Acoustic Characterisation of Konjac Glucomannan Gel as a Medical Phantom
| Autor: | Supar Rohani, Anis Nazihah Mat Daud, Rosly Jaafar |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010309 optics
Materials science 0103 physical sciences General Materials Science 02 engineering and technology Konjac glucomannan 021001 nanoscience & nanotechnology 0210 nano-technology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Imaging phantom Biomedical engineering |
| Zdroj: | Solid State Phenomena. 268:379-383 |
| ISSN: | 1662-9779 |
| DOI: | 10.4028/www.scientific.net/ssp.268.379 |
| Popis: | Acoustic properties are the main criteria to evaluate the compatibility of tested materials as a medical phantom. We determined the acoustic properties of konjac glucomannan (KGM) gel to verify its compatibility as a medical phantom. The acoustic properties measurement employed ultrasonic insertion technique and utilized two identical transducers of 5 MHz center frequencies. One KGM gel block with 5.62 mm thickness was used as sample to determine its longitudinal speed, acoustic impedance and attenuation coefficient at three different water temperatures; (21.5 ± 0.1), (22.5 ± 0.1) and (23.5 ± 0.1) °C. Findings indicated that its longitudinal speed and acoustic impedance increased from (1495 ± 1) to (1499 ± 1) m s-1 and (1.555 ± 0.001) to (1.559 ± 0.001) × 106 kg m-2 s-1 as the water temperature increased from (21.5 ± 0.1) to (23.5 ± 0.1) °C. It also indicated that its attenuation coefficient varied around (0.1303 ± 0.0107) to (0.1373 ± 0.0103) dB cm-1 with increasing water temperature. KGM gel is compatible to be a medical phantom since its acoustic properties are comparable to the acoustic properties of human soft tissue. |
| Databáze: | OpenAIRE |
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