KR20190001503U - Phantom unit for measuring ultrasonic bone density - Google Patents

Abstract

A cylindrical phantom body portion according to one embodiment of the present invention. And a phantom engaging portion protruding from both ends of the phantom body portion and including a seating portion in which an outer peripheral surface is recessed toward the inside of the phantom body portion.

Description

[0001] PHANTOM UNIT FOR ULTRASOUND BONE DENSITY MEASUREMENT [0002] PHANTOM UNIT FOR MEASURING ULTRASONIC BONE DENSITY [0003]

The present invention relates to a phantom unit for measuring an ultrasonic bone density, and more particularly to a phantom unit for use in an ultrasonic bone density measuring apparatus having different types of transducers.

Bone density is a numerical value that literally represents the density of bone, and is one of the factors necessary to diagnose osteoporosis. Recently, a method using ultrasound has been frequently used to measure bone density.

The ultrasonic bone density measuring device uses a transducer that converts electric energy into ultrasonic energy and collects the measurement at a desired point.

In this case, a phantom for measuring bone density to be applied to a transducer manufactured in various shapes for each measurement device is used. Phantom is also manufactured in various forms according to the type of transducer.

However, it can be very inefficient in terms of time and cost if different phantoms are manufactured according to the type of transducer of the measuring apparatus every time.

Therefore, it is necessary to develop a phantom commonly applicable to each ultrasonic bone density measuring device.

As a related prior art, Korean Patent Registration No. 10-0922724 (titled: phantom device for standardization of ultrasound imaging equipment and ultrasound image acquisition method using the phantom device, registered on October 14, 2009) .

The present invention provides a phantom unit for ultrasonic bone density measurement that can be universally used regardless of the different shape and positional changes of the transducers of the ultrasonic bone density measuring device by realizing a part of the phantom body having a concave shape.

The present invention also provides a phantom unit for ultrasonic bone density measurement, which further realizes a supporting body for supporting the phantom body so that the phantom body is more firmly coupled to the transducer of the ultrasonic bone density measuring apparatus.

The task to be solved by the present invention is not limited to the above-mentioned task (s), and another task (s) not mentioned may be clearly understood by those skilled in the art from the following description.

The phantom unit for measuring an ultrasonic bone density according to an embodiment of the present invention includes a cylindrical phantom body portion and a phantom engaging portion protruding from both end portions of the phantom body portion and having a seating portion in which an outer peripheral surface is recessed toward the inside of the phantom body portion. .

In addition, the seat according to one embodiment of the present invention may be recessed to converge toward the center of the interior of the phantom body portion.

In addition, the phantom coupling unit according to an embodiment of the present invention may further include a sub-seating portion formed to have a predetermined width along the periphery of the seating portion and flattened in a direction perpendicular to a height direction of the phantom body portion.

The phantom unit for measuring an ultrasonic bone density according to an embodiment of the present invention includes a phantom body unit for supporting the phantom body unit, And may further comprise a support.

In addition, the diameter of the seat portion according to an embodiment of the present invention may be 0.75 to 0.9 times the diameter of the phantom engaging portion.

In addition, the diameter of the phantom engaging portion according to an embodiment of the present invention may be 68 mm to 72 mm, and the diameter of the seating portion may be 60.45 mm to 64.45 mm.

Also, the width of the sub-seating portion according to one embodiment of the present invention may be 3.28 mm to 4.28 mm.

In addition, one end face of the phantom support body according to one embodiment of the present invention abuts a vertical section across the center of the phantom body portion, and the length from one end to the other end of the phantom support body may be 55 mm to 65 mm .

In addition, the phantom body portion and the phantom coupling portion according to an embodiment of the present invention may be formed of a thermoplastic material including at least one of PLA (Poly Lactic Acid) and ABS (Acrylonitrile Butadiene Styrene Resin) Dimensional printing. ≪ / RTI >

The details of other embodiments are included in the detailed description and the accompanying drawings.

According to the embodiment of the present invention, a portion of the phantom body may be formed to have a concave shape so that the transducer according to the ultrasonic bone density measuring apparatus can be used universally without regard to the change in shape and position.

In addition, according to the embodiment of the present invention, a support for supporting the phantom body can be further implemented, so that the phantom body can be more firmly coupled to the transducer of the ultrasonic bone density measuring apparatus.

