| 摘要 |
An ultrasound phantom is provided which has ultrasound wave velocities, attenuation coefficients and scattering coefficients which closely mimic those of human tissue and which permits diagnostic ultrasound equipment to be accurately tested and calibrated on a continuing day-to-day basis. The phantom preferably includes a substantially air-tight enclosure or box, having therein a quantity of reticulated synthetic resin foam material and a salt water solution. The ultrasonic characteristics of the phantom are completely uniform, stable and reproduceable, can be varied at will by using different foam materials and/or liquids, and the phantom can be stored and used at room temperature without degradation thereof. Localized zones having different ultrasonic qualities for mimicking various normal and pathological tissues can also be provided by hollowed, cut-out regions within the foam material, with different inserts located within certain of the hollowed regions.
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