CN2702271Y

CN2702271Y - Simulated locator detecting die body

Info

Publication number: CN2702271Y
Application number: CN 200420011189
Authority: CN
Inventors: 雷宏昌; 马长征; 陶金柱
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-30
Filing date: 2004-06-30
Publication date: 2005-05-25
Anticipated expiration: 2014-06-30

Abstract

The utility model relates to a simulated locator for detecting die body. A die body frame is composed of an upper body and a lower body, the transversal central position of the undersurface of the upper body and the upper surface of the lower body are provided with a plurality of unequal diameter hemispherical grooves arranged at intervals and mutually matched. A plurality of unequal diameter locating balls incapable of transmitting X-ray are arranged in a spherical cavity which is composed of two hemispherical grooves and the diameter of the hemispherical groove is corresponding to the diameter of the locating ball. In addition, two small balls with equal diameter to the locating ball are respectively arranged at the position that is in the vertical direction and adjacent to the upper body surface and the lower body surface of the one of the locating ball. A small ball with equal diameter is also arranged at the position that is adjacent to left side or right side of the upper body or the lower body, and the connecting line of the three small balls are composed of a right-angled triangle. The utility model has the advantages of simple structure, simple preparing process and high detecting precision.

Description

Radiotherapy simulative generator detects die body

Technical field

The utility model belongs to a kind of pick-up unit, particularly relates to a kind of pick-up unit that is used to detect centre deviations such as radiotherapy simulative generator.

Background technology

Medical radiotherapy simulative generator is to be used for determining the position of radiation therapy irradiation field and the x-ray radiation source of size before the radiation therapy, it is to utilize the visual not visible treatment beam of image X-ray beam imitation, position, the size and dimension of the irradiation field when drafting treatment, if misalignment will have a strong impact on the radiation therapy quality of tumour.The order of accuarcy of treatment irradiation field location is then depended on the mechanical property of radiotherapy simulative generator itself, so before coming into operation, need detect radiotherapy simulative generator.Present pick-up unit is a small cubes, its center is embedded with a roentgenopaque bead, each face center all accurately is embedded with crosshair, bead need be on the line point of crossing at six crosshair indication centers, difficulty of processing is very big, even is the thing that impossible accomplish to domestic organic glass processing factory.In addition, whether it off-centring such as can only detect greater than 1mm, as for then can not determine greater than what, obviously has the character that installation quality detects, and is not suitable for measurement verification.

Summary of the invention

The purpose of this utility model provides a kind of radiotherapy simulative generator simple in structure, that processing and fabricating convenient and accuracy of detection is high and detects die body.

For achieving the above object, the technical solution adopted in the utility model is: a kind of radiotherapy simulative generator detects die body, the die body frame is made up of upper body and lower body two parts, the transverse center position of upper body lower surface and lower body upper surface all is processed with the hemispherical groove that some intervals are provided with and the diameter of mutual coupling does not wait, and the different roentgenopaque place kick of some diameters is positioned in the spherical chamber of being formed with the spherical groove of the corresponding two halves of its diameter.

Described place kick has 7, and its diameter is respectively 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm.

Respectively be provided with a bead with this place kick equal diameters on the vertical line direction of a place kick therein and near upper body and lower body surface, in the upper body or lower body also be provided with the bead of an equal diameters near left side or right lateral surface place, make the line form right angle triangle of these three beads.

The utility model is no longer inlayed the accurate cross hair in position at six faces that detect die body, just in the built-in several roentgenopaque place kick of die body, therefore processing is very simple, and general organic glass processing factory all can make, and cost only is equivalent to 1/20th of external import price.Because the diameter of place kick has all passed through accurate measurement, and it is less that the radius of different place kick differs in twos, thereby the concrete numerical value of centre deviation such as not only can measure, and measuring error is easy to be controlled in the 0.25mm, meets the requirement of transmission of quantity value fully.The utility model also can be used to examine and determine the accuracy of frame, the therapeutic bed anglec of rotation.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of die body frame lower body.

Embodiment

As shown in Figure 1 and Figure 2, radiotherapy simulative generator detects the die body frame of die body to be made up of upper body 1 and lower body 2 two parts, and upper body and lower body are rectangular parallelepiped, bonds between two parts or fixes with other modes.The transverse center position of upper body lower surface and lower body upper surface all is processed with the hemispherical groove 3 that some intervals are provided with and the diameter of mutual coupling does not wait, per two mutually the hemispherical grooves of coupling form spherical chambeies, the different roentgenopaque place kick 4 of some diameters be positioned over the corresponding spherical chamber of its diameter in.Determine the place kick quantity that needs are provided with according to the requirement of accuracy of detection, the quantity of place kick is many more, and diameter difference between any two is more little, and accuracy of detection is high more.Place kick shown in Figure 1 has 7, and its diameter is respectively 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, and diameter difference between any two is 1mm, and measuring error can be controlled in the 0.25mm.In addition, respectively be provided with a bead with this place kick equal diameters on the vertical line direction of a place kick therein and near upper body and lower body surface, in the upper body or lower body also be provided with the bead of an equal diameters near left side or right lateral surface place, make the line form right angle triangle of these three beads.Among the figure be 2mm being respectively arranged with a diameter bead 5, the line form right angle triangle of these three beads near upper body upper surface, lower body lower surface and lower body left surface.The die body frame is made with organic glass, and place kick is a Metal Ball.

During detection, allow detect die body be placed on radiotherapy simulative generator etc. center and make radiotherapy simulative generator in running order, make frame and light hurdle around etc. the center do 360 ° of rotations, from display screen field of view crosshair in the size that waits spheroid that the center forms, compare with the place kick in the die body, with the diameter of definite above-mentioned formed spheroid, thus the mechanical property of judgement radiotherapy simulative generator.

Make the radiotherapy simulative generator frame be in 0 ° of position, one of them right-angle side of right-angle triangle in the module is overlapped with the central shaft of X line launched field, make the frame half-twist, observe the angle of central shaft and another right-angle side of right-angle triangle, thereby judge the accuracy of the radiotherapy simulative generator frame anglec of rotation.Thereby make the utility model not only can be used for centre deviations such as measurement, and can examine and determine the accuracy of frame, the therapeutic bed anglec of rotation again, enlarged functions of use of the present utility model.

Claims

1, a kind of radiotherapy simulative generator detects die body, comprise the die body frame, it is characterized in that, the die body frame is made up of upper body and lower body two parts, the transverse center position of upper body lower surface and lower body upper surface all is processed with the hemispherical groove that some intervals are provided with and the diameter of mutual coupling does not wait, and the different roentgenopaque place kick of some diameters is positioned in the spherical chamber of being formed with the spherical groove of the corresponding two halves of its diameter.

2, radiotherapy simulative generator as claimed in claim 1 detects die body, it is characterized in that described place kick has 7, and its diameter is respectively 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm.

3, radiotherapy simulative generator as claimed in claim 1 or 2 detects die body, it is characterized in that, respectively be provided with a bead with this place kick equal diameters on the vertical line direction of a place kick therein and near upper body and lower body surface, in the upper body or lower body also be provided with the bead of an equal diameters near left side or right lateral surface place, make the line form right angle triangle of these three beads.