Temat: radiofrequency - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The application of needle radiofrequency for the reduction of acne scars: a case report
Autorzy:: Pagacz, K.
Chilicka, K.
Powiązania:: https://bibliotekanauki.pl/articles/2088355.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Opolski. Instytut Nauk o Zdrowiu
Tematy:: acne fulminans
scars
needle radiofrequency
Opis:: Background: Acne fulminans can leaveunsightly scars that can have a detrimental effect on a person’s ability to function in society, resulting in a deterioration in the overall quality of life of these patients. Scientific research shows that problems with self-esteemmay lower a person’s quality of life, making them reluctant to interact with other people.This, in turn, may lead to depression and, in extreme cases, to suicide. For people who suffer from acne fulminans, this is an extremely serious problem.This is compounded by the fact that even if they spend much of their life fighting acne, ultimately successfully, they still may be left with the visual effects of the disease, like scars. Aim of the study: The aim of the paper is to investigate how a series of six needle radiofrequency treatments will affect, and potentially shallow, the acne scars. Material and methods: The analysis was conducted on the basis of an interview, photographic documentation of the patient and skin diagnosis using the NatiAnalyzer device. The case report was based on the medical history, photographic documentation and skin diagnosis (using the Nati Skin Analyzer), of a 28-year-old female patient who had suffered from acne fulminans during her adolescence. The effectiveness of the needle radiofrequency treatment was then analyzed. Case report: A 28-year-old female patient who hadstruggled with skin eruptions caused by acne fulminans since the age of 15 underwent an examination. The lesions were located on her entire face which resulted in deep scars. The patient used a series of six needle radiofrequency treatments along with ampoules containing active ingredients. Treatments were performed once a month. Conclusions: As evaluated using Goodman and Baron’s scar scale, the scars appear to have shallowed. Additionally, the patient’s self-esteem increased.
Źródło:: Medical Science Pulse; 2019, 13, 3; 50-53
2544-1558
2544-1620
Pojawia się w:: Medical Science Pulse
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Zastosowanie bipolarnej termoterapii śródmiąższowej w leczeniu przerostów małżowin nosowych
Autorzy:: Łuczaj, Jarosław
Rogowski, Marek
Powiązania:: https://bibliotekanauki.pl/articles/1398855.pdf
Data publikacji:: 2007
Wydawca:: Index Copernicus International
Tematy:: hypertrophic rhinitis
bipolar radiofrequency therapy
Opis:: Disturbance of nasal airflow occurs in about 30% of human population. Turbinate hypertrophy is frequently the base of many nasal obturative diseases. The aim of this study was to determine short- term and long term effects of the radiofrequency therapy (RFT) for patients with turbinate hypertrophy. Forty- one patients with inferior turbinate hypertrophy (19 females and 22 males) were enrolled in this study prospectively. The examination included: rhinoscopy, subiective visual analogue scale (VAS) score, in which a patient described his symptoms in points from 0, (always very good nasal airflow) to 10 points (always total obstruction) and anterior rhinomanometry. The clinical assessment was before radiofrequency-turbinectomy and within the days 7 to 25 afther this therapy (follow-up 1) and 12 months later (follow-up 2). RFT was performed in local anesthesia (1% Lidocain) by means of CELON. Rhinoscopy before RFT revealed turbinate hypertrophy, which was decreased in the follow-up examination. Subjective improvement of nasal airflow was felt by 39 patients (95%) at follow–up 1. At follow–up 2 fifteen patients (37%) reported a decreased nasal airflow when compared with the follow-up 1. Rhinomanometric results were better at follow-up 1 for the left side (p = 0,0003), the right side (p = 0,0002) and both sides altogether (p = 0,0001). The improvement continued at follow-up 2 for the left side (p = 0,0004), the right side (p = 0,001) and both sides (p = 0,001) when compared with rhinomanometry before RFT. There were not statistically significant differences between the rhinomanometric results at follow–up 1 and follow-up 2. Bipolar radiofrequency thermal ablation is an effective method for the therapy of turbinate hypertrophy.
Źródło:: Polish Journal of Otolaryngology; 2007, 61, 3; 290-294
0030-6657
2300-8423
Pojawia się w:: Polish Journal of Otolaryngology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Mathematical modeling of radiofrequency ablation during open-heart surgery
Autorzy:: Stasiuk, Yurii
Vitaliy, Maksymenko
Sychyk, Maryna
Powiązania:: https://bibliotekanauki.pl/articles/140353.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: arrhythmia
coagulation
heart
modeling
radiofrequency ablation
resistive heating
Opis:: In this article a three-dimensional mathematical model of radiofrequency ablation during open-heart surgery is presented. It was developed to study temperature field distribution into myocardial tissue. This model uses an anatomically correct 3D model for the left atrium, obtained by magnetic resonance imaging (MRI) processing of a patient; takes into account thermoelectric characteristic differences depending on the area of electric current application; considers cooling by the air flow. An ex-vivo experiment on the pig’s heart was performed where the depth of myocardium tissue damage was measured for the model validation. It was shown that the deviation of the model data from the experiment is within the limits of instrumental measurement error. The developed model is proposed to be used for heart ablation procedures planning, or new equipment development.
