Gating device for multi-channel radiotherapy

Abstract

The utility model discloses a multichannel gating device for radiotherapy, which comprises a multichannel input module, a processing mainboard and an output interface circuit, and the multichannel input module and the output interface circuit are in communication coupling with the processing mainboard. The multi-channel input module is used for being coupled with a plurality of groups of sensors used for monitoring position parameters and physiological parameters, and the output interface circuit is used for being coupled with a beam gating interface. After a processing result is obtained, an instruction is directly sent to a beam gating interface to realize beam control, and meanwhile, a data processing result is sent to a remote operation host, so that parallel processing and control instruction transmission by adopting the device are realized, and the delay time of opening or closing beam transmission by sensor signal processing is reduced.

Description

Technical Field

[0001] This utility model relates to the field of radiotherapy, specifically to a gating device for multi-channel radiotherapy. Background Technology

[0002] Based on any gating technology, accuracy is affected by the time delays in acquiring sensor signals, generating beam control signals, receiving beam status signals from the accelerator, and responding to beam control signals to open or close beam transmission. The total time delay at each stage is called the gating system time delay, which can lead to delays in opening or closing the beam delivery gate. Current traditional gating methods involve receiving sensor data, processing the data, sending it to a host computer (remote operating host), and then the host computer performs matching processing before sending commands to control the accelerator. This multi-stage data processing and transmission process results in excessive time delays, potentially leading to insufficient target dose or excessive dose to normal tissues, thus posing risks to patients. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned deficiencies in the prior art and to provide a multi-channel radiotherapy gating device.

[0004] The technical solution adopted by this utility model to solve the above problems is: a multi-channel radiotherapy gating device, characterized in that: it includes a multi-channel input module, a processing motherboard and an output interface circuit, wherein the multi-channel input module and the output interface circuit are communicatively coupled to the processing motherboard, the multi-channel input module is used to couple multiple sets of sensors for monitoring position parameters and physiological parameters, and the output interface circuit is used to couple a beam gating interface.

[0005] Preferably, the processing motherboard adopts a Zynq7020 series FPGA processing board, and the FPGA processing board is coupled to a multi-channel input module based on its expansion interface. The multi-channel input module adopts a multi-protocol industrial data acquisition device that supports the above-mentioned expansion interface protocol.

[0006] Preferably, the multi-protocol industrial data acquisition device includes any or a combination of LVCMOS, LVTTL, PCI, GTL, GTLP, SSTL, HSTL, LVDS, LDT, LVPECL, BLVDS, and ULVDS protocol interfaces.

[0007] Preferably, the sensor used to monitor position parameters includes any or a combination of infrared sensors and image sensors, and the physiological parameter sensor includes any or a combination of respiratory sensors, image sensors, electrocardiogram sensors, and blood oxygen sensors.

[0008] Preferably, the communication serial port of the processing motherboard is also coupled to a wireless communication module, which is coupled to the remote operation host through the wireless communication module.

[0009] Preferably, the remote operation host is a PC or a PAD.

[0010] Compared with the prior art, this utility model has the following advantages and effects: This utility model is essentially the development of a relay processing device, which collects various radiotherapy-related parameters through a multi-channel input module, processes them through a processing motherboard, and directly sends instructions to the beam gating interface to achieve beam control after obtaining the processing results. At the same time, it sends the data processing results to a remote operating host, realizing parallel processing and transmission of control instructions using this device, reducing the delay time between sensor signal processing and opening or closing beam transmission. Attached Figure Description

[0011] Figure 1 This is a hardware schematic diagram of a multi-channel radiotherapy gating device according to an embodiment of the present invention.

[0012] Figure 2 This is a schematic diagram of the signal processing circuit according to an embodiment of the present invention.

[0013] Figure 3 This is a circuit diagram of the power module circuit of an embodiment of this utility model.

[0014] Figure 4 This is a schematic diagram of the communication module circuit of an embodiment of this utility model.

