Incremental treatment planning

A technology of treatment planning and planning, which is applied in the direction of X-ray/γ-ray/particle irradiation therapy, etc., can solve the problem that it is difficult for the treatment planner to find the target or constraint, and achieve the effect of reducing calculation time

Active Publication Date: 2016-10-12
RAYSEARCH LAB
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Problems solved by technology

[0003] In addition, if the dose distribution of the optimized treatment plan is satisfactory in most cases, but still includes some minor flaws, it is n

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Embodiment Construction

[0020] Treatment planning is typically performed on the basis of internal images of the patient, such as computed tomography (CT), and is based on internal structures defined and segmented in these images. Figures 3A-3C is a schematic representation of a two-dimensional image of a patient (eg, associated with a slice of a CT scan). The three-dimensional representation of the patient is often discretized into multiple voxels for dose calculation and treatment planning purposes.

[0021] figure 1 is a flowchart of a method according to an embodiment of the present invention. In step 101, data related to the results of initial treatment planning is acquired. Initial treatment planning results include at least the initial planned dose. Initial treatment planning may involve traditional forward treatment planning, where a treatment planner defines treatment parameter settings, eg based on experience, and calculates resulting doses. The treatment planner can revise parameters a...

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Abstract

A method for generating a radiotherapy treatment plan for a patient is provided. The treatment plan is optimized by using an optimization objective which is at least partly based on an initially planned dose to the patient.

Description

technical field [0001] The present invention relates to radiotherapy treatment planning, and in particular to optimization of radiotherapy treatment plans. Background technique [0002] In radiation therapy, the aim is usually to deliver a sufficiently high radiation dose to a target (eg, a tumor) in a patient while sparing as much surrounding normal tissue as possible. Especially dose minimization to sensitive organs close to the target is important. A treatment plan defining treatment parameters such as treatment machine settings, which is typically used for a radiation therapy session, is usually determined with the aid of a computer-based treatment planning system. In inverse treatment planning, an optimization algorithm is used to find a treatment parameter set that produces an acceptable dose distribution within the target, preferably satisfying all of the clinical goals defined by the clinician. However, the treatment plan optimization process does not in any way gu...

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Application Information

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IPC IPC(8): A61N5/10
Inventor 谢尔·埃里克松
Owner RAYSEARCH LAB
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