VIRTUAL NAVIGATION ASSISTED BIOPSY MODEL FOR TUMOR TISSUE UNABLE TO BE DISPLAYED BY ULTRASONOGRAPHY

摘要

A virtual navigation assisted biopsy model for tumor tissue unable to be displayed by ultrasonography is provided. The model consists of tumor gelatin and substantial gelatin. The substantial gelatin is made of carrageenan. The tumor gelatin is made by adding iodized oil, surfactant and milk into carrageenan. The model is formed by allowing the substantial gelatin to envelop one or more cut tumor gelatin blocks with the volume of 0.5-2 cm3. The model can, in virtual navigation technology, realistically simulate tumor tissue which can not be displayed by ultrasonography, and surrounding normal tissue, and effectively lead the virtual navigation technology to in real time assist the positioning and biopsy of tumor tissue which cannot be displayed by ultrasonography. The model enables simple operation and accurate results, and is adapted for learning and training for virtual navigation technology.