Źródło:: Archives of Electrical Engineering; 2020, 69, 2; 423-431
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Survey of Radio Navigation Systems
Autorzy:: Gilski, P.
Stefański, J.
Powiązania:: https://bibliotekanauki.pl/articles/227025.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: radio navigation
radio communication
satellite navigation systems
radiofrequency identification
Opis:: At present, there is a growing demand for radio navigation systems, ranging from pedestrian navigation to consumer behavior analysis. These systems have been successfully used in many applications and have become very popular in recent years. In this paper we present a review of selected wireless positioning solutions operating in both indoor and outdoor environments. We describe different positioning techniques, methods, systems, as well as information processing mechanisms.
Źródło:: International Journal of Electronics and Telecommunications; 2015, 61, 1; 43-48
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Interdisciplinary interventional and physiotherapy management of facet joint syndrome
Autorzy:: Broda, Maciej
Miler, Julia
Jankowski, Konrad
Rogowski, Bartosz
Krakowiak, Mateusz
Sokal, Paweł
Powiązania:: https://bibliotekanauki.pl/articles/24987721.pdf
Data publikacji:: 2023-07-11
Wydawca:: Gdański Uniwersytet Medyczny
Tematy:: Low-back pain
Facet joint syndrome
Radiofrequency facets denervation
physiotherapy
Opis:: Low back-pain is the most common pain syndrome. Radiofrequency facet denervation (RFD) is a minimally invasive method of treatment of chronic low back pain caused by facet joint syndrome. In this procedure electric current with frequency of radio waves are used to cause thermal injury to a small branch nerve that innervates painful facets. There are numerous studies confirming the effectiveness of this therapy. A good outcome of RFD can be sustained by appropriate and regular exercise. The aim of this article is to recommend such a program of exercises focused on strengthening the muscles and improving stabilization of the lumbar spine.
Źródło:: European Journal of Translational and Clinical Medicine; 2023, 6, 2; 78-84
2657-3148
2657-3156
Pojawia się w:: European Journal of Translational and Clinical Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Changes in tympanic temperature during the exposure to electromagnetic fields emitted by mobile phone
Autorzy:: Bortkiewicz, Alicja
Gadzicka, Elżbieta
Szymczak, Wiesław
Zmyślony, Marek
Powiązania:: https://bibliotekanauki.pl/articles/2180098.pdf
Data publikacji:: 2012-06-01
Wydawca:: Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:: radiofrequency radiation
microwave radiation
thermoregulation
physiological reaction to electromagnetic fields
Opis:: Objective: Mobile phones generate microwave radiation which is absorbed by exposed tissue and converted into heat. It may cause detrimental health effects. The aim of the experiment was to check if exposure to EMF emitted by mobile phone influenced the tympanic temperature. Material and Methods: Human volunteer study was performed on ten healthy young men, aged 22.1±4.7 years, examined three times: 1. on a day with 2×60 min of no exposure (sham day), 2. on a day with continuous, 60 min exposure and 60 min of no exposure, 3. on a day with intermittent exposure (4×15 min “on” and 4×15 min “off”). Exposure was generated by mobile phone (frequency 900 MHz, SAR 1.23 W/kg). The study was double-blind, performed under controlled conditions (at 24°C and 70% humidity). The tympanic temperature (Tty) was monitored every 10 sec by a thermistor probe placed close to the aural canal membrane in the ear opposite the one in contact with mobile phone (contralateral position). Multivariate repeated-measures analysis of variance was used to calculate the results. Results: The mean Tty in the whole group during continuous exposure was significantly higher than during sham exposure (p = 0.0001). During intermittent exposure the temperature was lower than during sham day (difference was up to 0.11°C). Within an hour after continuous exposure, Tty was higher by 0.03°C and after intermittent exposure Tty was lower by 0.18°C in comparison with sham day. Two hours after exposure Tty was significantly lower (p = 0.0001) than after sham exposure (0.06°C and 0.26°C respectively). The trends in Tty during experiment differed significantly in relation to exposure conditions (p < 0.05). Conclusions: The results of this analysis indicate that the physiological response to EMF exposure from mobile phone was mostly related to type of exposure (continuous or intermittent).
