CN211245254U - Tumor radiotherapy system with monitoring function - Google Patents

Abstract

The utility model discloses a tumor radiotherapy system with monitoring, wherein a platform is arranged on a movable base, the outer side of a radiation cabin is respectively provided with an upper camera and a lower camera which are used for recording the position and the activity state of a patient, the upper camera is positioned above the left side of the platform, and the lower camera is positioned below the left side of the platform; an annular bracket is arranged in the bin shell, the emission source is arranged on the annular bracket, the emitter is arranged on one side of the emission source, the detector is positioned at the lower part of the emission bin, and the detector corresponds to the emitter in position; the movable base is of a concave structure, a groove and a guide rail groove are respectively arranged in the movable base, the platform is embedded in the groove, and a guide block is arranged at the bottom of the platform. This application can acquire patient's position image data through last camera and lower camera, can effectively predict the patient and remove the condition, avoids other circumstances to cover the field of vision and influence the judgement simultaneously, improves and shines the precision, avoids shining the in-process and endangers the healthy histiocyte on every side.

Description

Tumor radiotherapy system with monitoring function

Technical Field

The utility model relates to a radiotherapy equipment field, concretely relates to tumour radiotherapy system of area control.

Background

Tumor radiotherapy is a local treatment for tumors using radiation. The radiation includes alpha, beta and gamma rays generated by radioactive isotopes, and x-rays, electron beams, proton beams and other particle beams generated by various x-ray therapeutic machines or accelerators. About 70% of cancer patients require radiation therapy in the course of cancer treatment, and about 40% of cancers can be cured by radiation therapy. The role and position of radiotherapy in tumor treatment are increasingly prominent, and the radiotherapy has become one of the main means for treating malignant tumors.

Radiation therapy has been in the history for decades, but has progressed faster. With the help of the development of the CT imaging technology and the computer technology, the current radiotherapy technology is developed from two-dimensional radiotherapy to three-dimensional radiotherapy and four-dimensional radiotherapy technology, the radiotherapy dose distribution is also developed from point dose to volume dose distribution, and the dose intensity adjustment in the volume dose distribution is realized. Current mainstream radiotherapy techniques include Stereotactic Radiotherapy (SRT) and Stereotactic Radiosurgery (SRS). Stereotactic Radiotherapy (SRT) includes three-dimensional conformal radiotherapy (3DCRT), three-dimensional conformal Intensity Modulated Radiotherapy (IMRT); stereotactic Radiosurgery (SRS) comprises an X-Knife (X-Knife), a gamma Knife (Y-Knife) and a radiowave Knife (Cyber-Knife), and the X-Knife, the gamma Knife and the radiowave Knife belong to the field of stereotactic radiotherapy, and are characterized by three-dimensional, small-field, cluster, fractional and large-dose irradiation, which requires higher positioning precision and faster dose attenuation outside a target area.

The efficacy of radiation therapy depends on the sensitivity of the radiation, and the degree to which different tissues and organs, as well as various tumor tissues, respond differently after exposure to radiation. Radiosensitivity is related to the proliferative cycle and pathological grade of tumor cells, i.e., actively proliferating cells are more sensitive than non-proliferating cells, with higher cell differentiation giving lower radiosensitivity and vice versa. In addition, the oxygen content of tumor cells directly affects the radiosensitivity, for example, the early stage tumor has small volume and good blood circulation, the treatment effect is good when the number of hypoxic cells is small, the late stage tumor has large volume and poor blood circulation in the tumor, and even if the center has necrosis, the radiosensitivity is low; squamous carcinoma growing in local area has better blood circulation and higher sensitivity than tumor in buttocks and limbs; local combined infection of tumor, poor blood circulation (more hypoxic cells), and decreased radiosensitivity. Therefore, keeping the irradiated part clean and preventing infection and necrosis are important conditions for improving the sensitivity of radiotherapy.

In radiation therapy, a patient lies flat on a platform, and is moved by the platform movement into the beam path or treatment plane of a treatment radiation source of a radiation treatment system. In many radiation treatment systems, however, both the patient platform and the treatment radiation source are movable relative to each other so that radiation can be delivered to the tumor while limiting the delivery of radiation to surrounding healthy tissue. Therefore, equipment which has stable platform operation and can accurately monitor the lying posture of a patient is urgently needed in the market at present, and the situation that surrounding healthy tissue cells are damaged in the irradiation process is avoided by monitoring and timely correcting the position or reminding an operator.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a tumor radiotherapy system with monitoring.

In order to realize the technical purpose, the utility model discloses a scheme is: a tumor radiotherapy system with monitoring function comprises a radiation bin and a platform, wherein the platform is mounted on a movable base, the movable base can move up and down or move the platform horizontally, an upper camera and a lower camera which are used for recording the position and the activity state of a patient are respectively arranged on the outer side of the radiation bin, the upper camera is positioned above the left side of the platform, and the lower camera is positioned below the left side of the platform;

the radiation bin comprises a bin shell, an annular bracket, an emission source, an emitter and a detector, wherein the annular bracket is installed in the bin shell, the emission source is installed on the annular bracket, the emitter is arranged on one side of the emission source, the detector is positioned at the lower part of the emission bin, and the detector corresponds to the emitter in position;

the movable base is of a concave structure, a groove and a guide rail groove are formed in the movable base respectively, the platform is embedded into the groove, a guide block is arranged at the bottom of the platform, and the guide block is matched with the guide rail groove.

