JP2014176518A - Particle beam treatment planning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently execute creation of a treatment plan to each respiration phase desired to be dose-evaluated, dose calculation, and evaluation of a dose distribution.SOLUTION: A particle beam treatment planning system includes: a treatment plan data management device storing a main CT (Computed Tomography) image and first-nth sub CT images; an outline drawing terminal acquiring the main CT image and mth sub CT image, drawing a main outline and a mth sub outline of an affected part, and transmitting the main outline and the mth sub outline; a treatment planning terminal creating a main treatment plan, and transmitting the main treatment plan and the main outline; a dose calculation device creating a main dose calculation result, and returning the main dose calculation result to the treatment planning terminal together with the main treatment plan; and a respiration synchronous dose evaluation terminal creating a mth sub treatment plan, and transmitting the mth sub treatment plan to the dose calculation device together with the mth sub outline. The dose calculation device creates a mth sub dose calculation result, and returns the mth sub dose calculation result to the respiration synchronous dose evaluation terminal together with the mth sub treatment plan.

Description

  The present invention relates to a particle beam therapy planning system used for formulating a therapy plan, and in particular, relates to improving the efficiency of dose calculation when preparing a therapy plan in consideration of respiratory fluctuations in an affected area.

  A particle beam treatment planning system is used to formulate treatment plans using particle beams. The location and size of the affected area changes as the patient breathes. With respect to such respiratory fluctuations in the affected area, improvement of the therapeutic effect can be expected by irradiating the affected area with particle beams in synchronization with respiration (see, for example, Patent Documents 1 to 3). In particle beam therapy that requires respiratory synchronization, a margin has been determined for the particle beam irradiation range by capturing multiple X-ray fluoroscopic images within a certain period of time and grasping the amount of movement of the affected area or important organ. . Since the dose calculation (simulation) of the particle beam is not performed for each respiratory phase, the margin of the irradiation range is set larger than necessary.

  When performing respiratory synchronization with particle beam therapy, it is desirable to create a treatment plan and calculate the particle beam dose for each respiratory phase. Four-dimensional CT (Computed Tomography) is used for dose calculation and dose distribution evaluation for each respiratory phase. Four-dimensional CT is obtained by photographing a CT image, which is three-dimensional data, within a certain time. It takes a great deal of time to perform these series of calculations.

JP 2002-186678 A JP 2007-236760 A International Publication No. 2009/072618

  The position and size of the affected part or important organ are changed by respiration. In particle beam therapy that requires respiratory synchronization, the margin of the irradiation range is determined by capturing a plurality of fluoroscopic images within a certain period of time and grasping the amount of movement of the affected area. It takes a lot of time to create a treatment plan and calculate the dose for each respiratory phase.

  The present invention has been made to solve the above-described problems. Each respiratory phase to be dose-evaluated is based on a treatment plan created for a respiratory phase that is actually treated using a four-dimensional CT image. The purpose is to efficiently prepare treatment plans, calculate doses and evaluate dose distributions.

