CN208552886U - Proton CT collimator system - Google Patents

Abstract

The utility model discloses a proton CT collimator system, including ion source, collimator, therapeutic bed, scintillator, and the therapeutic bed ring week is provided with fixed bracket；Contact slip ring is provided on the inside of the fixed bracket；The ion source and scintillator are respectively fixedly disposed on contact slip ring, and ion source and scintillator are oppositely arranged and rotate synchronously with diameter；The contact slip ring is rotated around therapeutic bed；Emit proton beam by ion source, beam monitoring instrument monitors proton beam, collimator be proton beam stream is filtered, moulding and run-home object, therapeutic bed support patient, when proton passes through target object arrival scintillator, scintillator absorbs the energy of proton beam and re-emits absorbed energy in the form of light, since the system of the utility model is using pen shape beam scanning, thus the utilization rate of proton beam is higher, ion source transmitting proton quantity it is lower, and improve at image accuracy.

Description

Proton CT collimator system

Technical field

The utility model belongs to medical instruments field, more particularly to a proton CT collimator system.

Background technique

Traditional x-ray CT is to be scanned with X-ray beam to the certain thickness level in human body portion, is received and is penetrated by detector The X-ray of the level after being changed into visible light, becomes electric signal from photoelectric conversion, then switch to count through analog/digital converter Word inputs computer disposal.After electronic computer handles data, so that it may photograph the section or vertical that human body is examined position The image of body finds the tiny lesion at any position in vivo.

Compared with the photon beams such as the X-ray used in the traditional radiation therapy, the sharpest edges of proton therapeutic are to subtract The radiation of few normal tissue, while sufficient dosage is given to lesions position.Proton, which enters after medium, concentrates release in its end-of-range Energy simultaneously stops forming precipitous dosage peak, claims the peak Bragg.This physical characteristic is that proton therapeutic is substantially better than high-energy X-ray photon With the first cause of electron ray radiotherapy.And the precipitous dosage distribution that the peak Bragg is formed is very useful to improve target dose And surrounding normal tissue irradiation is reduced, the peak Bragg can be made to cover tumour, localization and positioning by modulating the peak Energy Broadening Bragg Composition error is no more than 1mm, can substantially reduce the probability for being damaged to normal cell.

In addition, energy loss is smaller on Proton-Induced Reactions channel, sidescattering also very little, agent suffered by normal tissue all around Amount is smaller, therefore has preferable radiologic physics performance.Compared to traditional x-ray CT image, proton CT image can clearly be shown Interaction between proton and tissue.By the system, during proton therapeutic, the process of patient tissue is passed through in proton In, multiple parameters can be measured, to obtain complete CT image.Patient anatomy and tumour CT are obtained by using proton CT Image, it is meant that proton can be used and obtain detailed three-dimensional patient anatomy's image, doctor over the course for the treatment of can be more smart True aiming tumour, preferably protects tumour surrounding health tissue, this is by the idicatio range of further expansion proton therapeutic.

Proton CT collimator system passes through detection as proton imaging equipment, the key components of proton therapy equipment Across the proton beam of object, using Image Reconstruction Technology, the internal structure of reconstructed object provides clear and accurate for proton therapeutic Image, help to improve the efficiency and therapeutic effect of proton therapeutic.

Utility model content

The purpose of this utility model is to provide a kind of feasible proton CT collimator systems.

The purpose of this utility model can be achieved through the following technical solutions:

Proton CT collimator system, including ion source, collimator, therapeutic bed, scintillator are set around the therapeutic bed ring week It is equipped with fixed bracket；Contact slip ring is provided on the inside of the fixed bracket；The ion source and scintillator are respectively fixedly disposed at It contacts on slip ring, and ion source and scintillator are oppositely arranged and rotate synchronously with diameter；The contact slip ring is rotated around therapeutic bed.

The system further includes beam monitoring instrument, and the beam monitoring instrument is between ion source and collimator；Ion source, beam It flows monitor and collimator forms line transmitting module.

The ion source emits proton beam；The beam monitoring instrument monitors proton beam；The collimator is to proton beam Flow through filter line.

The ion source transmitting is proton beam, using pen shape beam scanning.

The scintillator is plastic material；The scintillator is plastic scintillator.

The therapeutic bed support patient；The scintillator receives proton beam and is connected with imaging system, by proton beam The energy of stream is re-emitted into imaging system in the form of light.

