Paraffin-Gel Tissue-Mimicking Material for Ultrasound-Guided Needle Biopsy Phantom
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- 作者：S铆lvio L. Vieira ; Theo Z. Pavan ; Jorge E. Junior ; Antonio A.O. Carneiro
- 关键词：Paraffin-gel waxes ; Carnauba wax ; Tissue-mimicking ; Breast phantoms ; Biopsy training ; Ultrasound imaging ; Elasticity
- 刊名：Ultrasound in Medicine and Biology
- 出版年：December, 2013
- 年：2013
- 卷：39
- 期：12
- 页码：2477-2484
- 全文大小：1001 K
文摘
Paraffin-gel waxes have been investigated as new soft tissue-mimicking materials for ultrasound-guided breast biopsy training. Breast phantoms were produced with a broad range of acoustical properties. The speed of sound for the phantoms ranged from 1425.4聽卤聽0.6 to 1480.3聽卤聽1.7聽m/s at room temperature. The attenuation coefficients were easily controlled between 0.32聽卤聽0.27聽dB/cm and 2.04聽卤聽0.65聽dB/cm at 7.5聽MHz, depending on聽the聽amount of carnauba wax added to the base material. The materials do not suffer dehydration and provide聽adequate needle penetration, with a Young's storage modulus varying between 14.7聽卤聽0.2聽kPa and 34.9聽卤聽0.3聽kPa. The phantom background material possesses long-term stability and can be employed in a supine position without changes in geometry. These results indicate that paraffin-gel waxes may be promising materials for training radiologists in ultrasound biopsy procedures.