  A particle beam treatment planning system according to the present invention includes a treatment plan data management apparatus in which a main CT image used for particle beam treatment and first to n-th sub CT images used for respiratory synchronization evaluation are stored; When an image acquisition request is received, a main CT image is acquired from the treatment plan data management apparatus. When a main contour creation request is received, a main contour of the affected area is drawn from the main CT image, and when a main contour transmission request is received, the main contour is received. Is transmitted together with the main CT image, and when an m-th (1 ≦ m ≦ n) sub-CT image acquisition request is received, the m-th sub CT image is acquired from the treatment plan data management apparatus, and the m-th sub-contour creation request Is received, the m-th sub-contour of the affected part is drawn from the m-th sub-CT image, and when the m-th sub-contour transmission request is received, the contour drawing terminal that transmits the m-th sub-contour and the contour drawing terminal Outgoing When collecting the main CT image and the main contour and receiving the irradiation condition setting request, creating a main treatment plan for the main CT image based on the set irradiation condition of the particle beam, and receiving the first dose calculation request, When a main treatment plan and main contour are transmitted and a treatment plan transmission request is received, a treatment plan terminal that transmits the main treatment plan and a main treatment plan and main contour transmitted from the treatment plan terminal are collected. The main CT image is acquired from the treatment plan data management device, the dose calculation of the particle beam corresponding to the main treatment plan is executed to create the main dose calculation result, and the main dose calculation result is treated together with the main treatment plan. When the dose calculation device that returns to the planning terminal, the main treatment plan transmitted from the treatment planning terminal and the mth subcontour transmitted from the contour drawing terminal are collected and the second dose calculation request is received, the main treatment plan The mth Edit to fit the sub-contour to create a sub-therapeutic regimen of the m, and a respiratory gating dose assessment terminal sending to dose calculation device sub treatment plan of the m with sub contour of the m. When the dose calculation apparatus collects the m-th sub-treatment plan and the m-th sub-contour transmitted from the respiratory synchronization dose evaluation terminal, the dose calculation device displays the m-th sub-CT image that is the basis of the m-th sub-contour as treatment plan data. The m-th sub-dose calculation result is created by executing the dose calculation of the particle beam corresponding to the m-th sub-treatment plan obtained from the management device, and the m-th sub-dose calculation result is generated as the m-th sub-treatment plan. At the same time, it returns to the respiratory synchronized dose evaluation terminal.

  The particle beam treatment planning system according to the present invention uses four-dimensional CT, and based on the treatment plan created for the respiratory phase to be actually treated, creates a treatment plan for each respiratory phase for which dose evaluation is desired, calculates the dose, and Evaluate dose distribution efficiently. As a result, in the particle beam therapy planning system that performs dose calculation with respiratory synchronization, it is possible to reduce the time required to create and evaluate a therapeutic plan with respiratory synchronization.

It is a lineblock diagram showing the whole particle beam therapy planning system concerning this application. FIG. 3 is a flowchart for explaining a procedure for creating a treatment plan according to the first embodiment. FIG. 10 is a flowchart for explaining a procedure for creating a treatment plan according to the second embodiment. FIG. 10 is a flowchart for explaining a procedure for creating a treatment plan according to the third embodiment. FIG. 10 is a diagram showing a plan image of a treatment plan according to the third embodiment. FIG. 10 is a diagram showing a plan image of a treatment plan according to the third embodiment. FIG. 10 is a flowchart for explaining a procedure for creating a treatment plan according to the fourth embodiment. FIG. 10 is a diagram showing a plan image of a treatment plan according to the fourth embodiment. FIG. 10 is a flowchart for explaining a procedure for creating a treatment plan according to the fifth embodiment. FIG. 10 is a diagram showing a plan image of a treatment plan according to the fifth embodiment. FIG. 10 is a flowchart for explaining a procedure for creating a treatment plan according to the sixth embodiment. FIG. 20 is a flowchart for explaining a procedure for creating a treatment plan according to the seventh embodiment. FIG. 20 is a flowchart for explaining a procedure for creating a treatment plan according to the eighth embodiment.

  Embodiments of a particle beam therapy planning system according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably.

Embodiment 1 FIG.
The overall configuration of the particle beam therapy planning system according to the present invention will be described with reference to FIG. The particle beam treatment planning system 100 includes a treatment plan terminal 1, an outline drawing terminal 2, a treatment plan data management device 3, a dose calculation device 4, a respiratory synchronization dose evaluation terminal 5, and the like. The treatment plan data management apparatus 3 stores a four-dimensional CT image related to the affected area obtained by a CT (Computed Tomography) apparatus. A four-dimensional CT image is created by photographing a CT image, which is three-dimensional data, within a certain time using a CT apparatus. The particle beam therapy planning system 100 and the CT apparatus are connected to each other via a network. The four-dimensional CT image includes at least one main CT image used for actual treatment and n sub-CT images used for evaluation of respiratory synchronization treatment. The main CT image and the sub CT image have different respiratory phases. It is assumed that M sets of four-dimensional CT images are stored in the treatment plan data management apparatus 3.

