KR20100119106A - System for radiotherapy planing information viewer - Google Patents

Abstract

PURPOSE: A radiation therapy plan information inquiry system for integrately inquiring plural radiation treatment plans regardless of the kind of the radiation therapy is provided to improve the efficiency of EMR(Electronic Medical Record) or OCS(Order Communication System) by integrately managing the treatment. CONSTITUTION: A radiation treatment planning information integrated inquiry system(200) receives a plurality of radiation therapy plan information inquiry systems for performing the radiation therapy systems(510-540). The radiation therapy plan information integrating inquiry system classifies the offered radiation therapy plans. The radiation therapy plan information integrating inquiry system inquires compile statistics.

Description

System for radiotherapy planing information viewer}

The present invention relates to a radiation therapy plan information integrated query system, and more specifically, a plurality of radiation treatment plans established in a plurality of radiation treatment planning systems can be integrated and viewed irrespective of the type of radiation treatment device Radiation therapy planning information integrated inquiry system.

In general, many systems or devices must be used for radiation therapy in hospitals. These types of systems and devices include Electronic Medical Record (EMR), Order Communication System (OCS), Picture Archiving and Communication System (PACS), and Radiation Therapy Planning System. Radiation Treatment Planning (RTP) and radiation therapy (eg, Linear Accelerator (LINAC)).

The prescription delivery system (OCS) is a database (DB) that stores various medical information and patient's medical examination data, and a doctor diagnoses a patient and delivers a prescription to each corresponding medical department through a communication network.

The electronic medical record system (EMR) is a system configured for the purpose of storing and retrieving electronic medical records.

The PACS is a CT (Computed Tommography) device, a Magnetic Resonance Imaging (MRI) device, a Positron Emission Tomography (PET) device, a CT scanner, and a Computed Radiography (CR). It is a system that can store and transfer the image taken by at least one medical imaging device including a computer file and is introduced to most hospitals of medium or larger size.

The radiation treatment planning system (RTP) is a system that programmatically establishes (creates) a radiation treatment plan for a patient. The radiation treatment planning system (RTP) performs radiation treatment planning, that is, preparation of radiation treatment plan information, radiation dose calculation and review.

The radiation therapy device is a device that actually performs radiation treatment for a patient according to a radiation treatment plan prepared by the radiation treatment planning system (RTP).

Tumor treatment methods of radiation oncology are newly developed and diversified, and thus, therapeutic devices and applications for various treatment methods are newly developed.

The procedure of performing radiation therapy for a patient in the radiation oncology department is as follows. First, to obtain information about the patient's tumor, a CT (Computed Tommography) device, a Magnetic Resonance Imaging (MRI) device, a Positron Emission Tomography (PET) device, a CT scanner, and a Computed Radiography (CR) The medical image of the patient is obtained through at least one medical imaging apparatus. Thereafter, a radiotherapy plan is established through a radiotherapy planning system (RTP) through the medical image of the patient. Next, radiation treatment is performed using the radiation therapy device based on the radiation treatment plan established through the radiation treatment planning system (RTP).

At this time, the radiation therapy device is a linear accelerator (LINAC), brachytherapy (Brachytherapy), cyberknife (Cyberknife), tomotherapy (Tomotherapy), etc. have been developed and used, these radiation therapy devices are appropriate to the condition of the patient's tumor, treatment site It is selected and used.

The radiation therapy devices are each provided with a corresponding radiotherapy planning system (RTP). That is, at least one radiation treatment planning system (RTP) is provided for each radiation treatment apparatus, and each radiation treatment apparatus performs radiation treatment according to a radiation treatment plan established in a corresponding radiation treatment planning system (RTP). For example, in the case of a linear accelerator, a radiation treatment planning system (RTP) for a linear accelerator exists separately, and a radiation treatment plan created by the radiation treatment planning system (RTP) for a linear accelerator is provided by a dedicated viewer (viewer) separately. ) Can be searched only through).

Therefore, the radiation treatment plan established in the RTP system for the linear accelerator can be used to design a radiotherapy planning system (RTP) or viewer for the treatment of brachytherapy, cyberknife, tomotherapy, etc. It is composed of a configuration that cannot be inquired through. The same is true for brachytherapy, cyberknife, and tomotherapy.

