KR101018880B1 - Deformable lung phantom device for 4D image registration - Google Patents

Abstract

The present invention relates to a deformable closed phantom device for dynamic image registration. It has a sealed inner space filled with water and takes the form of a main case in which the volume of the inner space is controlled, a balloon having a spout portion and a receiving portion, and is housed in a water submerged state inside the main case and is elastic. It has a resilient pouch having, and the interior of the resilient pouch is filled with a resilient resilience, and one or more mimic member that is embedded in the interior of the interior and is distributed in the image obtained through the imaging and the lungs in the human body A phantom comprising a simulated lung model; By repeatedly changing the volume of the main case to increase or decrease the water pressure applied to the pulmonary body is composed of a drive unit to simulate the operation pattern according to the actual lung respiration.

The present invention made as described above, can be used in the performance evaluation of the image recording apparatus capable of realizing the dynamic pattern of the lung changes in response to breathing, and in particular, the structure is simple and the production cost is low, so feel free to use Can be.

Dynamic Video, 4D, Registration, Phantom, Image Registration

Description

Deformable lung phantom device for 4D image registration

The present invention includes a phantom that is mounted on various medical imaging apparatuses and photographed by the photographing apparatus, and in particular, since the volume of the phantom is deformed according to breathing, a dynamic pattern of a moving lung can be realized, thereby enabling 4D imaging. The present invention relates to a deformable lung phantom device for dynamic image registration that can be used for performance evaluation of a medical imaging apparatus.

In addition, the present invention is derived from the research conducted as part of the technology infrastructure construction project and nuclear technology development project of the Seoul Metropolitan Government and the Korea Science Foundation. [Task No. 10550, M20706000007-07M0600-00710. Project Title: Innovation Cluster for Advanced Medical Imaging Technology Development, Next Generation Intelligent Radiation Therapy Planning System]

With the rapid development of science and technology, medical equipment has also been advanced, and various procedures and diagnostics, which were not possible in the past, have become possible one by one. Among these medical equipment, there is an imaging device that can observe the condition inside the human body in more detail.

The imaging apparatus includes, for example, computed tomography (CT), magnetic resonance imaging (MRI), nuclear medical imaging (SPECT), positron emission tomography (PET), and the like to diagnose and treat various tumors. Plays an important role. The CT device, MRI device, SPECT device, or PET device have different advantages and disadvantages in terms of photographing principle, and thus, a photographing device that displays images well according to a diagnosis purpose is selectively used.

In particular, in recent years, the above-described photographing apparatus has been further developed to develop a CT apparatus, an MRI apparatus, or a PET apparatus capable of photographing 4D images, so-called dynamic images. Thanks to the 4D imaging device described above, it is possible to acquire and view dynamic images of organs that change according to breathing (with conventional CT or MRI image quality), as well as to observe blood vessel morphology and blood circulation in the head or body. The effect can be further enhanced.

On the other hand, since the photographing apparatus should photograph moving objects, the continuous shooting performance should be good and there should be no distortion or distortion in the obtained image.

In order to guarantee the continuous shooting performance of such a photographing apparatus or the accuracy of the acquired image, the photographing apparatus should be kept in the best state. That is, in order to verify the performance suitability and precision of the photographing apparatus, it is necessary to analyze the image contents photographed through the photographing target and to compare each other through the image matching process.

The image registration process is a process of overlapping by moving a dynamic image of the same region taken by different imaging apparatuses to a reference coordinate on a computer monitor. Through this image registration, it is possible to find out the operation precision of each photographing apparatus, and based on this, quality control of the photographing apparatus can be performed.

However, for the purpose of quality control of the photographing apparatus, the phantom is used as a tool for a person because a person cannot be a photographing object. The phantom is a photographing target photographed by the photographing apparatus, and enables to obtain one's own image through the photographed image, as well as matching and other necessary operations between the obtained images.

However, since the conventional phantom is simply photographed in a stationary state, even if the photographing apparatus continuously photographs the phantom, the same image is inevitably obtained, and thus there is a problem that the continuous photographing performance of the photographing apparatus cannot be accurately determined. In other words, with the conventional phantoms, it is possible to grasp the basic resolution capability and the degree of image distortion of the 4D photographing apparatus, but it is not possible to evaluate the resolution of the image accompanying the movement.