  The contour drawing terminal 2 takes in a CT image from the treatment plan data management device 3 when the user requests acquisition of a CT image, and draws the contour of the affected area from the acquired CT image when the user requests further contour creation. In the treatment requiring respiratory synchronization, it is also possible to capture a four-dimensional CT image and automatically draw a deformed contour from the contour for treatment. When the user requests contour transmission, the contour drawing terminal 2 transmits the captured CT image and the drawn contour to the treatment planning terminal 1. The treatment planning terminal 1 captures the CT image and the contour of the affected area transmitted from the contour drawing terminal 2. In order to plan irradiation conditions such as how much dose is irradiated from which direction to the cancer affected area, the user requests the treatment planning terminal 1 to set irradiation conditions. The treatment plan terminal 1 creates a treatment plan when irradiation conditions are set. When the user further requests a dose calculation, the treatment plan terminal 1 transmits an outline and a treatment plan to the dose calculation device 4 and requests the dose calculation device 4 for dose calculation (simulation). There are a plurality of treatment plan terminals 1.

  When the dose calculation device 4 executes dose calculation and returns the dose calculation result to the treatment plan terminal 1, the treatment plan terminal 1 displays the dose distribution obtained from the result. The treatment plan data management device 3 is a CT image created by the CT device or data (contour, treatment plan, dose calculation result) created by each terminal (treatment plan terminal 1, contour drawing terminal 2) of the particle beam treatment plan system 100. ). The dose calculation device 4 performs dose calculation in response to the dose calculation request from the treatment planning terminal 1 and returns the result to the requesting treatment planning terminal 1. The respiratory synchronization dose evaluation terminal 5 collects the treatment plan created by the treatment plan terminal 1. Further, the respiratory synchronization dose evaluation terminal 5 collects the contours created by the contour drawing terminal 2 for the phase different from the respiratory phase for performing the treatment plan, and requests the dose calculation device 4 to calculate the dose for each respiratory phase.

  Next, the operation of the particle beam therapy planning system 100 will be described. FIG. 2 shows an operation flow (sequence) of the first embodiment. It is the “doctor” who instructs the contour drawing terminal 2 to create a contour. It is “physicist A” who sets the irradiation conditions on the treatment plan terminal 1. The “physicist B” requests dose calculation at the respiratory synchronization dose evaluation terminal 5. The user requests acquisition of the main CT image at the contour drawing terminal 2 and acquires from the treatment plan data management device 3 a CT image corresponding to the respiratory phase for actually performing particle beam therapy. The user further requests creation of a main contour and creates a contour for the main CT image. The user further requests main contour transmission and transmits the main CT image and main contour to the treatment planning terminal 1. The user sets irradiation conditions (beam direction, dose, etc.) for the received CT image and contour at the treatment planning terminal 1. Further, when the dose calculation is requested, the treatment plan terminal 1 transmits the contour and the treatment plan to the dose calculation device 4.

  In the dose calculation device 4 that has received the dose calculation request, the CT image (which is the same as the CT image acquired by the contour drawing terminal 2 from the treatment plan data management device 3) from which the contour is created is generated from the treatment plan data management device 3. Obtain and perform dose calculations for the received treatment plan. As a result, the dose calculation device 4 transmits a treatment plan (a treatment plan in which information on irradiation equipment is set by dose calculation) and a dose calculation result to the treatment plan terminal 1. When the treatment plan and the dose calculation result are received from the dose calculation device 4, the treatment plan terminal 1 displays the dose distribution. Up to this point, the flow is in particle beam therapy without respiratory synchronization. In the particle beam therapy with respiratory synchronization, the user thereafter issues a treatment plan transmission request, and transmits the treatment plan from the treatment plan terminal 1 to the respiratory synchronization dose evaluation terminal 5.

The user requests acquisition of a sub CT image at the contour drawing terminal 2, and acquires a CT image (sub CT image for evaluation) having a phase different from the respiratory phase for performing the actual treatment from the treatment plan data management device 3. The contour drawing terminal 2 creates a sub-contour when receiving a sub-contour creation request from the user. When the subcontour transmission request is received from the user, the subcontour created is transmitted to the respiratory synchronization dose evaluation terminal 5. The user performs this series of operations in the contour drawing terminal 2 for all respiratory phases for which dose evaluation is desired. In the respiratory synchronization dose evaluation terminal 5, the user requests the dose calculation device 4 to calculate a dose for the treatment plan received from the treatment plan terminal 1 and the contour of each respiratory phase received from the contour drawing terminal 2.