That is, one radiation therapy device, a radiation therapy planning system (RTP), and a viewer are constituted as an independent system by forming a group, and the radiation therapy planning system (RTP) or viewer for radiation therapy devices of different types or different manufacturers is included. Is not configured to query the radiation treatment plan.

This is due to the different manufacturers of radiation therapy devices and the use of different formats of data for each radiation therapy device. However, due to the system configuration, the cost of the system is increased for the hospitals that use them. It is becoming less efficient in radiation therapy.

Accordingly, there is a need for a system that can collectively inquire and manage a plurality of radiation treatment plans established in a plurality of radiation treatment planning systems (RTPs) regardless of the types of radiation treatment devices in response to the plurality of radiation treatment devices. .

Accordingly, an object of the present invention is to provide a radiotherapy planning information integrated query system that can overcome the above problems.

Another object of the present invention is to provide a radiotherapy planning information integrated query system capable of integrating the inquiry and management of a plurality of radiation treatment plans established in a plurality of radiation treatment planning system (RTP) corresponding to a plurality of radiation treatment devices There is.

It is still another object of the present invention to provide a radiation treatment plan information integrated query system that provides a search and statistically provided radiation dose of a plurality of radiation treatment plans established in a plurality of radiation treatment planning systems (RTP).

Still another object of the present invention is to provide an integrated inquiry system for radiotherapy plan information that can increase the efficiency of radiotherapy.

According to the embodiment of the present invention for achieving some of the technical problems described above, the integrated radiation treatment plan information inquiry system according to the present invention, a linear accelerator (LINAC), brachytherapy, cyberknife (Cyberknife), tomotherapy ( A plurality of radiations respectively established (created) in a plurality of radiation treatment planning systems (RTPs) corresponding to each of the plurality of radiation treatment devices, for radiation treatment through a plurality of radiation treatment devices including tomotherapy. Receiving treatment plans from the plurality of radiation treatment planning systems (RTP), classifying by patient, by radiation treatment device, and inquiring and statistically calculating radiation doses by patient and radiation treatment device; Integrate management and inquiry of multiple radiation treatment plans.

The plurality of radiation treatment plans may be provided to the radiation treatment plan information integrated inquiry system in the form of a DICOM file or a DICOM RT data file according to the Digital Imaging and Communications in Medicine (DICOM) standard.

The radiation treatment plan information integrated inquiry system includes: a treatment plan information classification unit classifying the plurality of radiation treatment plans by patient or by radiation treatment device; A treatment plan information inquiry unit for converting and providing radiation treatment plans for each patient or radiation treatment device classified by the treatment plan information classification unit through a viewer program; Dosage inquiry for inquiring the radiation dose absorbed into the patient's body by the patient or the radiation treatment device by the patient or the radiation treatment device classified by the treatment plan information classification unit and comparing the patient or radiation treatment device by radiation and A comparator; The dose inquiry and comparison unit is provided with a dose statistics unit for providing statistical information of the statistical information of the dose inquiry information and dose comparison information for each patient or radiation treatment device viewed and compared.

The dose statistics unit may generate and provide a dose-volume histogram (DVH) graph which statistically calculates the degree of dose absorption for a patient's important organs and treatment sites.

The dose inquiry and comparison unit may query and compare all radiation treatment plans to be performed for a patient, and may provide radiation distribution information according to a sum or difference of radiation distributions by at least two radiation treatment plans.

The dose statistics unit is the point that will receive the most radiation in the patient's body using the information provided through the inquiry and comparison through the dose inquiry and comparison unit, the minimum value, maximum value of the radiation to be absorbed in each volume (Volume), And an average value and a probability of damaging normal tissue for each volume (NTCP: Normal-Tissue Complication Probability).

According to the present invention, by integrating and inquiring and managing a plurality of radiation treatment plans provided by a plurality of radiation treatment planning systems (RTP), it is possible to increase the efficiency of radiation treatment and provide statistical information for each patient or radiation treatment device. By this, there is an effect that can be utilized in the treatment or research data.