The present invention has been created to solve the above problems, can be used in the performance evaluation of the imaging device capable of capturing dynamic images to implement the dynamic pattern of the lungs that change according to breathing, in particular the structure is simple and low production cost It is an object of the present invention to provide a deformable closed phantom device for dynamic image registration that can be used casually.

The deformable lung phantom device for dynamic image registration according to the present invention for achieving the above object is a photographed object mounted on a medical imaging apparatus, and has a closed inner space filled with water and the volume of the inner space is adjusted. It takes the form of a main case, a spout portion and a balloon having a receiving portion and is contained in the water submerged state in the inside of the main case and the elastic bag having elasticity, filled with the receiving portion of the elastic bag and has elastic restorability It has a built-in material and one or more simulation members that are embedded in the interior material and distributed in the image obtained through photographing, and whose volume changes according to the volume change of the main case, thereby simulating the lungs in the human body. A phantom containing a lung mimetic; By repeatedly changing the volume of the main case to increase or decrease the water pressure applied to the pulmonary mimetic is characterized in that the pulsatile body is composed of a drive unit to simulate the operation pattern according to the actual lung breathing.

In addition, the main case; The spout of the resilient pouch has a case body with both ends open, a sealing cover for hermetically coupling to one end of the case body, and at least one through path penetrated in the thickness direction of the sealing cover. A porous holder for opening the inner space of the resilient bag to the outside through the through passage by being inserted into the portion, an elastic membrane member covering the other end of the case body to seal the inner space of the case body, and the elastic membrane member between the porous holder. And a pressing plate having a through hole at the center thereof, the elastic membrane member being tightly fixed to the case body by being coupled to the other end of the case body. It characterized in that it comprises a pressing plate for contacting the outer surface of the elastic membrane member through the through hole of the pressing plate, and the driving means for increasing the water pressure inside the main case by entering the pressing plate in the inward direction of the main case.

In addition, the driving means; A motor which is spaced apart from the phantom and driven by electric power provided from the outside, a rotating plate fixed to the drive shaft of the motor, and a pin connected to an eccentric position of the rotating plate and extending toward the pressure plate to pin the pressure plate It characterized in that it comprises a drive rod for converting the rotational movement of the pressure plate into a reciprocating motion.

In addition, the porous holder is in the form of a cylinder in which a plurality of parallel through-path is formed, the portion of which is inserted into the spout portion of the elastic bag in a state where the part protrudes into the inner space of the main case to the spout portion It is tightened by elasticity, and when the elastic bag shrinks, the air inside the elastic bag is discharged to the outside of the main case, and when the elastic bag is restored to its original state, the external air is guided into the elastic bag.

In addition, the inside of the main case, the holding case including a cylindrical portion having a constant diameter and receiving the waste mimetic body therein, and a flat portion fixed to one end of the cylindrical portion and in close contact with the inner side of the elastic membrane member It is characterized in that the further provided.

In addition, the inner circumferential surface of the cylindrical portion is characterized in that a plurality of supporting members for separating the waste mimic body accommodated in the cylindrical portion from the inner circumferential surface of the cylindrical portion.

In addition, the plate of the pressing plate and the holding case is characterized in that the mutual fixing through the elastic membrane member.

In addition, the inner side of the flat plate portion is further provided with a pressurizing support portion protruding toward the closed mimic body side, the inside of the resilient bag, the pressurizing support portion is further provided with a support member for receiving a support force from the pressurizing support portion when pressing the waste mimetics It is characterized by.

The deformable lung phantom device for dynamic image registration according to the present invention made as described above can implement a dynamic pattern of the lung that changes according to breathing, and thus can be used for performance evaluation of an image photographing apparatus capable of capturing dynamic images, in particular, a structure It is easy to use because it is simple and the production cost is low.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the overall configuration of a deformable closed phantom device for dynamic image registration according to an embodiment of the present invention.

As shown, the deformable closed phantom device 11 for dynamic image registration according to the present embodiment includes a base frame 13 having a horizontal flat plate shape, and a pedestal fixed to one side of the base frame 13. A phantom 25 mounted on the 42, a motor 17 installed on the other side of the base frame 13 and operated by electricity supplied from the outside, and a controller 15 for driving the motor 17. And a driving rod 19 having both ends connected to the pins 19a at the motor 17 and the phantom 25.

