the TOWL values of the corresponding types of fingers between male and female NUs (p > 0.05). There was no statistically significant correlation between the TOWL value and the nail plate thickness in any of the tested NUs, apart from the one statistically significant correlation in nd5 (r = 0.390, p = 0.021).Conclusions: To sum up, non-invasive methods, such as HF-USG and TOWL, enable assessment of the NU and are useful in examination of its structure and function. HF-USG shows characteristic elements of NUs that can be distinguished because of differences in their echogenicity. The thickness of the nail plate and TOWL depend on the type of finger, and show a relationship with gender.

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