  In addition, in the conventional case, only one treatment plan can be inquired in one device, but two or more treatment plans can be inquired and compared regardless of the treatment device, and absorbed into the body due to all treatments performed on the patient. The distribution of total radiation doses expected to be in one place can be viewed collectively.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings without intending to intend to provide a thorough understanding of the present invention to a person having ordinary skill in the art to which the present invention belongs.

1 and 2 is a block diagram of a radiotherapy planning information integrated query system according to an embodiment of the present invention.

As shown in FIG. 1, the integrated radiation treatment plan information inquiry system 200 according to an embodiment of the present invention includes a plurality of radiation treatment plans established in each of the plurality of radiation treatment plan systems (RTPs) 510, 520, 530, and 540. It performs the function of integrated management and inquiry of the radiation treatment plans such as classification, inquiry, dose inquiry and comparison, statistics, etc.

Wherein the plurality of radiotherapy planning systems (RTP) (510, 520, 530, 540), as shown in Figure 2, a radiotherapy planning system (510a) for linear accelerator (LINAC), a radiotherapy planning system for brachytherapy (520a) ), A radiation treatment planning system 530a for cyberknife, and a radiation treatment planning system 540a for tomotherapy. In addition, when there are a plurality of radiotherapy devices (eg, linear accelerators) of a particular type, radiotherapy planning systems (RTPs) corresponding to each of the plurality of radiation therapy devices of the same type may also be included. In addition, any type of radiotherapy planning system (RTP) may be included in carrying out radiotherapy planning.

The radiation treatment system currently used in a hospital includes one radiation treatment planning system (RTP) corresponding to one radiation treatment device as a set, so that when a plurality of radiation treatment devices are equipped, It has a structure in which a corresponding radiation treatment planning system (RTP) is provided. Of course, there may be a case where a plurality of radiation treatment planning systems corresponding to one radiation treatment device are provided, and the radiation treatment planning system in this case is also included in the plurality of radiation treatment planning systems 510, 520, 530, and 540.

The linear accelerator is X-ray and electron beam output as a standard equipment of the radiation therapy device and can adjust various energy high dose rate, beam shape. In recent years, computer-controlled advanced linear accelerators have been developed, and advanced assistive devices have been developed to enable three-dimensional stereoscopic treatment to increase the cure rate without side effects.

The brachytherapy device places radioactive isotopes such as cesium-137 (cesium), iridium-192 (iridium), and urethra-125 (iodine) as close to the tumor site as possible to intensively irradiate only the tumor site. Normal tissue is a radiotherapy device that allows protection from radiation exposure. Treatment with the brachytherapy machine is usually performed in conjunction with extracorporeal radiation therapy but is often used alone.

The CyberKnife is a stereotactic radiation therapy device that irradiates radiation from a linear accelerator mounted on a robot arm using a navigation system, which is a satellite navigation device, and can be applied to other tumors including brain tumors and is easy to divide and treat. Have It consists of linear accelerator, robot arm, lesion tracking device, treatment computer, etc., and it is used by attaching the linear accelerator, which is a radiation device, to the small-sized robot arm.

 The tomotherapy is a radiation therapy device that allows more accurate and effective radiation therapy than conventional radiation therapy by adding an imaging device function such as CT to the existing radiation therapy. Radiation therapy function is added to the function of CT, it is a radiation cancer treatment device with state-of-the-art technology that focuses the radiation on the tumor area seen in the CT image and minimizes the radiation dose on the non-tumor site.

The plurality of radiation treatment plans are provided to the radiation treatment plan information integrated inquiry system 200 in the form of DICOM image file or DICOM RT data file according to the Digital Imaging and Communications in Medicine (DICOM) standard.

The medical digital image communication standard (DICOM) is a standard communication standard for exchanging image-related information from imaging equipment of various manufacturers, and is adopted by a number of global medical imaging device manufacturers, and most of the currently manufactured and sold The radiation treatment planning systems (RTP) have a function of providing the established radiation treatment plan in the form of DICOM image file or DICOM RT data file according to the medical digital image communication standard (DICOM). .

The DICOM RT data file is a file containing treatment plan information established by the radiation treatment planning system (RTP). The DICOM RT data file can be divided into three types, RT structure set file, RT plan file, and RT dose file. The branch file includes volume information, point information, beam information, and dose information.