  In response to a dose calculation request from the user, the respiratory synchronization dose evaluation terminal 5 extracts one from a plurality of contours received from the contour drawing terminal 2, and matches the treatment plan received from the treatment plan terminal 1 with the contour. After editing, the dose calculation device 4 is requested to calculate dose. The dose calculation device 4 performs the same operation as when a dose calculation request is received from the treatment planning terminal 1. First, the dose calculation device 4 requested to calculate a dose calculates the CT image (which is the same as the CT image acquired by the contour drawing terminal 2 from the treatment plan data management device 3) from which the contour is generated, from the treatment plan data management. Dose calculation for the treatment plan acquired and received from the apparatus 3 is performed. As a result, the dose calculation device 4 returns a treatment plan (a treatment plan in which information on irradiation equipment is set by dose calculation) and a dose calculation result to the respiratory synchronization dose evaluation terminal 5. When the user requests a dose calculation, the respiratory synchronization dose evaluation terminal 5 and the dose calculation device 4 perform this series of operations for the number of contours received from the contour drawing terminal 2.

  For the contour of each phase that is different from the respiratory phase that is actually treated, the treatment plan terminal 1 sets the irradiation conditions (beam direction, dose, etc.) and the dose calculation request in the same manner as the treatment plan that is actually implemented. Compared with the method to be performed, in the first embodiment, in the respiratory synchronization dose evaluation 5, the treatment plan editing and the dose calculation are requested for the contour of each phase different from the respiratory phase to be actually treated. Dose calculation is possible.

Embodiment 2. FIG.
FIG. 3 shows an operation flow (sequence) of the second embodiment. In Embodiment 1, the contour drawing terminal 2 requests the irradiation condition setting after executing CT image acquisition, contour creation, and contour transmission for the main CT image for treatment, but here, the contour drawing terminal After performing CT image acquisition, contour creation, and contour transmission for the sub CT image for evaluation in 2, the irradiation condition setting is requested.

  For the contour of each phase that is different from the respiratory phase that is actually treated, the treatment plan terminal 1 sets the irradiation conditions (beam direction, dose, etc.) and the dose calculation request in the same manner as the treatment plan that is actually implemented. Compared with the method to be performed, in the first embodiment, in the respiratory synchronization dose evaluation 5, the treatment plan editing and the dose calculation are requested for the contour of each phase different from the respiratory phase to be actually treated. Dose calculation is possible.

Embodiment 3 FIG.
The first embodiment and the second embodiment achieve the realization of the efficiency of dose calculation for one treatment plan for actually performing treatment and “one set” of contours for a plurality of respiratory phases. In actual operation, multiple plans may be created for the respiratory phase to be treated. The “drawing doctor” instructs the contour drawing terminal 2 to create a contour, and the “physicist” sets the irradiation conditions on the treatment planning terminal 1. The particle beam treatment planning system 100 according to the third embodiment enables dose calculation with a plurality of sets in the respiratory synchronization dose evaluation terminal 5.

  The operation flow at this time is shown in FIG. The difference from the first and second embodiments is “contour-treatment plan association” in the respiratory synchronization dose evaluation terminal 5. The doctor draws a contour (for treatment) with respect to the phase to be treated at an arbitrary timing in the contour drawing terminal 2 and transmits the contour to the treatment planning terminal 1. Further, the doctor draws contours (for evaluation) for a plurality of phases different from the treatment at an arbitrary timing in the contour drawing terminal 2 and transmits them to the respiratory synchronization dose evaluation terminal 5.