The base frame 13 is a support plate made of acrylic and has a motor 17, a controller 15, and a phantom 25 on an upper surface thereof. The motor 17, the controller 15, and the phantom 25 constitute one set of one phantom device 11. The controller 15 serves to turn on or off the motor 17 or adjust the rotational speed of the rotating plate 17b. In fact, the controller 15 and the motor 17 are known.

The motor 17 is fixed to the support 17c and positioned horizontally. In addition, a rotating plate 17b having a constant diameter is fixed to the drive shaft 17a of the motor 17. The rotating plate 17b is connected to the drive rod 19 and the pin 19a at an eccentric position as a disc having a constant diameter and thickness.

On the other hand, the phantom 25 is made of acrylic and the main case 27 is horizontally seated on the pedestal 42, and the holding case is built in the interior of the main case 27 to reciprocate (37 in Figure 2 And a closed mimetic body (33 in FIG. 6) which is built in the holding case 37 and whose volume changes in accordance with the pressure change inside the main case 27. In particular, the inside of the main case 27 is filled with water.

The basic configuration of the main case 27 is a hermetic seal case which is openly coupled to the cylindrical case body 27a having both ends open, and to the rear end of the case body 27a (the opposite end in the direction toward the motor 17). Cover 27f, an elastic membrane member (31 in FIG. 2) to be covered in front of the case body 27a, and a ring shape covering the elastic membrane member 31 and coupled to the end of the airtight cover 24f. It consists of the crimping plate 27b of this. The detailed configuration of the phantom 25 will be described later with reference to FIG. 3.

The elastic membrane member 31 is exposed to the outside through the through hole 27c formed in the center of the pressing plate 27b. The pressing plate 29 is in close contact with the outer surface of the elastic membrane member 31. In addition, the connector 23 and the rod holder 21 are coupled to the outer surface of the pressure plate 29.

The rod holder 21 is a member connected to the pin 19a at the other end of the driving rod 19 and coupled to the connector 23. In addition, the connector 23 serves to fix the rod holder 21 relative to the pressure plate 29.

As described above, both ends of the driving rod 19 having a predetermined length are connected to the rotating plate 17b and the rod holder 21, respectively, to the pins 19a, for example, as the rotating plate 17b rotates in the direction of the arrow a. 21) reciprocates in the direction of arrow b.

The pressure plate 29 receives the rotational torque of the motor 17 through the driving rod 19 to reciprocate in the direction of arrow b, pushes the elastic membrane member 31 and enters the inside of the main case 27. Repeat the movement to return in the opposite direction. As the pressure plate 29 pushes the elastic membrane member 31 and moves to the inner space of the main case 27, the water pressure inside the main case 27 increases. This is described in detail later.

2 is a perspective view illustrating a detailed structure of the phantom shown in FIG. 1, and FIG. 3 is a cross-sectional view of the phantom.

Referring to the drawings, the phantom 25 applied to the present embodiment includes a main case 27 accommodating water, a holding case 37 reciprocally installed in the main case 27, and The closed model body 33 located inside the holding case 37 and the pressure plate 29 that receives the power of the motor 17 to adjust the volume of the main case 27 from the outside of the main case 27. It can be seen that it is configured.

The main case 27 includes a cylindrical case body 27a having a constant diameter at both ends, an airtight cover 27f sealingly coupled to the rear end of the case body 27a, and the airtight cover 27f. A porous holder 35 detachably fixed to a central portion, an elastic membrane member 31 covering the inner space of the main case 27 and covering the front end of the main case 27, and the elastic membrane member 31; The pressing plate 27b is fixed to the front end surface of the main case 27 with the interposed therebetween.

A plurality of female screw holes 27e are formed at both end surfaces of the main case 27. The female threaded ball 27e is a hole to which the bolt 28 for coupling the pressing plate 27b and the sealing cover 27f to the case body 27a is engaged.

The elastic membrane member 31 is a waterproof sheet of a material having elasticity and can be stretched by an external force. For example, it can be made of silicone or rubber or various synthetic resins. In addition, a through hole 31a through which the connecting portion 29d of the pressure plate 29 passes is formed at the center of the elastic membrane member 31, and a bolt hole 31b through which the bolt 28 passes is formed at the edge portion thereof. It is prepared.

