Description:FIELD OF THE INVENTION [001] The present invention relates to the field of medical science, and more particularly, the present invention relates to Intraluminal dosimetry slab phantom which is the replica of the structures located in the thoracic cavity of the patient body.
BACKGROUND FOR THE INVENTION:
[002] The following discussion of the background to the invention is intended to facilitate an understanding of the present invention. However, it should be appreciated that the discussion is not an acknowledgment or admission that any of the material referred to was published, known, or part of the common general knowledge in any jurisdiction as of the priority date of the application. The details provided herein the background if belongs to any publication is taken only as a reference for describing the problems, in general terminologies or principles or both of science and technology in the associated prior art.
[003] Radiation dosimetry is difficult to perform in the actual patient in the Brachytherapy treatment so to simulate the actual patient’sbody we required a phantom almost equivalent to the body tissue which can be used for dosimetry. Following are some of the prior art documents where the thoracic phantoms have been made evaluating the doses in the thorax cavity from an external radiation source with the help of some dosimeters placed inside it.
[004] One of the prior art EP documents 31,84,047A1 discloses a phantom for radiation dosimetry. Phantom for radiationdosimetry comprises a main body of material, a receptacle having the shape of a developable surface, and a radiation-sensitive film located in the said receptacle, the main body of material comprises one or more radiation detectors each for measuring a dose received at a location of said radiation sensitive film. The invention also relates to the method for calibrating a radiation-sensitive film used in the phantom according to the invention.
[005] Another prior art CN document 108,367,158A discloses a phantom device for radiation dosimetry that comprises a base plate having a plurality of installation grooves in which a plurality of dosimeters are installed; a cover plate having a plurality of cover grooves covering the plurality of dosimeters, so as to cover the base plate; and a photosensitive plate stacked on the base plate with the cover plate therebetween, and having a radiation photoconductor embedded therein. In addition, the phantom device for radiation dosimetry, according to the invention, comprises a measurement unit including a dosimeter for measuring a radiation dose and distribution, at least one plate having the photoconductor; and a support unit having at least one link means and/or adsorption means so as to support the measurement unit such that the posture of the measurement unit is fixed. According to this configuration, accurate radiation dosimetry is possible in various environments, such that treatment accuracy can be improved in accordance with an improvement in prediction accuracy of a radiation dose to be irradiated at a patient during treatment.
[006] Another closest prior art KR document 20,150,062,640A discloses a phantom for radiation path identification that relates to a phantom for radiation path identification capable of not only measuring dosimetry but also identifying a radiation path to allow an analysis of the effects of radiation on a normal tissue to set up adequate radiation treatment planning.
[007] In light of the foregoing, there is a need for the intraluminal dosimetry slab phantom which is the replica of the structures located in the thoracic cavity of the patient’s body that overcomes problems prevalent in the prior art.
OBJECTS OF THE INVENTION:
[008] Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows.
[009] The principal object of the present invention is to overcome the disadvantages of the prior art by providing the Intraluminal dosimetry slab phantom.
[010] An object of the present invention is to provide the Intraluminal dosimetry slab phantom, wherein the phantom is the replica of the structures located in the thoracic cavity of the patient body.
[011] Another object of the present invention is to provide the Intraluminal dosimetry slab phantom that makes radiation dosimetry easy.
[012] Another object of the present invention is to provide the Intraluminal dosimetry slab phantom, wherein the phantom includes main anatomical structuressuch as Left Lung, Right Lung, Heart, Esophagus, Aorta, Sternum, and spinal cord for dosimetry.
[013] Another object of the present invention is to provide the Intraluminal dosimetry slab phantom, wherein the tissue equivalent materials are chosen for the structures on the basis of tissue density and cost-effectiveness.
[014] Another object of the present invention is to provide the Intraluminal dosimetry slab phantom, wherein radiation doses to the organs at risk nearby the tumor is evaluated while the radiation source is in the phantom and emitting radiation.
[015] Another object of the present invention is to provide the Intraluminal dosimetry slab phantom that is used to verify a treatment plan created in the treatment planning computer system with the same plan actually delivered on the HDR machine for Intraluminal brachytherapy.
[016] Another object of the present invention is to provide the Intraluminal dosimetry slab phantomthat is utilized as a quality assurance tool in the brachytherapy of thoracic sites to compare the organs at risk doses, calculated in Treatment Planning System (TPS) and measured in a tissue equivalent phantom designed for the thoracic site at different locations.