  The user sets irradiation conditions (beam direction, dose, etc.) for one contour received from the contour drawing terminal 2 in the treatment planning terminal 1. Furthermore, the treatment plan terminal 1 transmits a dose calculation request and transmits the contour and the treatment plan to the dose calculation device 4. In either case, transmission can be performed without being aware of whether or not dose calculation is performed on the data previously transmitted to the respiratory synchronization dose evaluation terminal 5. In the dose calculation device 4 that has received the dose calculation request, the CT image (which is the same as the CT image acquired by the contour drawing terminal 2 from the treatment plan data management device 3) from which the contour is created is generated from the treatment plan data management device 3. Obtain and perform dose calculations for the received treatment plan. As a result, the dose calculation device 4 transmits a treatment plan (a treatment plan in which information on irradiation equipment is set by dose calculation) and a dose calculation result to the treatment plan terminal 1. When the treatment plan and the dose calculation result are received from the dose calculation device 4, the treatment plan terminal 1 displays the dose distribution. Thereafter, the treatment plan is transmitted from the treatment plan terminal 1 to the respiratory synchronization dose evaluation terminal 5.

  The user performs the above-described series of operations for one contour for a plurality of contours. After all the treatment plans and contours have been prepared, the user sets the association between which treatment plan and which contour is a set on the screen at the respiratory synchronization dose evaluation terminal 5. Thereafter, the user further requests the dose calculation device 4 for dose calculation. Dose calculation is performed between the respiratory synchronization dose evaluation terminal 5 and the dose calculation device 4 as follows. The respiratory synchronization dose evaluation terminal 5 performs this series of operations for the number of treatment plans received from the contour drawing terminal 2.

  In response to a dose calculation request from the user, the respiratory synchronization dose evaluation terminal 5 extracts one from a plurality of contours received from the contour drawing terminal 2, and matches the treatment plan received from the treatment plan terminal 1 with the contour. After editing, the dose calculation device 4 is requested to calculate dose. The dose calculation device 4 requested to calculate the dose calculates the CT image (same as the CT image acquired by the contour drawing terminal 2 from the treatment plan data management device 3) from which the contour is generated, from the treatment plan data management device 3. The dose calculation is performed on the received treatment plan by the number of contours obtained from the above and associated with the treatment plan. As a result, the dose calculation device 4 transmits a treatment plan (a treatment plan in which information on irradiation equipment is set by dose calculation) and a dose calculation result to the respiratory synchronization dose evaluation terminal 5.

  The screen image shown in FIG. 5 posts a treatment plan. In the four treatment plans, a patient ID, a patient name, a plan ID, a plan creation date, the number of related contours, and a calculation result are displayed. When requesting dose calculation, check the box for calculation target. When the calculation result is “◯”, it indicates that the dose calculation has been completed for all the contours. When the calculation result is “Δ”, it indicates that the dose calculation has been completed for some contours. When the calculation result is “x”, it indicates that the dose calculation has not been completed for all the contours.

  The screen image shown in FIG. 6 represents the details of the contour information of the treatment plan for the patient ID: 07868. Six contours are registered in the treatment plan for the patient ID: 07868. The user puts a check in the relevant column and performs “contour-treatment plan association”. Here, 4 out of 6 cases were set as being associated, and dose calculation was performed. Thereby, the particle beam treatment planning system 100 according to Embodiment 3 can efficiently perform dose calculation for a plurality of sets (a plurality of contours for one treatment plan).

Embodiment 4 FIG.
In the third embodiment, the user associates the treatment plan with the contour of each respiratory phase. However, in the fourth embodiment, the CT image that is the basis of the treatment plan and the CT image that is the source of the contour of each respiratory phase. It is possible to associate automatically from the information of. The operation flow at this time is shown in FIG. The difference from the third embodiment is that “contour” is added as data to be transmitted from the treatment planning terminal 1 to the respiratory synchronization dose evaluation terminal 5, and that the user requests “automatic association” from the screen image to breathe. The synchronized dose evaluation terminal 5 automatically associates. After the association, the processing after the user makes a dose calculation request is the same as in the third embodiment.