Since the elastic membrane member 31 is pressed toward the flat plate portion 37b by the pressing protrusion 29c of the pressing plate 29 as shown in FIG. 3, there is no fear of water leaking out through the through hole 31a. .

The pressing plate 27b takes the form of a ring and is coupled to the case body 27a with the elastic membrane member 31 interposed therebetween so that the elastic membrane member 31 completely fills the inner space of the main casing 27. Keep tight. As shown in FIG. 3, the elastic membrane member 31 is compressed in a state of being sandwiched between the pressing plate 27b and the case body 27a and serves as a seal itself. Reference numeral 27d denotes a bolt hole through which the bolt 28 passes.

On the other hand, the sealing cover (27f) is a cover coupled to the rear end of the case body (27a) through the bolt (28). A bolt hole 27g through which the bolt 28 passes and a seal 49 are provided in the edge portion of the airtight cover 27f, and a mounting hole 27k is formed in the center portion.

In addition, two water injection holes 27n are provided in the mounting holes 27k. The water injection hole 27n is a passage for injecting water into the main case 27 or discharging the injected water to the outside. The water inlet 27n is closed by a stopper 27p.

The porous holder 35 is fixed to the mounting hole 27k. The porous holder 35 is a substantially cylindrical member made of acrylic and hermetically coupled to the mounting hole 27k. A plurality of through paths 35d are formed in the porous holder 35.

The through passage 35d is an air hole extending in the thickness direction of the sealing cover 27f in parallel with each other. The space inside the waste mimic 33 to be described later communicates with the outside of the main case 27 through the through passage 35d. The basic role of the porous holder 35 is to maintain the internal air pressure of the waste mimetic body 33 to atmospheric pressure through the through passage 35d.

On the outer circumferential surface of the porous holder 35, a male screw portion 35c and an elastic pocket fixing portion 35a are formed. The male screw portion 35c is a portion engaged with the female screw thread formed on the inner circumferential surface of the mounting hole 27k. In addition, the elastic bag fixing portion 35a is inserted into the spout portion 33m of the elastic bag 33a as shown in FIG. 4 and is elastically tightened by the spout portion 33m.

In particular, a plurality of locking projections 35b are formed on the outer circumferential surface of the elastic bag fixing part 35a. The locking protrusion 35b is a ring-shaped protrusion that meets one turn along the circumferential direction of the elastic bag fixing part 35a, and prevents the elastic bag 33a from slipping out of the porous holder 35.

The holding case 37 installed inside the main case 27 is a cylindrical element open to the porous holder 35 side. The holding case 37 has a cylindrical portion 37a having a predetermined diameter and open at both ends, a flat plate portion 37b fixed to one end of the cylindrical portion 37a, and an inner surface of the flat plate portion 37b. It consists of the pressurizing support part 37c located in the side.

The central axis of the cylindrical portion 37a is the same as the central axis of the case body 27a. To this end, a support member 39 is provided between the cylindrical portion 37a and the case body 27a. The support member 39 is a rod-shaped member that maintains the inner circumferential surface of the case body 27a and the outer circumferential surface of the cylindrical portion 37a at regular intervals.

In addition, a plurality of support members 37d are fixed to the inner circumferential surface of the cylindrical portion 37a. The support member 37d serves to separate the waste mimic 33 accommodated in the holding case 37 from the inner circumferential surface of the cylindrical portion 37a.

A connection hole 37p is provided in the center of the flat plate portion 37b. The connection hole 37p is a hole through which the connection portion 29d of the pressure plate 29 passes. The connecting portion 29d is coupled to the pressing portion 37k through the connecting hole 37p.

In addition, a plurality of through holes 37e are formed in the edge portion of the flat plate portion 37b. The through hole 37e is a hole through which water passes. That is, when the holding case 37 moves in the arrow P direction of FIG. 7, the water inside the holding case 37 is discharged in the direction of the arrow c. As such water is allowed to escape, the resistance due to the reciprocating movement of the holding case 37 is small.