Here, the volume information refers to information indicating important organs and treatment sites. The point information refers to information designating a point to be treated or a center of a radiation beam, and the beam information. Refers to information about the beam addition direction or the irradiation direction of the beam, and the dose information includes information for calculating a dose to be received by the patient (absorbed in the body).

3 is an internal configuration block diagram of the radiation treatment plan information integrated query system 200 of FIGS. 1 and 2.

As shown in Figure 3, the radiation treatment plan information integrated query system 200, treatment plan information classification unit 210, treatment plan information inquiry unit 220, dose inquiry and comparison unit 230, and dose The statistics unit 240 is provided.

 The treatment plan information classification unit 210 classifies a plurality of radiation treatment plans provided by the plurality of radiation treatment planning systems 510, 520, 530, and 540 by patient or radiation treatment device.

Radiation therapy may be performed by using various types of radiation therapy devices for one patient, and in some cases, patients treated by radiation therapy devices may be different.

Therefore, the treatment plan information classification unit 210 classifies and stores a plurality of radiation treatment plans provided by the plurality of radiation treatment planning systems 510, 520, 530, and 540 by patient or radiation treatment device.

The treatment plan information inquiry unit 220 converts and provides radiation treatment plan information for each patient or radiation treatment device classified by the treatment plan information classification unit 210 through a viewer program. That is, when there is a request for inquiry of the radiation treatment plan information for a specific patient or a specific radiation therapy device from the outside, the treatment plan information inquiry unit 220 uses a viewer program that can inquire a DICOM image file or a DICOM RT data file. The radiotherapy plans will be inquired.

The inquiry of the radiation treatment plan, as shown in Figure 4, is to display one treatment plan information with a DICOM image file and a DICOM RT data file obtained from one radiation treatment plan. In general, the medical image used for the treatment and the medical image, the contour (information) and beam parameter (Beam Parameter) information indicating the organs and treatment sites, etc. that are important in the treatment plan of the patient will appear.

The dose inquiry and comparison unit 230 may determine the radiation dose absorbed into the patient's body by the patient or the radiation treatment device for the radiation treatment plan information by the patient or the radiation treatment device classified by the treatment plan information classification unit 210. Inquire and compare by patient or radiotherapy device.

In the dose inquiry and comparison unit 230, for example, various radiation treatment plans for a specific patient may be inquired, and radiation doses absorbed into a specific patient's body or a specific site may be inquired and compared. Can be. For example, as shown in FIG. 5, a comparison screen is provided with information obtained from two treatment plans, and a comparison of two radiation distributions and a 1: 1 comparison of radiation distributions in comparison with two radiation treatment plans are provided. The sum / difference is shown. 6 shows the difference between the two radiation distributions, and FIG. 7 shows the sum of the two radiation distributions.

The dose inquiry and comparison unit 230 provides correction information to the plurality of radiation treatment planning systems 510, 520, 530, and 540 when the radiation treatment plan has corrections through dose inquiry and comparison. Be sure to

The dose statistics unit 240 provides statistical information obtained by statistically evaluating dose inquiry information and dose comparison information for each patient or radiation treatment device that are inquired and compared in the dose inquiry and comparison unit 230.

For example, as shown in FIG. 8, it is a function of setting a predetermined condition and showing statistics on data of all radiation treatment plans meeting the condition. Statistical data are obtained with data only on dose. For example, you can show the dose distribution of all treatments that meet the conditions, and the distribution of total radiation dose for a specific site (the dose calculated by each treatment plan is a percentage of the total radiation dose). It also shows the ratio of occupying the ratio).

The dose statistics unit 240 may provide the statistical information through a dose-volume histogram (DVH) graph that calculates the degree of dose absorption of the patient's important organs and treatment sites.

The dose-volume histogram (DVH) graph is based on the volume information and the dose information provided in the radiotherapy plan to calculate the distribution of doses in each volume as a ratio of the total maximum radiation dose. It is generated by generating graph data obtained by calculating the distribution number for each ratio. In other words, the distribution of dose in each volume is statistically calculated for the ratio (1% interval: 0%, 1%, ..., 100%) to the total maximum radiation dose to find the distribution number for each ratio It is expressed in the form.