  When the user requests “automatic association”, the respiratory synchronization dose evaluation terminal 5 automatically extracts the treatment plan received from the treatment plan terminal 1 and the contour referred to by the treatment plan. When creating the contour from the extracted contour information, the original CT image is identified, and the identified CT image is acquired from the treatment plan data management apparatus 3. Next, the respiratory synchronization dose evaluation terminal 5 similarly specifies a CT image from the contour received from the contour drawing terminal 2, and acquires the specified CT image from the treatment plan data management device 3. The respiratory synchronization dose evaluation terminal 5 checks examination information (patient information, examination information, imaging conditions) associated with each CT image by the number of outlines received from the outline drawing terminal 2. If the examination information and the like are the same, it is determined that association is possible, and the treatment plan and the contour are associated. The respiratory synchronization dose evaluation terminal 5 performs this series of operations for the number of treatment plans received from the treatment plan terminal 1.

  The screen image shown in FIG. 8 posts four pieces of plan information. In the four treatment plans, a patient ID, a patient name, a plan ID, a plan creation date, the number of related contours, and a calculation result are displayed. Compared with the screen image shown in FIG. 5, “automatic association” is added. To execute “automatic association”, check the calculation target column and press the automatic association button.

Embodiment 5 FIG.
In the first to fourth embodiments, the calculation up to the dose for the contour of the respiratory phase different from the respiratory phase in which the treatment is performed is executed. In the fifth embodiment, the dose distribution result can be evaluated in the treatment plan terminal 1 by transmitting the dose calculation result to the treatment plan terminal 1. Since there are a plurality of treatment plan terminals 1, a terminal that is convenient for evaluating the dose distribution is designated. The operation flow at this time is shown in FIG. After completion of the dose calculation, the dose calculation result is transmitted from the respiratory synchronization dose evaluation terminal 5 to the designated treatment plan terminal 1. The treatment plan terminal 1 displays and evaluates a dose distribution in a respiratory phase different from the respiratory phase in which treatment is performed.

  A screen image according to the fifth embodiment is shown in FIG. Similar to the screen image shown in FIG. 6, the outline information of the treatment plan for the patient ID: 07868 is displayed. In order to designate the treatment plan terminal 1, it selects from a transmission destination in a screen image. In the figure, RTPA is selected as the treatment planning terminal 1. If transmission of the calculation result is clicked, data (treatment plan, dose calculation result, contour) is transmitted from the respiratory synchronization dose evaluation terminal 5 to the treatment plan terminal 1.

  When the user requests the respiratory synchronization dose evaluation terminal 5 to transmit a dose calculation result, the respiratory synchronization dose evaluation terminal 5 is the same as the number of treatment plans received from the treatment plan terminal 1 for the specified treatment plan terminal 1. The treatment plan, the dose calculation result, and the contour are transmitted. The user selects a treatment plan on the treatment plan terminal 1 and displays a dose distribution. Further, when the user requests dose distribution evaluation at the treatment planning terminal 1, the user can proceed with evaluation of the dose distribution using the displayed dose distribution.

Embodiment 6 FIG.
In the fifth embodiment, the dose calculation result is transmitted to an arbitrary treatment plan terminal 1 and the dose distribution is confirmed by the treatment plan terminal 1. In the sixth embodiment, since the dose distribution can be displayed on the respiratory synchronization dose evaluation terminal 5, it is possible to save the trouble of transmitting data to the treatment planning terminal 1. By not evaluating the dose distribution at the treatment plan terminal 1, the occupation time of the treatment plan terminal 1 is shortened, so that the treatment plan terminal 1 can be used to create another treatment plan.

  The operation flow at this time is shown in FIG. The user requests treatment plan selection at the respiratory synchronization dose evaluation terminal 5 and displays the dose distribution. Further, when the user requests dose distribution evaluation at the respiratory synchronization dose evaluation terminal 5, the user can proceed with evaluation of the dose distribution using the displayed dose distribution. The difference from the fifth embodiment is that the dose distribution is displayed and evaluated by the respiratory synchronization dose evaluation terminal 5 after completion of the dose calculation.