In addition, the inner surface of the flat plate portion 37b is provided with a pressing support portion 37c. The pressing support part 37c supports the closed mimic body 33 in the direction of arrow e while being in close contact with the inner surface of the flat plate part 37b by engaging with the connection part 29d. A sealing 40 is inserted between the plate portion 37b and the pressure support portion 37c to prevent the outflow of water.

A pressing portion 37k is formed at the tip of the pressing support portion 37c. The pressing portion 37k is a convex projecting portion (33g in Fig. 4) provided in the interior of the waste replica 33 (with the elastic pocket 33a interposed) and inserted into the waste replica. Do not let (33) rise by buoyancy. In addition, a female screw hole 37m for screwing into the connecting portion 29d is provided at the central shaft portion of the pressing support portion 37c.

In addition, the pressing plate 29 is fixed to the disk-shaped disk portion 29a having a constant diameter, and the central portion of the disk portion 29a and female threaded ball (37m) through the elastic membrane member 31 and the flat plate portion 37b It is made of a connecting portion (29d) coupled to.

The pressing plate 29 is in close contact with the outer surface of the elastic membrane member 31 in a state of being fitted inside the through hole 27c of the pressing plate 27b, as shown in FIG. As shown in FIG. 3, the elastic membrane member 31 is coupled to the pressing support portion 37c through the disc portion 29a and the flat plate portion 37b to press the elastic membrane member 31 toward the flat plate portion 37b. do. The elastic membrane member 31 is compressed in a state sandwiched between the disk portion 29a and the flat plate portion 37b.

In particular, a plurality of pressing projections 29c are formed in the disk portion 29a. The pressing protrusion 29c is a ring-shaped protrusion having a concentric circle to press the elastic membrane member 31 so that water does not leak between the elastic membrane member 31 and the flat plate portion 37b.

In addition, a connector mounting opening 29b is formed on the outer surface of the disk portion 29a. The connector mounting opening 29b is a hole in which a female thread is formed, and the connector 23 is fixed. The connector 23 is a connector of a circular cross section in which a male thread is formed on an outer circumferential surface of the connector for fixing the rod holder 21 to the pressure plate 29.

In addition, the connector 23 is formed with a female screw hole to which the rod holder 21 is coupled.

On the other hand, the waste mimetic 33, for simulating the lung (lung), the elastic bag 33a having elasticity, and the sponge (33b) filled in the interior of the elastic bag 33a and And a plurality of simulation members distributed in the sponge 33b. The replica member will be described later with reference to FIG. 4.

FIG. 4 is a view illustrating an internal structure of the waste mimetic shown in FIG. 3.

Referring to the drawings, the porous holder 35 is coupled to the mounting hole 27k of the airtight cover 27f, and the spout of the elastic bag 33a is attached to the elastic bag fixing part 35a of the porous holder 35. The part 33m is bitten.

The waste mimic body 33 includes an elastic bag 33a having a spout 33m and a receiving part 33n, a sponge 33b filled in the receiving part 33n of the elastic bag 33a, and It includes various kinds of simulation members that are embedded in the sponge 33b.

The elastic pouch 33a is a pouch formed of an elastic sheet such as silicone or rubber. Resilience means that the bag is artificially stretched and then released to return to its original state. For example, home rubber gloves are also elastic. The spout 33m is elastically in close contact with the outer circumferential surface of the resilient bag fixing part 35a so that water does not flow into the resilient bag 33a.

In addition, the sponge 33b is filled with the inside of the accommodating portion 33n as a general sponge to keep the accommodating portion 33n in a taut state. Pressing the receiving portion 33n from the outside enters the pressed portion and removes the pressing force is of course restored to the initial state.

In particular, some water is supplied into the accommodating portion 33n so that the sponge 33b contains water. In this way, the sponge 33b is filled with water, so that the density inside the receiving portion 33n is about 0.2 to 0.3 which is the same as the density inside the lung.

In addition, the simulation member includes beads 33c and 33d, an acrylic sphere 33e, a balloon 33f, and the like.

The beads 33c and 33d may be applied to plastic beads or glass beads, which simulate the alveoli inside the lungs. In addition, the acrylic sphere 33e is a spherical member made of acryl and simulates the tumor inside the lung.

