Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Determination of Physiotherapy Ultrasound Beam Quality Parameters From Images Derived Using Thermochromic Material (CROSBI ID 267853)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Žauhar, Gordana ; Smilović Radojčić, Đeni ; Kaliman, Zoran ; Schnurrer-Luke-Vrbanić, Tea ; Jurković, Slaven Determination of Physiotherapy Ultrasound Beam Quality Parameters From Images Derived Using Thermochromic Material // Ultrasonics, 99 (2019), 105943, 6. doi: 10.1016/j.ultras.2019.06.005

Podaci o odgovornosti

Žauhar, Gordana ; Smilović Radojčić, Đeni ; Kaliman, Zoran ; Schnurrer-Luke-Vrbanić, Tea ; Jurković, Slaven

engleski

Determination of Physiotherapy Ultrasound Beam Quality Parameters From Images Derived Using Thermochromic Material

The evaluation of the performance of nine physiotherapy ultrasound transducers used clinically was performed in the hospital environment using an acoustically absorbing thermocromic tile developed at the National Physical Laboratory (UK). The method consists of exposing an acoustic absorber tile, part of which contains a thermochromic pigment, to the ultrasonic beam, thereby forming an image of the intensity profile of the transducer. Images acquired using thermochromic materials were postprocessed in order to estimate effective radiating area (ERA) and beam nonuniformity ratio (BNR) for ultrasound transducers operating within the frequency range from 1.0 to 3.3 MHz, and nominal applied intensities in the range of 1-2 W/cm2. Results of our measurements have shown that thermocromic tile can be used for quality control of ultrasound transducers in the hospital environment. Experimental results show that proposed method can be used to distinguish highly non - uniform ultrasound beams with high value of BNR. Influence of exposure duration on obtained ERA and BNR values was also analysed. Our results show that values for ERA increase with insonation time, while BNR values decrease. In order to compare our results with theory we have estimated temperature rise in thermochromic material experimentally and compare it with theoretical prediction.

ultrasound therapy ; thermochromic material ; effective radiating area ; beam non - uniformity ratio

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

99

2019.

105943

6

objavljeno

0041-624X

1874-9968

10.1016/j.ultras.2019.06.005

Povezanost rada

Fizika, Interdisciplinarne prirodne znanosti

Poveznice
Indeksiranost