Embodiment 7 FIG.
In the sixth embodiment, the dose calculation result of the treatment plan created for the respiratory phase in which treatment is actually performed needs to be displayed on the treatment plan terminal 1. In Embodiment 7, the treatment plan terminal 1 transmits the dose calculation result together with the treatment plan and contour to the respiratory synchronization dose evaluation terminal 5, thereby displaying the dose calculation result on the contour for the respiratory phase different from the treatment, Dose distribution evaluation is possible. In addition, as a result of dose distribution evaluation, when it is confirmed that there is no problem in the treatment plan and dose distribution to be treated, the treatment plan, contour, and dose calculation result are sent from the respiratory synchronized dose evaluation terminal 5 to the treatment plan data management device 3. Registration is possible.

  The operation flow at this time is shown in FIG. The difference from the sixth embodiment is that the treatment plan terminal 1 transmits the treatment plan and the dose calculation result together with the contour, and after evaluating the dose distribution, the respiratory synchronization dose evaluation terminal 5 sends the data to the treatment plan data management device 3 ( The treatment plan, the dose calculation result, and the contour) are registered.

Embodiment 8 FIG.
In the embodiments so far, the contour drawing terminal 2 performs the processing on a single main CT image. In the eighth embodiment, it is performed on a plurality of main CT images. The operation flow at this time is shown in FIG. The first embodiment and the second embodiment achieve the realization of the efficiency of dose calculation for one treatment plan for actually performing treatment and “one set” of contours for a plurality of respiratory phases. In actual operation, multiple plans may be created for the respiratory phase to be treated. The “drawing doctor” instructs the contour drawing terminal 2 to create a contour, and the “physicist” sets the irradiation conditions on the treatment planning terminal 1. The particle beam therapy planning system 100 according to the eighth embodiment enables dose calculation with a plurality of sets in the respiratory synchronization dose evaluation terminal 5.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

  1 treatment plan terminal, 2 contour drawing terminal, 3 treatment plan data management device, 4 dose calculation device, 5 respiratory synchronized dose evaluation terminal, 100 particle beam treatment plan system

Claims (15)