In addition, the balloon 33f simulates a tumor in the same way as the acrylic sphere as the volume increases and decreases as the volume of the lung mimetic 33 increases. In particular, the balloon 33f is a conventional general (winding) balloon filled with water. The balloon 33f moves at the same time as the pulmonary mimetic 33 and its shape is changed, and it can be seen that the shape is changed through the captured image.

In particular, when the phantom device 11 is applied to a PET device, a radiation contrast agent is additionally injected into the balloon 33f.

The replica members appear in a dynamic image obtained through the image photographing apparatus. The operator can perform the above-described image registration on the basis of the individual movement of each of the copying members following the movement of the closed mimetic 33.

In addition, a supporting member 33g is provided at one side of the receiving portion 33n. The support member 33g is a ring-shaped member made of plastic and partially accommodates the pressing portion 37k in a state of being embedded in the sponge 33b. In this way, the support member 33g is supported by the pressurizing portion 37k so that the waste mimic body 33 does not float upward due to buoyancy.

5 is a cross-sectional view taken along the line VV of FIG. 1.

As shown, it can be seen that the holding case 37 is accommodated in the case body 27a, and the holding case 37 has a closed mimic body 33 embedded therein.

In addition, a support member 39 is provided between the inner circumferential surface of the case body 27a and the outer circumferential surface of the holding case 37. The support member 39 firmly supports the holding case 37 to prevent the holding case 37 from being eccentrically up, down, left, and right. In addition, the support member 37d provided on the inner circumferential surface of the holding case 37 supports the waste mimic 33.

6 and 7 are views for explaining the operation of the deformable closed phantom device for dynamic image registration according to an embodiment of the present invention.

Basically, the deformable pulmonary phantom device 11 for dynamic image registration according to the present embodiment is intended to move the pulmonary mimetic 33 in the same pattern as the breathing of the actual patient. In other words, the operation of reducing the volume of the waste mimic body 33 and increasing the volume thereof is repeated.

Referring to FIG. 6, it can be seen that water (w) is filled in the main case 27, and the closed mimic body 33 is accommodated in the holding case 37 while being submerged in water. In particular, the spout 33m of the elastic bag constituting the waste mimic 33 elastically squeezed the outer circumferential surface of the porous holder 35.

When the motor 17 is driven in this state to move the pressure plate 29 in the direction of the arrow P, the pressure plate 29 pushes the elastic membrane member 31 to enter the main case 27. At this time, the holding case 37 moves at the same time, and water in the inner region of the holding case 37 also exits the holding case 37 through the arrow c direction. In addition, a part of the air that has been filled inside the waste mimic 33 is discharged to the atmosphere through the through passage 35d.

In any case, as the pressure plate 29 enters the arrow P direction as described above, the water pressure inside the main case 27 increases, and the increased pressure is transmitted to the waste replica 33 in the direction of the arrow f and the waste replica 33 Squeeze. This mimics the lungs shrinking when they actually exhale.

As the pressure of the press plate 29 increases, the water pressure increases, so that the waste mimetic 33 is greatly reduced.

 When the pressure plate 29 moves in the opposite direction to the arrow P direction by the continuous operation of the motor 17, the water pressure inside the main casing 27 drops, and thus the waste mimic 33 expands to the initial state. It will be in the state of FIG. At this time, the air outside the main case 27 is sucked into the elastic bag 33a through the through passage 35d.

Eventually, as described above, the pressure plate 29 is repeatedly reciprocated in the direction of arrow P and vice versa, so that the lung replica 33 repeats contraction and expansion, thereby simulating the movement of the lung according to actual breathing. It will be possible.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

1 is a perspective view showing the overall configuration of a deformable closed phantom device for dynamic image registration according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating the configuration of the phantom shown in FIG. 1.

3 is a cross-sectional view illustrating an internal structure of the phantom illustrated in FIG. 1.

FIG. 4 is a view illustrating an internal structure of the waste mimetic shown in FIG. 3.

5 is a cross-sectional view taken along the line VV of FIG. 1.