The utility model has the beneficial effects that the ion of synchronous rotation is arranged in the proton CT collimator system of the utility model Source and scintillator, under contacting the drive of slip ring in fixed bracket, ion source and scintillator can be rotated around therapeutic bed, and acquisition obtains The image obtained is two-dimensional projection, then carrying out three-dimensional reconstruction by collecting computer is the 3-D image used for diagnosis；

Since the system is using pen shape beam scanning, thus the utilization rate of proton beam is higher, the matter of ion source transmitting Subnumber amount is lower, and improve at image accuracy, doctor can be used proton and obtains detailed three-dimensional patient anatomical Image is learned, can more accurately aim at tumour over the course for the treatment of, preferably protects tumour surrounding health tissue, this will be further Expand the idicatio range of proton therapeutic.

Detailed description of the invention

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the accompanying drawings.

Fig. 1 is the flow diagram of the utility model proton CT collimator system；

Fig. 2 is the schematic diagram of internal structure of the utility model proton CT collimator system；

Fig. 3 is the external structure schematic diagram of the utility model proton CT collimator system.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with embodiment, it is clear that described Embodiment be only the utility model a part of the embodiment, instead of all the embodiments.Based on the reality in the utility model Example is applied, all other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to In the range of the utility model protection.

Proton CT collimator system, referring to figure 2-3, including therapeutic bed 5, scintillator 2 and by ion source 1, beam monitoring The line transmitting module 10 that instrument 8 and collimator 6 form；

5 ring week of therapeutic bed is provided with fixed bracket 3, contact slip ring 4, line hair are provided on the inside of fixed bracket 3 It penetrates module 10 and scintillator 2 is respectively fixedly disposed on contact slip ring 4, and line transmitting module 10 and scintillator 2 are positioned at same It is diametrically opposed to one another setting and rotates synchronously, contact slip ring 4 is rotated around therapeutic bed 5；

Wherein, ion source 1 emits proton beam, and beam monitoring instrument 8 monitors proton beam, and collimator 6 flows through proton beam Line, 5 support patient 7 of therapeutic bed are filtered, the scintillator 2 receives proton beam and is connected with imaging system, by proton beam Energy be re-emitted into imaging system in the form of light；

As shown in Figure 1, proton beam is projected from ion source 1, shown and monitored by beam monitoring instrument 8, proton beam reaches Only meeting collimator when collimator 6 can just be passed through by the line of condition, collimator 6 to proton beam flow through filter line, into Row moulding and run-home object (i.e. the patient 7 of 5 support of therapeutic bed), it is ensured that be emitted to proton beam suitable on scintillator 2 Work as position, generates clearly image for imaging system below and lay the foundation；Proton beam passes through target object and reaches scintillator 2, Scintillator 2 absorbs the energy of proton beam and re-emits absorbed energy in the form of light.

Scintillator 2 is plastic scintillator；Ion source transmitting is proton beam, and using pen shape beam scanning, raising is taken aim at The precision of prospective tumor, and ion source is made to keep lower quantity of X-rays X, reduces the dose of radiation of patient, while proton beam Monitoring is monitored by beam monitoring instrument.

The utility model emits proton beam by ion source, and beam monitoring instrument monitors proton beam, and collimator is confrontation Beamlet stream is filtered, moulding and run-home object, therapeutic bed support patient, proton pass through target object and reach scintillator When, scintillator absorbs the energy of proton beam and re-emits absorbed energy in the form of light, due to the utility model System is using pen shape beam scanning, thus the utilization rate of proton beam is higher, and the proton quantity of ion source transmitting is lower, and Improve at image accuracy.

The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this Utility model.The utility model is limited only by the claims and their full scope and equivalents.

Claims (1)

1. proton CT collimator system, including ion source (1), collimator (6), therapeutic bed (5), scintillator (2), feature exists In: it surrounds and is provided with fixed bracket (3) in the therapeutic bed (5) ring week；Contact slip ring is provided on the inside of the fixed bracket (3) (4)；The ion source (1) and scintillator (2) are respectively fixedly disposed in contact slip ring (4), and ion source and scintillator are the same as straight Diameter is oppositely arranged and rotates synchronously；The contact slip ring (4) rotates around therapeutic bed (5)；

The system further includes beam monitoring instrument (8), and the beam monitoring instrument (8) is located between ion source (1) and collimator (6)； Ion source (1), beam monitoring instrument (8) and collimator (6) composition line transmitting module (10)；

The ion source (1) emits proton beam；The beam monitoring instrument (8) monitors proton beam；Collimator (6) confrontation Beamlet flows through filter line；

Ion source (1) transmitting is proton beam, using pen shape beam scanning；

The scintillator (2) is plastic scintillator；

Therapeutic bed (5) the support patient (7)；The scintillator (2) receives proton beam and is connected with imaging system, by matter The energy of beamlet stream is re-emitted into imaging system in the form of light.