Preferably, at least one upper camera and two or more lower cameras are arranged outside the radiation bin.

Preferably, the middle part of the platform is provided with a shallow groove and a reference area.

The beneficial effects of the utility model are that the position image data of the patient can be obtained by the upper camera and the lower camera, the moving condition of the patient can be effectively predicted, meanwhile, other conditions are avoided covering the visual field to influence the judgment, the irradiation precision is improved, and the damage to the surrounding healthy tissue cells in the irradiation process is avoided; meanwhile, the platform in a specially-made shape is adopted, so that the moving process of the platform is more stable, the error caused by the movement of the platform is reduced, the irradiation precision is further improved, and the radiation damage to healthy cells is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the movable base and the platform of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, a specific embodiment of the present invention is a tumor radiotherapy system with monitoring, comprising a radiation chamber 2 and a platform 1, wherein the platform 1 is installed on a movable base 3, the movable base 3 can move up and down or move the platform 1 horizontally, an upper camera 4 and a lower camera 5 for recording the position and the activity state of a patient are respectively arranged outside the radiation chamber 2, the upper camera 4 is located above the left side of the platform 1, and the lower camera 5 is located below the left side of the platform 1;

the radiation bin 2 comprises a bin shell 6, an annular bracket 7, a transmission source 8, an emitter 9 and a detector 10, wherein the annular bracket 7 is installed in the bin shell 6, the transmission source 8 is installed on the annular bracket 7, the emitter 9 is arranged on one side of the transmission source 8, the detector 10 is positioned at the lower part of the radiation bin 2, and the detector 10 corresponds to the emitter 9 in position;

the movable base 3 is of a concave structure, a groove 11 and a guide rail groove 12 are respectively arranged in the movable base 3, the platform 1 is embedded into the groove 11, a guide block 13 is arranged at the bottom of the platform 1, and the guide block 13 is matched with the guide rail groove 12.

Preferably, at least one upper camera 4 and two or more lower cameras 5 are arranged outside the radiation chamber 2.

In order to reduce the patient's exposure to the designated area, the platform 1 is provided with a shallow groove 14 and a reference area 15 in the middle.

Conventional devices can only calculate or predict patient table and/or other radiation treatment system component movement first, but it is often difficult to predict patient movement. For example, the patient may voluntarily or involuntarily change their position on the platform (e.g., breathe, sit restlessly, shift due to discomfort, etc.). While the treatment plan is calculated based on an assumed patient position, location, and/or patient geometry (e.g., size, shape, etc.), patient motion may affect the quality and efficacy of the treatment session. For example, if radiation is applied without regard to changes in the position, location, and/or geometry of the patient relative to the therapeutic radiation source, the radiation may be delivered to non-target areas and the target area may not receive the radiation dose prescribed by the therapy. And (6) planning. An existing improvement is to mount a camera on the ceiling to monitor the position and/or location of the patient. The ceiling mounted cameras are easily obscured from view by the associated equipment on both sides of the platform. This application adopts last camera and lower camera combination, can effectively cover bigger field of vision scope. Meanwhile, the platform adopting the shallow groove design enables a patient to lie in a designated area more easily, and the platform slides more stably by adopting the guide block.

According to the method and the device, the position image data of the patient can be acquired through the upper camera and the lower camera, the movement condition of the patient can be effectively predicted, meanwhile, the situation that the judgment is influenced due to the fact that other conditions cover the visual field is avoided, the irradiation precision is improved, and damage to surrounding healthy tissue cells in the irradiation process is avoided; meanwhile, the platform in a specially-made shape is adopted, so that the moving process of the platform is more stable, the error caused by the movement of the platform is reduced, the irradiation precision is further improved, and the radiation damage to healthy cells is reduced.

The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.

Claims (3)

1. A tumor radiotherapy system with monitoring, comprising: the patient positioning device comprises a radiation bin and a platform, wherein the platform is mounted on a movable base, the movable base can move up and down or horizontally move the platform, an upper camera and a lower camera which are used for recording the position and the activity state of a patient are respectively arranged on the outer side of the radiation bin, the upper camera is positioned above the left side of the platform, and the lower camera is positioned below the left side of the platform;

the radiation bin comprises a bin shell, an annular bracket, an emission source, an emitter and a detector, wherein the annular bracket is installed in the bin shell, the emission source is installed on the annular bracket, the emitter is arranged on one side of the emission source, the detector is positioned at the lower part of the emission bin, and the detector corresponds to the emitter in position;

the movable base is of a concave structure, a groove and a guide rail groove are formed in the movable base respectively, the platform is embedded into the groove, a guide block is arranged at the bottom of the platform, and the guide block is matched with the guide rail groove.

2. The system of claim 1, wherein: at least one upper camera and two or more lower cameras are arranged outside the radiation bin.

3. The system of claim 1, wherein: the middle part of the platform is provided with a shallow groove and a reference area.

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