1A to 1C are photographs showing a conventional phantom mounted on a main ultrasonic bone density measuring apparatus.
2 is a perspective view illustrating a phantom unit for measuring an ultrasonic bone density according to an embodiment of the present invention.
3A is a front perspective view illustrating a phantom unit for measuring an ultrasonic bone density according to another embodiment of the present invention.
3B is a rear perspective view illustrating a phantom unit for measuring an ultrasonic bone density according to another embodiment of the present invention.
Fig. 4 is a plan view of Fig. 3 taken in the direction a.
Fig. 5 is a plan view of Fig. 3 taken in the direction b.
FIG. 6 is a plan view of FIG. 3 taken along the line c.
Fig. 7 is a plan view as viewed from the side of Fig. 3; Fig.
8 is a sectional view taken along line AA 'in FIG.
9A is a photograph showing a phantom unit according to an embodiment of the present invention mounted on the ultrasonic bone density measuring apparatus of FIG. 1A.
FIG. 9B is a photograph showing a phantom unit according to an embodiment of the present invention mounted on the ultrasonic bone density measuring apparatus of FIG. 1B.
FIG. 9c is a photograph showing a phantom unit according to an embodiment of the present invention mounted on the ultrasonic bone density measuring apparatus of FIG. 1c.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and / or features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, To the person having the invention, and this invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1A to 1C are photographs showing a conventional phantom mounted on a main ultrasonic bone density measuring apparatus.

That is, FIGS. 1A to 1C show different types of phantoms applied to each of three major ultrasonic bone density measuring devices.

First, the ultrasonic bone density measuring apparatus shown in FIG. 1A is a form in which the coupling of the transducer is expanded due to the water filled in the elastic membrane.

To this end, a cylindrical phantom may be applied, specifically, inserted between the transducers, and both coupling membranes may expand in the phantom and be contacted at the central membrane portion in the phantom. At this time, in order to prevent the air resistance, it is preferable to measure the bone density with the two sides of the cylinder phantom and the coupling membrane being covered twice with 70% isopropyl alcohol and medical ethanol.

Next, the ultrasonic bone density measuring apparatus shown in FIG. 1B is configured such that the coupling of the transducer is inclined by a predetermined angle.

To this end, a triangular phantom may be applied and the contact surface of the phantom may be in contact with the inclined surface of the coupling of the transducer.

Next, the ultrasonic bone density measuring apparatus shown in FIG. 1C has a shape in which a transducer is fixed and a coupling is implemented in a balloon shape.

For this purpose, a phantom having a square shape and a lower shape bent like an arc can be applied, and the phantom can be fixed to the measuring device due to the curved bottom shape.

Thus, conventionally, transducers of the ultrasonic bone density measuring apparatus have different shapes, and it is troublesome to provide different phantom for each shape.

Accordingly, the present invention proposes a phantom unit that can be used universally regardless of the different forms or positions of the transducers of the ultrasonic bone density measuring device. For reference, the transducer of the ultrasonic bone density measuring apparatus described in the present invention includes the concept of a probe as an ultrasonic probe.

2 is a perspective view illustrating a phantom unit for measuring an ultrasonic bone density according to an embodiment of the present invention.

Referring to FIG. 2, the phantom unit for measuring an ultrasonic bone density according to an embodiment of the present invention includes a phantom body portion 110 and a phantom body portion 110 provided at both ends of the phantom body portion 110, (120).

The phantom body 110 is formed in a cylindrical shape having a predetermined height, and both end portions can be inserted between the transducers of the ultrasonic bone density measuring device.

In this embodiment, the height L of the phantom body 110 is 44 mm.

The phantom coupling portion 120 may protrude from both ends of the phantom body portion 110 by a predetermined size and may be coupled to an outer portion of the transducer. That is, the phantom engaging portion 120 is provided at both ends of the phantom body portion 110 and may have a cylindrical shape like the phantom body portion 110.

The phantom engaging portion 120 may include a seating portion 122 into which the outer peripheral surface is recessed toward the inside of the phantom body portion 110.

The seating part 122 may have a diameter d2 smaller than the diameter of the phantom coupling part 120 and may have a concave shape toward the inside of the phantom body part 110. [ Thus, the phantom unit of the present invention can be stably combined with the transducer of the ultrasonic bone density measuring apparatus.

For reference, it is preferable that the recessed portion 122 is recessed so as to converge toward the center of the inner portion of the phantom body portion 110 without restricting the degree of recession,

The diameter d2 of the seating part 122 may be 0.75 to 0.95 times the diameter d1 of the phantom coupling part 120. [

Specifically, the diameter d2 of the seating portion 122 may be 60.45 mm to 64.45 mm, and the diameter d1 of the phantom coupling portion 120 may be 68 mm to 72 mm. In this embodiment, the diameter d2 of the seating part 122 is 62.45 mm and the diameter d1 of the phantom coupling part 120 is 70 mm.

