Application of thermovision in assessment of superficial tissue temperature changes under the influence of 1 MHz and 3 MHz ultrasounds wave

Abstract

Ultrasound wave is a physical method commonly used in the rehabilitation process. Biological effects of ultrasound wave are complex, and they have been subject of several studies for many years. It is assumed that ultrasound wave causes an increase in tissue temperature; however, some study results stay in opposition to this statement. Thermal imaging is a method that helps to determine, in a precise way, the temperature distribution of the tested body surface area, which allows us to verify whether ultrasound waves always have thermal effects. The aim of the study was to evaluate the differences in temperature distribution depicted by thermal imaging, after the use of ultrasonic waves with two different values of frequency (1 and 3 MHz) in the area of Achilles tendon. The study involved 50 healthy students group in which there were 28 women and 22 men. The average age in the group was 20.54 years (±1.09). All study participants underwent ultrasound treatment with two different values of frequency. Skin temperature of the tested area was recorded with the use of thermographic camera. Ultrasound wave was applied to the area of Achilles tendon. Each person had the procedure performed twice with a seven-day time interval. There were ultrasonic waves with a frequency of 1 MHz applied one time and then ultrasonic wave with a frequency of 3 MHz applied once for the second time. Paraffin oil was used as a coupling medium. The result of Student's t test showed a statistically significant difference in mean temperature values measured immediately after treatment (3.3341) and 5 min after the treatment (2.6037) for a frequency of 3 and 1 MHz. A comparison of temperature values for both frequencies 10 min after the treatment and 15 min after the treatment was not statistically relevant. The results of the studies indicate that only ultrasonic treatment at a frequency of 3 MHz has influence on an increase of surface temperature.

Thermographic imaging as alternative method in allergy diagnosis

“…Relatively low costs of infrared camera enhance its availability, and nowadays, it seems to be natural consequence of digital technology development. In recent years, applications of thermography as a noninvasive method have become more popular and can be even observed in different areas of sport medicine and science [17][18][19].…”

Short-Term Thermal Effect of Continuous Ultrasound from 3 MHz to 1 and 0.5 W/cm2 Applied to Gastrocnemius Muscle

“…Finally, for G3, an ultrasound placebo was used for 5 min, i.e., the equipment was kept on but no dosage was selected. The frequency of application was 3 MHz due to its superficial and local vascular effects [ 25 , 32 ]. The head was checked to make sure it was functioning properly and was calibrated.…”

“…The results show an increase in temperature after applying ultrasound using paraffin oil, while gel use shows a decrease in temperature. Similarly, Ratajczak and Boerner [ 25 ] evaluated thermal differences through thermography in the Achilles tendon after ultrasound application at 1 and 3 MHz. They used paraffin oil as a coupling medium, and their results show that there is a temperature increase with ultrasound applied at 3 MHz.…”

Evaluation of temperature values in mental foramen area in case of patients using removable partial dentures

“…The infrared thermovision is a reliable technique commonly used in the researches in the areas of physiotherapy and general medicine [2][3][4]. Few studies were performed, using the method in the area of dentistry and in dental prosthodontics particularly [5][6][7][8][9].…”