Model for carrying out virtual navigation and assisting tumor tissue biopsy process being unable to be displayed ultrasonically

A navigation aid and tumor tissue technology, applied in the medical and health field, can solve problems such as inapplicable virtual navigation technology learning and training, inability to display tumor biopsy phantoms, and high elasticity of isolated tissues, and meet the low requirements for production conditions and improve Effect of density, good sound permeability

Inactive Publication Date: 2011-01-19
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some foreign scholars have used commercialized colloids to make virtual navigation-guided ultrasound phantoms that cannot display tumor biopsies, but such ultrasound phantoms are expensive and cannot be reused
Another foreign scholar used isolated bovine liver to make a model, but this model needs to use CT to evaluate the punctur

Method used

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  • Model for carrying out virtual navigation and assisting tumor tissue biopsy process being unable to be displayed ultrasonically
  • Model for carrying out virtual navigation and assisting tumor tissue biopsy process being unable to be displayed ultrasonically
  • Model for carrying out virtual navigation and assisting tumor tissue biopsy process being unable to be displayed ultrasonically

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Embodiment

[0034] Dissolve the dry product of carrageenan produced in Hainan in hot normal saline at a ratio of 1:50, and after fully dissolved, it becomes a carrageenan-normal saline solution for use.

[0035] Lipiodol, detergent, milk and carrageenan-normal saline solution were mixed at a ratio of 1:5:20:200, cooled and solidified to form a tumor glue. The solidified tumor glue was cut into 1 cubic centimeter glue block, put into carrageenan-normal saline solution, and after the solution was solidified, bamboo toothpicks were scattered and vertically inserted into the parenchyma to make a model.

[0036] The side of the rubber block marked with a toothpick is the head end for CT scanning. Import the CT image in Dicom format into the Mylab 90 ultrasonic instrument. The bamboo toothpick is high-density in the CT image and hyperechoic in the ultrasonic image. Use this as a positioning mark. After fusing the ultrasonic and CT images, use navigation assistance Perform tumor gel biopsy (eg,...

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Abstract

The invention belongs to the field of medical health and relates to a model for carrying out virtual navigation and assisting the tumor tissue biopsy process being unable to be displayed ultrasonically, and the model comprises tumor gelatin and substantial gelatin, wherein the substantial gelatin is made of carrageenan; and the tumor gelatin is formed by adding iodized oil, a surfactant and milk into the carrageenan. The model is prepared by using the substantial gelatin to warp one or more cut tumor gelatin blocks with the volume of 0.5-2cm3. The model can accurately simulate tumor tissues and peripheral normal tissues thereof which can not be displayed ultrasonically in the virtual navigation technology, effectively guide the virtual navigation technology to assist the positioning of the tumor tissues which can not be displayed ultrasonically during the biopsy, lead the tissue biopsy result obtained through the model to be accurate, lead the operation process to be simple and achieve the purposes of being applied in the virtual navigation technology for learning and training.

Description

technical field [0001] The invention belongs to the medical and health field, relates to the field of ultrasound-guided interventional therapy in ultrasound medicine, and in particular relates to a model used for virtual navigation-assisted tumor tissue biopsy process that cannot be displayed by ultrasound. Background technique [0002] Ultrasound-guided biopsy of liver tumor tissue is a commonly used technique in clinical practice. In this technique, ultrasound mainly plays a role in locating the tumor. The precondition for using ultrasound guidance is that ultrasound can display tumors. However, due to factors such as liver tissue background disorder and iso-echoic lesions, it is often encountered in practice that ultrasound cannot display tumor lesions. The imaging principle of CT is different from that of ultrasound. When ultrasound cannot show the tumor, CT can often show it. However, the current CT is static imaging, which is not suitable for guiding tissue biopsy in ...

Claims

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Application Information

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IPC IPC(8): G09B23/28
CPCG09B23/30G09B23/28
Inventor 李凯郑荣琴张奥华贺需旗袁树芳
Owner SUN YAT SEN UNIV
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