Źródło:: International Journal of Occupational Medicine and Environmental Health; 2012, 25, 2; 145-150
1232-1087
1896-494X
Pojawia się w:: International Journal of Occupational Medicine and Environmental Health
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Wykorzystanie właściwości elektrycznych komórek nowotworowych do monitorowania termoablacji
Using electrical properties of tumor in the termoablation monitoring
Autorzy:: Szuflitowska, B.
Powiązania:: https://bibliotekanauki.pl/articles/262133.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki. Katedra Inżynierii Biomedycznej
Tematy:: konduktywność
guz wątroby
termoablacja
symulacja
conductivity
liver tumour
radiofrequency thermal ablation
simulation
Opis:: Badania opisane w pracy dotyczą konduktywności i przenikalności elektrycznej tkanek w aspekcie termoablacji prądem wysokiej częstotliwości. Ablacja elektryczna jest jedną z metod leczenia nieresekcyjnych guzów wątroby. Wzrost konduktywności jest zwykle skorelowany z typem nowotworu i jego stadium. W artykule zaprezentowano symulację zabiegu w zależności od zastosowanego napięcia i wartości konduktywności tkanek nowotworowych.
The influence of the electrical conductivity and dielectric permittivity of biological tissues on the radiofrequency termoablation outcomes is discussed. Increase of conductivity correlates with the tumor type and stage. Radiofrequency thermal ablation is one of the methods used for the treatment of unresectable liver tumors. In this paper, the simulation of the ablation process depending of the applied voltage and the tumor conductivity, is presented.
Źródło:: Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna; 2015, 21, 2; 86-90
1234-5563
Pojawia się w:: Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Koncepcja zastosowania technologii RFID w transporcie drogowym
Analysis of Application Possibilities of RFID Technology in Road Transport
Autorzy:: Neumann, T.
Powiązania:: https://bibliotekanauki.pl/articles/342045.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Morski w Gdyni. Wydawnictwo Uniwersytetu Morskiego w Gdyni
Tematy:: identyfikacja radiowa
kontenery
transport
bezpieczeństwo transportu drogowego
radiofrequency identification
containers
transportation
road transport safety
Opis:: W artykule przedstawiono przykłady praktycznego zastosowania technologii RFID w transporcie drogowym oraz zaproponowano rozwiązania systemowe wspomagające zarządzanie procesem transportu. Omówiono zasady działania tych systemów oraz wykazano korzyści wynikające z ich zastosowania.
The paper presents examples of practical use of RFID technology in road transport and there are also proposed solutions to help manage the transport process. The principles of operation of these systems have been discussed and the benefits of using them have been demonstrated.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Gdyni; 2017, 102; 44-60
1644-1818
2451-2486
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Gdyni
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Study on the distribution of SAR and temperature in human brain during radio-frequency cosmetic treatment
Autorzy:: Qi, Xinzhe
Lu, Mai
Powiązania:: https://bibliotekanauki.pl/articles/1841322.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: electromagnetic exposure
human head model
ICNIRP guidelines
radiofrequency cosmetic instruments
safety assessment
ekspozycja elektromagnetyczna
model ludzkiej głowy
wytyczne ICNIRP
ocena bezpieczeństwa
Opis:: This paper established a radio-frequency electrode model and human head modelused in RF cosmetic instruments. The distribution of electric field strength, a specific absorption rate (SAR), and temperature distribution in the human brain at 1 MHz and 6 MHz were studied and the results compared with the International Commission on Non-ionizing Radiation Protection (ICNIRP) guidelines. The results showed that under those two frequencies the maximum value of electric field strength in the human brain was 1.52 V/mand it was about 5.4% of the ICNIRP basic restrictions, the maximum SAR in human brain was about 2.21×10−3W/kg, which was far less than 2 W/kg of ICNIRP basic restrictions, the maximum temperature of the human brain was 37.6 located in the wounded skin, which was the same as the normal temperature 37. Since all the results were within the ICNIRP basic restrictions, the electromagnetic exposure generated by the RF cosmetic electrode will not pose a threat to the human health.
Źródło:: Archives of Electrical Engineering; 2021, 70, 1; 115-127
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Bipolar pulsed radiofrequency neuromodulation of median nerve for treatment of carpal tunnel syndrome – a preliminary study
Neuromodulacja bipolarna nerwu pośrodkowego za pomocą pulsacyjnego prądu o częstotliwości radiowej w leczeniu zespołu cieśni nadgarstka – doniesienie wstępne
Autorzy:: Krzywda, Adam
Wypych-Ślusarska, Agata
Krupa-Kotara, Karolina
Oleksiuk, Klaudia
Głogowska-Ligus, Joanna
Skrzypek, Michał
Słowiński, Jerzy L.