A treatment plan data management apparatus in which main CT images used for particle beam therapy and first to n-th sub CT images used for respiratory synchronization evaluation are stored;
When the main CT image acquisition request is received, the main CT image is acquired from the treatment plan data management device. When the main contour creation request is received, the main contour of the affected area is drawn from the main CT image, and the main contour transmission request is issued. When accepted, the main contour is transmitted together with the main CT image, and when the m-th (1 ≦ m ≦ n) sub-CT image acquisition request is received, the m-th sub CT image is acquired from the treatment plan data management device. When the mth subcontour creation request is received, the mth subcontour of the affected part is drawn from the mth subCT image, and when the mth subcontour transmission request is received, the mth subcontour is A contour drawing terminal to send,
The main CT image and the main contour transmitted from the contour drawing terminal are collected, and upon receiving an irradiation condition setting request, a main treatment plan for the main CT image is created based on the set irradiation condition of the particle beam, When receiving a dose calculation request of 1, the main treatment plan and the main contour are transmitted, and when a treatment plan transmission request is received, a treatment plan terminal that transmits the main treatment plan;
When the main treatment plan and the main contour transmitted from the treatment plan terminal are collected, the main CT image based on the main contour is acquired from the treatment plan data management device, and the particle beam corresponding to the main treatment plan A dose calculation device that executes a dose calculation of the main dose calculation result to create a main dose calculation result and returns the main dose calculation result to the treatment plan terminal together with the main treatment plan;
When the main treatment plan transmitted from the treatment plan terminal and the mth subcontour transmitted from the contour drawing terminal are collected and a second dose calculation request is received, the main treatment plan is converted into the mth subcontour. A respiratory synchronization dose evaluation terminal that edits the m-th sub-treatment plan so as to meet the requirements, and transmits the m-th sub-treatment plan to the dose calculator together with the m-th sub-contour,
When the dose calculation apparatus collects the m-th sub-treatment plan and the m-th sub-contour transmitted from the respiratory synchronization dose evaluation terminal, the m-th sub-CT image based on the m-th sub-contour is obtained. Obtaining the m-th sub-dose calculation result by executing the dose calculation of the particle beam corresponding to the m-th sub-treatment plan, obtained from the treatment plan data management device, and obtaining the m-th sub-dose calculation result A particle beam therapy planning system which sends a reply to the respiratory synchronization dose evaluation terminal together with the m-th auxiliary therapy plan.   When the contour drawing terminal receives an “mth (1 ≦ m ≦ n) sub CT image acquisition request, the contour drawing terminal acquires the m th sub CT image from the treatment plan data management device, and creates the m th sub contour. When the request is received, the mth subcontour of the affected part is drawn from the mth subCT image, and when the mth subcontour transmission request is received, the “mth subcontour is transmitted” The particle beam treatment planning system according to claim 1, wherein the system is executed for a plurality of sub CT images having different values.   The respiratory synchronization dose evaluation terminal “edits the main treatment plan so as to fit the m-th sub-contour to create an m-th sub-treatment plan, and converts the m-th sub-treatment plan into the m-th sub-treatment plan. The operation of “transmitting to the dose calculation apparatus together with a contour” is executed for all of the m-th sub-contour acquired from the contour drawing terminal when the second dose calculation request is received. Item 3. A particle beam therapy planning system according to Item 2.   4. The particle beam therapy according to claim 3, wherein the treatment planning terminal receives the irradiation condition setting request after the contour drawing terminal completes an operation of transmitting the main contour together with the main CT image. Planning system.   4. The particle beam treatment planning system according to claim 3, wherein the treatment planning terminal receives the irradiation condition setting request after the contour drawing terminal completes an operation of transmitting the m-th subcontour. . The treatment planning terminal creates a main treatment plan for the main CT image based on the set irradiation condition of the particle beam when receiving the irradiation condition setting request, and receives the first dose calculation request when receiving the first dose calculation request. The operation of transmitting a treatment plan and the main contour and transmitting the main treatment plan when receiving a treatment plan transmission request is performed on a plurality of sub-contours having different values of m. 2. The particle beam therapy planning system according to 2.   When receiving the contour-treatment plan association request, the respiratory synchronization dose evaluation terminal displays a screen for selecting a sub-contour corresponding to a treatment plan that requires execution of dose calculation from all the acquired sub-contours. The particle beam therapy planning system according to claim 6.   4. The particle beam treatment planning system according to claim 3, wherein the treatment plan terminal transmits the main outline together with the main treatment plan to the respiratory synchronization dose evaluation terminal when receiving the treatment plan transmission request.   When receiving the automatic association request, the respiratory synchronization dose evaluation terminal receives the main CT image that is the basis of the main contour and the m-th sub CT image that is the basis of the m-th sub-contour, and the treatment plan data management 9. The particle beam therapy according to claim 8, wherein contour-treatment plan association is executed from a comparison between the accompanying information of the main CT image and the accompanying information of the m-th sub CT image obtained from an apparatus. Planning system.   Upon receiving a dose calculation result transmission request, the respiratory synchronization dose evaluation terminal transmits the mth subtreatment plan and the mth subcontour along with the mth subdose calculation result to the treatment plan terminal. The particle beam therapy planning system according to claim 9.   11. The particle beam treatment planning system according to claim 10, wherein, upon receiving a plan selection request, the treatment plan terminal displays a dose calculation result corresponding to a treatment plan designated by a user.   10. The particle beam treatment planning system according to claim 9, wherein the respiratory synchronization dose evaluation terminal displays a dose calculation result corresponding to a treatment plan designated by a user when receiving a plan selection request.   The said treatment plan terminal will transmit the said main dose calculation result to the said respiratory synchronous dose evaluation terminal in addition to the said main treatment plan and the said main outline, if the said treatment plan transmission request | requirement is received. The described particle beam therapy planning system.   14. The particle beam treatment planning system according to claim 13, wherein the respiratory synchronization dose evaluation terminal displays a dose calculation result corresponding to a treatment plan designated by a user when receiving a plan selection request.   The respiratory synchronized dose evaluation terminal, when receiving a treatment plan registration request, transmits a corresponding dose calculation result and contour to the treatment plan data management device together with a treatment plan designated by a user. The particle beam treatment planning system described in 1.

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