[017] Another object of the present invention is to provide the Intraluminal dosimetry slab phantom that is helpful in accurate treatment delivery and improvement in the quality of life of the patient in brachytherapy.
[018] Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY OF THE INVENTION: [019] The present invention provides an intraluminal dosimetry slab phantom.The phantom is the replica of the structures located in the thoracic cavity of the patient body. The phantom makes radiation dosimetry easy. The radiation dose to the organs at risk nearby the tumor is evaluated while the radiation source is in the phantom and emitting radiation. The phantom is used to verify a treatment plan created in the treatment planning computer system with the same plan is actually delivered on the HDR machine for Intraluminal brachytherapy. The phantom is utilized as a quality assurance tool in the brachytherapy of thoracic sites to compare the organs at risk doses, calculated in Treatment Planning System (TPS) and measured in a tissue equivalent phantom designed for the thoracic site at different locations.
The phantom is helpful in accurate treatment delivery and improvement in the quality of life of the patient in brachytherapy.
[020] In one aspect of the present invention, the phantom includes main anatomical structuressuch as Left Lung, Right Lung, Heart, Esophagus, Aorta, Sternum, and spinal cord for dosimetry.
[021] According to an embodiment of the present invention, the phantom comprises a block simulating the Tumor tissue with a source catheter cavity; two side portion blocks simulating the Lung Tissue made of Polyurethane Material; middle portion simulating prototype of organs such as Heart, Esophagus, Aorta, Pulmonary Trunk, Coronary Artery and Spinal cord made of Poly Methyl Meth Acrylate (PMMA) material; and two slabs simulating sternum and vertebra bone tissue made of Poly-oxy-methylene (Delrin) material.
[022] According to an embodiment of the present invention, the block simulating the Tumor tissue is made of Poly Methyl Meth Acrylate (PMMA) material.
[023] According to an embodiment of the present invention, the two side portion blocks simulating the Lung Tissue are made of Polyurethane Material.
[024] According to an embodiment of the present invention, the middle portion simulating prototype of organs is made of Poly Methyl Meth Acrylate (PMMA) material.
[025] According to an embodiment of the present invention, the two slabs simulating sternum and vertebra bone tissue are made of Poly-oxy-methylene (Delrin) material.
[026] According to an embodiment of the present invention, the tissue equivalent materials are chosen for the structures on the basis of tissue density and cost-effectiveness.
BRIEF DESCRIPTION OF DRAWINGS:
[027] Reference will be made to embodiments of the invention, examples of which may be illustrated in accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in the context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments. [028] Figure 1: Showing a cross-section axial view of the Phantom design simulated with structures; [029] Figure 2: Showing a cross section sagittal view of the Phantom with midline portion of the phantom; [030] Figure 3:A flow chart for design method of phantom; [031] Figure 4: A block diagram of components used in method of Figure 3; [032] Figure 5: Views of Phantom Blocks and Slabs.
DETAILED DESCRIPTION OF DRAWINGS:
[033] While the present invention is described herein by way of example using embodiments and illustrative drawings, those skilled in the art will recognize that the invention is not limited to the embodiments of drawing or drawings described and are not intended to represent the scale of the various components. Further, some components that may form a part of the invention may not be illustrated in certain figures, for ease of illustration, and such omissions do not limit the embodiments outlined in any way. It should be understood that the drawings and the detailed description thereto are not intended to limit the invention to the particular form disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternatives falling within the scope of the present invention as defined by the appended claim.
[034] As used throughout this description, the word "may" is used in a permissive sense (i.e. meaning having the potential to), rather than the mandatory sense, (i.e. meaning must). Further, the words "a" or "an" mean "at least one” and the word “plurality” means “one or more” unless otherwise mentioned. Furthermore, the terminology and phraseology used herein are solely used for descriptive purposes and should not be construed as limiting in scope. Language such as "including," "comprising," "having," "containing," or "involving," and variations thereof, is intended to be broad and encompass the subject matter listed thereafter, equivalents, and additional subject matter not recited, and is not intended to exclude other additives, components, integers, or steps. Likewise, the term "comprising" is considered synonymous with the terms "including" or "containing" for applicable legal purposes. Any discussion of documents, acts, materials, devices, articles, and the like are included in the specification solely for the purpose of providing a context for the present invention. It is not suggested or represented that any or all these matters form part of the prior art base or were common general knowledge in the field relevant to the present invention.