Powiązania:: https://bibliotekanauki.pl/articles/1806833.pdf
Data publikacji:: 2021-10-27
Wydawca:: Śląski Uniwersytet Medyczny w Katowicach
Tematy:: bipolar neuromodulation
carpal tunnel syndrome
median nerve
pulsed radiofrequency
neuromodulacja bipolarna
zespół cieśni nadgarstka
nerw pośrodkowy
prąd pulsacyjny o częstotliwości radiowej
Opis:: INTRODUCTION: The results of direct surgical release of the median nerve in patients with carpal tunnel syndrome are frequently far from being satisfactory. Aim of the presented study is to assess the early results of bipolar pulsed radiofrequency (PRF) neuromodulation of the median nerve (MN) for treatment of carpal tunnel syndrome (CTS). MATERIAL AND METHODS: Fifteen adult patients with CTS (10 women and 5 men, mean age 58.5 years) were treated. The bipolar technique of neuromodulation was applied, with confirmation of the correct electrode position by neurophysiological examination. The study protocol included the Boston Carpal Tunnel Questionnaire (BCTQ), Numerical Rating Scale (NRS) for pain assessment and tip pinch strength assessment performed before neuromodulation as well as 4 and 12 weeks after treatment. Moreover, the sensory nerve conduction velocity (SNCV) was assessed before and 12 weeks after the intervention. RESULTS: A significant improvement in symptom severity (33.53 ± 8.25 at the baseline vs. 18.33 ± 11.06 and 25.67 ± 12.39 at 4 and 12 weeks) and functional status (21.0 ± 5.79 vs. 12.07 ± 7.20 and 17.73 ± 9.09) BCTQ subscores, as well as tip pinch strength (3.39 ± 1.68 vs. 5.86 ± 1.98 and 4.93 ± 2.22) were observed. A reduction in pain and improvement in SNCV were also found, but did not reach statistical significance. CONCLUSIONS: Bipolar PRF neuromodulation of MN is a promising therapeutic tool for patients with CTS and could potentially be an alternative to direct surgical release of MN. A longer follow-up period is required to assess the longevity of clinical improvement after the treatment.
WSTĘP: Wyniki chirurgicznego odbarczenia nerwu pośrodkowego u części chorych z zespołem cieśni nadgarstka są niezadowalające. Celem pracy jest ocena wczesnych wyników leczenia zespołu cieśni nadgarstka (carpal tunnel syn-drome – CTS) za pomocą bipolarnej neuromodulacji nerwu pośrodkowego (median nerve – MN) z użyciem prądu o częstotliwości radiowej w trybie pulsacyjnym (pulsed radiofrequency – PRF). MATERIAŁ I METODY: Leczeniu poddano 15 dorosłych pacjentów z CTS (10 kobiet i 5 mężczyzn, średni wiek 58,5 roku). Zastosowano technikę bipolarnej neuromodulacji z użyciem prądu PRF. Prawidłowość położenia elektrod potwierdzano neurofizjologicznie. Protokół badania składał się z kwestionariusza objawów zespołu cieśni nadgarstka (Boston Carpal Tunnel Questionnaire – BCTQ), skali numerycznej NRS (Numerical Rating Scale) dla oceny bólu oraz oceny siły mięśniowej przed neuromodulacją oraz 4 i 12 tygodni po leczeniu. Ponadto oceniano szybkość przewodnictwa czuciowego w nerwie pośrodkowym (sensory nerve conduction velocity – SNCV) przed i 12 tygodni po interwencji. WYNIKI: Stwierdzono znamienną poprawę w zakresie podskal BCTQ dotyczących ciężkości objawów (33,53 ± 8,25 przed zabiegiem vs. 18,33 ± 11,06 i 25,67 ± 12,39 po upływie 4 i 12 tygodni od zabiegu) oraz stanu czynnościowego (21,0 ± 5,79 vs. 12,07 ± 7,20 i 17,73 ± 9,09), a także poprawę siły mięśniowej (3,39 ± 1,68 vs. 5,86 ± 1,98 i 4,93 ± 2,22). Ponadto stwierdzono redukcję bólu i poprawę SNCV, jednak parametry te nie osiągnęły znamienności statystycznej. WNIOSKI: Neuromodulacja nerwu pośrodkowego za pomocą prądu PRF przeprowadzona techniką bipolarną jest obiecującą metodą leczenia pacjentów z CTS i może być alternatywą dla chirurgicznego uwolnienia nerwu pośrodkowego. Dla oceny trwałości poprawy klinicznej po zastosowanym leczeniu konieczny będzie dłuższy okres obserwacji.
Źródło:: Annales Academiae Medicae Silesiensis; 2021, 75; 107-110
1734-025X
Pojawia się w:: Annales Academiae Medicae Silesiensis
Dostawca treści:: Biblioteka Nauki

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