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Production method of medical CT spiral bead die body

A production method and phantom technology, applied in the fields of application, medical science, and radiological diagnostic instruments, etc., can solve the problem of low positioning accuracy of steel balls, achieve improved detection results, avoid air bubbles, and increase the yield of good products

Pending Publication Date: 2020-12-25
CHAOYANG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the technical defects of the prior art, and provides a method for producing a medical CT spiral bead phantom, so as to solve the technical problem that the accuracy of steel ball positioning is low in the spiral bead phantom prepared by conventional methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for producing a medical CT helical bead phantom, comprising the following steps:

[0022] 1) process the plexiglass frit into several rings with equal inner diameters and outer diameters with a lathe, and the upper end surface and the lower end surface of the rings are horizontal planes;

[0023] 2) Open a circular blind hole on the upper end surface of the ring, insert steel balls into the circular blind hole, and then stack several rings along the same axis to form a tube. In the side wall, a number of circular blind holes are distributed along the helix, and the adjacent rings in the tube are bonded;

[0024] 3) Process the plexiglass frit into a tubular outer body with a lathe, the inner diameter of the tubular outer body is 2 to 3 mm larger than the outer diameter of the tubular object, and the tubular outer body is sleeved on the outside of the tubular object, so that The bottom surface of the tubular outer body and the bottom surface of the tubular obje...

Embodiment 2

[0028] A method for producing a medical CT helical bead phantom, comprising the following steps:

[0029] 1) process the plexiglass frit into several rings with equal inner diameters and outer diameters with a lathe, and the upper end surface and the lower end surface of the rings are horizontal planes;

[0030] 2) Open a circular blind hole on the upper end surface of the ring, insert steel balls into the circular blind hole, and then stack several rings along the same axis to form a tube. In the side wall, a number of circular blind holes are distributed along the helix, and the adjacent rings in the tube are bonded;

[0031] 3) Process the plexiglass frit into a tubular outer body with a lathe, the inner diameter of the tubular outer body is 2 to 3 mm larger than the outer diameter of the tubular object, and the tubular outer body is sleeved on the outside of the tubular object, so that The bottom surface of the tubular outer body and the bottom surface of the tubular obje...

Embodiment 3

[0034] A method for producing a medical CT helical bead phantom, comprising the following steps:

[0035] 1. Use a lathe to process the outer diameter of the inner ring according to the drawings;

[0036] 2. Use the machining center to make round holes, and the round holes are distributed in a spiral shape;

[0037] 3. Set the steel ball in the drilled hole, and do not miss it;

[0038] 4. The outer diameter of the outer diameter of the inner ring is 2-3 mm larger than that of the outer diameter of the inner ring.

[0039] 5. Seal the bottom of the jacket and the inner ring;

[0040] 6. Bond the inner ring and the middle of the jacket by polymerization;

[0041] 7. Processing dimensions and polishing.

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Abstract

The invention provides a production method of a medical CT spiral bead die body. According to the technical scheme, a processing method of integrated inlaying and forming of the die body and steel balls is abandoned. Specifically, a formed organic glass material block is processed into a plurality of ring-shaped objects with the equal inner diameters and the equal outer diameters through a lathe,then blind holes are formed in the surfaces of the ring-shaped objects, it is ensured that the blind holes are distributed along a spiral line when the ring-shaped objects are stacked, on the basis, the steel balls are directly embedded into the blind holes, and then the ring-shaped objects are stacked and bonded into a tubular whole body. Based on the principle, it can be ensured that the steel balls are accurately distributed in the die body along the spiral line, and meanwhile the problems of bubbles, cracks and the like caused by embedding of the steel balls in a polymerization process areavoided. The tubular die body formed through bonding is externally bonded with an outer sleeve, the bottom is sealed, and therefore, the medical CT spiral bead die body is obtained. By applying the production method, the yield can be remarkably increased, and a certain improvement effect is achieved on the detection effect of the medical CT spiral bead die body.

Description

technical field [0001] The invention relates to the technical field of CT detection phantoms, in particular to a method for producing medical CT spiral bead phantoms. Background technique [0002] CT is computerized tomography, which uses precisely collimated X-ray beams, γ-rays, ultrasonic waves, etc., together with highly sensitive detectors, to conduct cross-sectional scans one by one around a certain part of the human body. It has a fast scanning time, The image is clear and other characteristics, and can be used for the inspection of various diseases. [0003] The electronic control system and mechanical structure of CT equipment are very complex, and complex data processing software is also used. Therefore, there are many factors that affect the image quality. These factors change with time and the number of scans. To meet the due performance indicators, and the equipment can be kept in good condition during use, the medical and health department will use CT phantoms ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00A61B6/03
CPCA61B6/583A61B6/032
Inventor 孙朝阳
Owner CHAOYANG BIOTECH
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