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KMID : 0357520100330030245
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Journal of Radiological Science and Technology
2010 Volume.33 No. 3 p.245 ~ p.252
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The Study on Ultrasound Physical Characteristic and Synthesis of Tissue Mimicking Materials Used New Materials
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Ma Sang-Chul
Kim Hwa-Sun
Ahn Young-Man
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Abstract
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This study analyzed speed of sound, impedance, attenuation coefficient in accordance with acoustic characteristic standard of body soft tissue corresponding with Annex DD of IEC standard 60601-2-37(2007) which is about tissue mimicking materials (TMM) synthesized by polyurethane as a main material and new type of n-type scatter materials. This study reached the following conclusion after analyzing and evaluating image characteristic with SONOACE 9900 c PRIME (MEDESON Co.) and brightness, maximum penetration with convex probe (2.5~5.0 MHz). When n-type scatter materials are increasingly synthesised 0~8% with prepolymer as a main material and polyol mixture as a catalyst, 1. The more scatter materials are increased, the more sound speed of TMM becomes closely similar to soft tissue. 2. The more scatter materials are decreased, the more acoustic impedance becomes closely similar to soft tissue. 3. The more scatter materials are increased, the more attenuation coefficient is increased. 4. The more scatter materials are increased, the more average brightness of images is increased, but there is threshold. 5. The maximum penetration becomes closely similar to soft tissue at the 6% TMM as a scatter material.
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KEYWORD
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Polyurethane, Scatter materials, Tissue mimicking materials, Convex probe, Maximum penetration
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