[035] In this disclosure, whenever a composition or an element or a group of elements is preceded with the transitional phrase “comprising”, it is understood that we also contemplate the same composition, element, or group of elements with transitional phrases “consisting of”, “consisting”, “selected from the group of consisting of, “including”, or “is” preceding the recitation of the composition, element or group of elements and vice versa.
[036] The present invention is described hereinafter in conjunction with figures 1-5 by various embodiments with reference to the accompanying drawing, wherein reference numerals used in the accompanying drawing correspond to the like elements throughout the description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiment set forth herein. Rather, the embodiment is provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those skilled in the art. In the following detailed description, numeric values and ranges are provided for various aspects of the implementations described. These values and ranges are to be treated as examples only and are not intended to limit the scope of the claims. In addition, several materials are identified as suitable for various facets of the implementations. These materials are to be treated as exemplary and are not intended to limit the scope of the invention. [037] The present invention provides an intraluminal dosimetry slab phantom. The phantom is the replica of the structures located in the thoracic cavity of the patient body. The phantom makes radiation dosimetry easy. The radiation dose to the organs at risk nearby the tumor is evaluated while the radiation source is in the phantom and emitting radiation. The phantom is used to verify a treatment plan created in the treatment planning computer system with the same plan is actually delivered on the HDR machine for Intraluminal brachytherapy. The phantom is utilized as a quality assurance tool in the brachytherapy of thoracic sites to compare the organs at risk doses, calculated in Treatment Planning System (TPS) and measured in a tissue equivalent phantom designed for the thoracic site at different locations. The phantom is helpful in accurate treatment delivery and improvement in the quality of life of the patient in brachytherapy.
[038] According to an embodiment of the present invention as seen in figure 5, the phantom comprises a block simulating the Tumor tissue with a source catheter cavity; two side portion blocks simulating the Lung Tissue made of Polyurethane Material; middle portion simulating prototype of organs such as Heart, Esophagus, Aorta, Pulmonary Trunk, Coronary Artery and Spinal cord made of Poly Methyl Meth Acrylate (PMMA) material; and two slabs simulating sternum and vertebra bone tissue made of Poly-oxy-methylene (Delrin) material.
[039] According to an embodiment of the present invention, the block simulating the Tumor tissue is made of Poly Methyl Meth Acrylate (PMMA) material. The two side portion blocks simulating the Lung Tissue are made of Polyurethane Material. The middle portion simulating prototype of organs is made of Poly Methyl Meth Acrylate (PMMA) material. The two slabs simulating sternum and vertebra bone tissue are made of Poly-oxy-methylene (Delrin) material. The tissue equivalent materials are chosen for the structures on the basis of tissue density and cost-effectiveness. [040] The advantage of providing the intraluminal dosimetry slab phantom.
- The phantom makes radiation dosimetry easy. - The radiation dose to the organs at risk nearby the tumor isevaluated while the radiation source is in the phantom and emitting radiation. - The phantom is used to verify a treatment plan created in the treatment planning computer system with the same plan is actually delivered on the HDR machine for Intraluminal brachytherapy. - The phantom is utilized as a quality assurance tool in the brachytherapy of thoracic sites to compare the organs at risk doses, calculated in Treatment Planning System (TPS) and measured in a tissue equivalent phantom designed for the thoracic site at different locations. - The phantom is helpful in accurate treatment delivery and improvement in the quality of life of the patient in brachytherapy.
- The phantom is economical and easy to use.
[041] The disclosure has been described with reference to the accompanying embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein.
[042] The foregoing description of the specific embodiments so fully revealed the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the scope of the embodiments as described herein. , Claims:1) An Intraluminal dosimetry slab phantom, the phantom comprises: - a block simulating the Tumor tissue with a source catheter cavity; - two side portion blocks simulating the Lung Tissue made of Polyurethane Material;
- middle portion simulating prototype of organs such as Heart, Esophagus, Aorta, Pulmonary Trunk, Coronary Artery and Spinal cord; and - two slabs simulating sternum and vertebra bone tissue.
2) The phantom as claimed in claim 1, wherein the block simulating the Tumor tissue is made of Poly Methyl Meth Acrylate (PMMA) material.
3) The phantom as claimed in claim 1, wherein the two side portion blocks simulating the Lung Tissue are made of Polyurethane Material.
4) The phantom as claimed in claim 1, wherein the middle portion simulating prototype of organs is made of Poly Methyl Meth Acrylate (PMMA) material.
5) The phantom as claimed in claim 1, wherein the two slabs simulating sternum and vertebra bone tissue are made of Poly-oxy-methylene (Delrin) material.