In addition to the DVH graph, the point of receiving the most radiation in the patient's body, the minimum, maximum, and average values of the radiation to be absorbed in each volume, and the normal-tissue complication probability for each volume: The probability of damage to normal tissue).

As described above, according to the present invention, by integrating the inquiry and management of a plurality of radiation treatment plans provided by a plurality of radiation treatment planning systems (RTP), it is possible to increase the efficiency of radiation treatment, patient-specific or radiation therapy device By providing statistical information by group, there is an effect that can be used for treatment or research data.

In addition, in the conventional case, only one treatment plan can be inquired in one device, but two or more treatment plans can be inquired and compared regardless of the treatment device. The distribution of total radiation doses expected to be in one place can be viewed collectively.

The foregoing description of the embodiments is merely illustrative of the present invention with reference to the drawings for a more thorough understanding of the present invention, and thus should not be construed as limiting the present invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the basic principles of the present invention.

1 and 2 are block diagrams of the integrated radiotherapy plan information query system according to an embodiment of the present invention,

FIG. 3 is a block diagram illustrating an internal configuration of the integrated radiation treatment plan information query system of FIG. 1;

4 to 7 are comparison pictures of the dose inquiry and comparison unit of FIG.

FIG. 8 illustrates a statistical screen of the dose statistics unit of FIG. 3.

* Description of the symbols for the main parts of the drawings *

200: Integrated inquiry system for radiation treatment plan information

210: treatment plan information classification unit 220: treatment plan information inquiry unit

230: dose inquiry and comparison unit 240: dose statistics unit

Claims (6)

In the integrated radiotherapy planning information inquiry system: A plurality of radiation therapies corresponding to each of the plurality of radiation therapies for radiation therapy with a plurality of radiation therapies including LINAC, Brachytherapy, Cyberknife, and Tomotherapy. Receive a plurality of radiation treatment plans established in each of the radiation treatment planning (RTP) systems from the plurality of radiation treatment planning (RTP) systems, and classify them by patient and radiation treatment device. And integrating and managing and inquiring the plurality of radiation treatment plans, including inquiring and statistically calculating radiation doses for each patient and radiation treatment device. The method of claim 1, wherein the plurality of radiation treatment plans, Radiation treatment plan information integrated inquiry system, characterized in that provided to the radiation treatment plan information integrated inquiry system in the form of DICOM image file or DICOM RT data file according to the Digital Imaging and Communications in Medicine (DICOM: Digital Imaging and Communications in Medicine). According to claim 2, The radiation treatment plan information integrated query system, A treatment plan information classification unit classifying the plurality of radiation treatment plans by patient or by radiation treatment device; A treatment plan information inquiry unit for converting and providing radiation treatment plans for each patient or radiation treatment device classified by the treatment plan information classification unit through a viewer program; The radiation treatment plans for each patient or radiation treatment device classified by the treatment plan information classification unit are searched for the amount of radiation absorbed into the patient's body by patient or radiation treatment device, and compared by patient or radiation treatment device, and the radiation A dose inquiry and comparison unit for providing correction information to the plurality of radiotherapy planning systems (RTPs) if there is a correction in the treatment plan; And a dose statistics unit for providing statistical information of the dose inquiry information and the dose comparison information for each patient or radiation treatment device, which are inquired and compared by the dose inquiry and comparison unit, and the radiation treatment plan information integrated inquiry system. The method according to claim 3, The dose statistics unit, the radiation treatment planning information integrated query system, characterized in that to provide a dose-volume histogram (DVH) graph that statistically calculates the degree of dose absorption to the patient's important organs and treatment sites. The method according to claim 3, The dose inquiry and comparison unit can query and compare all radiation treatment plans to be performed for a patient, and provides radiation distribution information according to the sum or difference of radiation distributions by at least two radiation treatment plans. Integrated radiotherapy planning information inquiry system. The method according to claim 3, The dose statistics unit is the point that will receive the most radiation in the patient's body using the information provided through the inquiry and comparison through the dose inquiry and comparison unit, the minimum value, maximum value of the radiation to be absorbed in each volume (Volume), And an average value and a probability of damaging normal tissue by each volume (NTCP: Normal-Tissue Complication Probability).

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