6 and 7 are views for explaining the operation of the deformable closed phantom device for dynamic image registration according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

11: Phantom device 13: Base frame 15: Controller

17: motor 17a: shaft 17b: rotating plate

17c: support 19: drive rod 19a: pin

21: Rod holder 23: Connector 25: Phantom

27: main case 27a: case body 27b: compression plate

27c: Through hole 27d: Bolt hole 27e: Female threaded ball

27f: Airtight cover 27g: Bolt hole 27k: Mounting hole

27n: Water inlet 27p: Stopper 28: Bolt

29: Pressure plate 29a: Disk portion 29b: Connector mounting hole

29c: pressing projection 29d: connecting portion 31: elastic film member

31a: Through hole 31b: Bolt hole 33: Lung mimetic

33a: elastic pocket 33b: sponge 33c, 33d: beads

33e: Acrylic sphere 33f: Balloon 33g: Support member

33m: Spout 33n: Receptacle 35: Perforated holder

35a: elastic pocket government 35b: locking projection 35c: male thread

35d: passage 37: holding case 37a: cylinder

37b: flat plate portion 37c: pressure support portion 37d: support member

37e: Through hole 37k: Pressing part 37m: Female thread

37p: connection hole 39: support member 40: seal ring

42: stand

Claims (8)

delete A photographed object mounted on a medical imaging apparatus, the main case having a closed inner space filled with water and having a volume of the inner space controlled, a balloon having a spout and a receiving part, and the main case It is received in a state submerged in the water and the elastic bag having elasticity, the interior of the resilient bag is filled in the resilient resilience and the interior of the interior, and embedded in the interior of the interior material is distributed to the image obtained through photography A phantom having one or more mimetic members appearing, the phantom including a lung mimetic body that changes in volume according to the volume change of the main case and simulates the lungs in the human body; It includes a drive unit to repeatedly change the volume of the main case to increase or decrease the water pressure applied to the pulmonary mimetics to simulate the operation pattern according to the actual lung breathing, The main case is; Case body with both ends open, An airtight cover sealingly coupled to one end of the case body; A porous holder which is provided at the center of the sealing cover and has at least one through passage penetrating in the thickness direction of the sealing cover and is fitted into the spout of the resilient bag to open the inner space of the resilient bag to the outside through the through passage; , An elastic membrane member covering the other end of the case body to seal an inner space of the case body; And a pressing plate having a through-hole formed in the center of the elastic membrane member by being coupled to the other end of the case body with the elastic membrane member interposed therebetween. The driving unit; A pressure plate for contacting the outer surface of the elastic membrane member through the through hole of the pressing plate; And a driving means for entering the pressure plate in the inward direction of the main case to increase water pressure inside the main case. 3. The method of claim 2, The drive means; A motor spaced apart from the phantom and driven by electric power provided from the outside; A rotating plate fixed to the drive shaft of the motor; A deformable closed phantom device for dynamic image registration comprising a drive rod pinned to an eccentric position of the rotating plate and extending toward the pressing plate to be connected to the pressing plate to convert a rotational movement of the rotating plate into a reciprocating motion of the pressing plate. . 3. The method of claim 2, The porous holder takes the form of a cylinder in which a plurality of parallel passages are formed, and a portion thereof is inserted into the spout of the resilient pouch with a portion protruding into the inner space of the main case to be elastic by the spout. When the elastic bag contracts, the air inside the elastic bag is discharged to the outside of the main case, and when the elastic bag is restored to its original state, it is possible to deform for dynamic image registration, which induces external air into the elastic bag. Waste phantom device. 3. The method of claim 2, The main case further has a holding case including a cylindrical portion having a predetermined diameter and accommodating the waste mimetic body therein, and a flat portion fixed to one end of the cylindrical portion and in close contact with an inner surface of the elastic membrane member. Deformable lung phantom device for dynamic image registration, characterized in that the. The method of claim 5, Deformable closed phantom device for dynamic image registration, characterized in that the inner peripheral surface of the cylindrical portion is provided with a plurality of support members for separating the waste mimic body accommodated in the cylindrical portion from the inner peripheral surface of the cylindrical portion. The method of claim 5, Deformable closed phantom device for dynamic image registration, characterized in that the plate of the pressing plate and the holding case is fixed to each other through an elastic membrane member. The method of claim 5, In the center of the inner surface of the flat plate portion is further provided with a pressing support portion protruding toward the waste mimic body, The inside of the resilient pouch, the deformable lung phantom device for dynamic image registration, characterized in that the support member is further provided with a support force from the pressure support when the pressure support unit presses the waste mimetics.

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