[0015] Figure 5 This is a schematic diagram of the output interface circuit of an embodiment of this utility model. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0017] See Figures 1-5This embodiment discloses a multi-channel radiotherapy gating device, characterized by comprising a multi-channel input module, a processing motherboard, and an output interface circuit. The multi-channel input module and the output interface circuit are communicatively coupled to the processing motherboard. The multi-channel input module is used to couple multiple sets of sensors for monitoring position and physiological parameters. The output interface circuit is used to couple a beam gating interface. Essentially, this invention develops a relay processing device that collects various radiotherapy-related parameters through the multi-channel input module, processes them through the processing motherboard, and directly sends commands to the beam gating interface after obtaining the processing results to achieve beam control. Simultaneously, the data processing results are sent to a remote operating host, enabling parallel processing and transmission of control commands using this device, reducing the delay time between sensor signal processing and opening or closing beam transmission.

[0018] In this specific embodiment, the processing motherboard uses a Zynq 7020 series FPGA processing board. The ZYNQ-7020 integrates two ARM Cortex-A9 cores, providing high-performance processing capabilities. Combining the ARM processor and FPGA logic, the ZYNQ-7020 can achieve high-performance data processing and computing tasks, and can meet the requirements of parallel processing of various acquired signals and logic processing of beam gating instructions. The specific logic processing strategies use existing beam gating strategies directly written into the logic storage unit of the FPGA processing motherboard. The development of the specific peripheral circuits in the FPGA processing board adopts traditional development methods, which will not be elaborated upon here. Examples include FPGA signal processing circuits, power supply modules, and communication module circuits. Figure 2-4 As shown, the output interface circuit is as follows: Figure 5 As shown, the ZYNQ-7020 has rich peripheral interfaces. The FPGA processing board is coupled to the multi-channel input module through its expansion interface. The multi-channel input module adopts a multi-protocol industrial data acquisition device that supports the above-mentioned expansion interface protocols. Specifically, the multi-protocol industrial data acquisition device includes any or a combination of LVCMOS, LVTTL, PCI, GTL, GTLP, SSTL, HSTL, LVDS, LDT, LVPECL, BLVDS, and ULVDS protocol interfaces to meet the coupling access of sensor types of different protocols. Custom development can be realized for strategies that affect various parameters in beam gating. In this embodiment, the sensors used to monitor position parameters include any or a combination of infrared sensors and image sensors. The physiological parameter sensors include any or a combination of respiratory sensors, image sensors, electrocardiogram sensors, and blood sample sensors.

[0019] In this embodiment, the communication module of the processing motherboard is also coupled with a wireless communication module, which is coupled to the remote operation host, such as... Figure 5As shown, the communication module circuit is coupled to the RJ45 interface based on the HR911130A chip and connected to the wireless communication module. The wireless communication module can be any communication module or combination of WIFI, Bluetooth and cellular mobile communication. The remote operation host adopts a PC or PAD. The processed data and instructions are sent to the remote operation host. The remote operation host can also obtain the data according to the current operation status and realize autonomous control.

[0020] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A gating device for multi-channel radiotherapy, characterized in that: It includes a multi-channel input module, a processing motherboard, and an output interface circuit. The multi-channel input module and the output interface circuit are communicatively coupled to the processing motherboard. The multi-channel input module is used to couple multiple sets of sensors for monitoring position parameters and physiological parameters. The output interface circuit is used to couple a beam gating interface. The processing motherboard uses a Zynq7020 series FPGA processing board. Based on the FPGA processing board, it is coupled with a multi-channel input module through its expansion interface. The multi-channel input module uses a multi-protocol industrial data acquisition device that supports the above-mentioned expansion interface protocol.

2. The gating device for multi-channel radiotherapy according to claim 1, characterized in that: The multi-protocol industrial data acquisition device includes any or a combination of LVCMOS, LVTTL, PCI, GTL, GTLP, SSTL, HSTL, LVDS, LDT, LVPECL, BLVDS, and ULVDS protocol interfaces.

3. The gating device for multi-channel radiotherapy according to claim 1, characterized in that: The sensors used to monitor position parameters include any or a combination of infrared sensors and image sensors, and the physiological parameter sensors include any or a combination of respiratory sensors, image sensors, electrocardiogram sensors, and blood sample sensors.

4. A gating device for multi-channel radiotherapy according to claim 1, characterized in that: The communication serial port of the processing motherboard is also coupled to a wireless communication module, which is coupled to the remote operation host.

5. A gating device for multi-channel radiotherapy according to claim 4, characterized in that: The remote operation host is a PC or a PAD.

Images