The phantom engaging portion 120 may further include a sub-seating portion 124 formed along the periphery of the seating portion 122.

The sub-seating portion 124 may have a predetermined width and may have a configuration in which the seating portion 122 has a diameter d2 that is smaller than the diameter d1 of the phantom coupling portion 120. [

At this time, the sub-seating portion 124 is formed in a flat shape, and may have a flat shape in a direction perpendicular to the height direction of the phantom body portion 110. Accordingly, when the outer portion of the phantom engaging portion 120 and the outer portion of the transducer of the ultrasonic bone density measuring device are in contact with each other, each outer portion can be tightly adhered to each other by the sub-seating portion 124.

Meanwhile, the width w of the sub-seating portion 124 may be 3.28 mm to 4.28 mm, which is 3.775 mm in the present embodiment.

FIG. 3A is a front perspective view illustrating a phantom unit for measuring an ultrasonic bone density according to another embodiment of the present invention, and FIG. 3B is a view for explaining a phantom unit for measuring an ultrasonic bone density according to another embodiment of the present invention 3 is a plan view of FIG. 3 as viewed from direction a, FIG. 5 is a plan view of FIG. 3 as viewed from direction b, FIG. 6 is a plan view of FIG. 8 is a cross-sectional view taken along the line AA 'of FIG. 7. FIG.

Referring to FIGS. 3A, 3B and 6, the phantom unit for measuring an ultrasonic bone density according to another embodiment of the present invention is formed in a cylindrical shape and comprises a phantom body 110, both ends of the phantom body 110, And the phantom support unit 130 may include a phantom coupling unit 120 and a phantom support unit 130.

The phantom body portion 110 and the phantom coupling portion 120 of the phantom unit according to another embodiment of the present invention may include the phantom body portion 110 and the phantom coupling portion 120 of the phantom unit according to an embodiment of the present invention The phantom support body 130 will be described in detail in this embodiment.

The phantom support member 130 is a member for supporting the phantom body portion 110. The phantom support body 130 may be a hexahedron having a rectangular cross section. Shape.

A portion of the phantom support 130 may be coupled to penetrate the interior of the phantom body portion 110.

Specifically, the phantom support member 130 may partially penetrate the inside of the phantom joint portions 120 formed at both ends of the phantom body portion 110. [

Referring to FIG. 7, one end face of the through phantom support 130 may abut a vertical cross section of the inner center of the phantom body 110. That is, one end face of the phantom support body 130 can abut the end face in the direction perpendicular to the height direction of the phantom body portion 110 from the inner center of the phantom body portion 110.

On the other hand, the length S from one end to the other end of the phantom support body 130 may be 55 mm to 65 mm, and 60 mm in the present embodiment. In addition, the length L of the end portion of the phantom support 130 is equal to the height L of the phantom coupling portion, and is 44 mm in the present embodiment.

8, the phantom body portion 110 to which the phantom support body 130 is coupled has a shape in which the seating portion 122 of the phantom engaging portion 120 formed at both ends is recessed into the body Lt; / RTI > The detailed description of the phantom coupling unit 120 is the same as and similar to the phantom coupling unit 120 according to the embodiment of the present invention, as described above.

Thus, according to another embodiment of the present invention, the phantom support unit 130 is formed on the phantom body 110, so that the phantom unit can be more firmly coupled to the transducer of the ultrasonic bone density measuring apparatus. Particularly, when the phantom unit is mounted on a transducer slantly implemented in the transducer of the existing ultrasonic bone density measuring apparatus, the phantom coupling unit 120 can support the phantom body unit 110 so as to be effectively brought into close contact with the transverse transducer .

Meanwhile, the phantom unit according to one embodiment of the present invention and another embodiment can be manufactured through three-dimensional printing.

The phantom body 110 and the phantom coupling unit 120 according to an embodiment of the present invention and the phantom body 110 according to another embodiment of the present invention, The support 130 uses porosity of the bone tissue by using fused deposition modeling (FDM) in the three-dimensional printing technique, but adjusting the lamination interval.

At this time, in the present invention, a three-dimensional printing technique is implemented using a thermoplastic material including at least one of PLA (Poly Lactic Acid) and ABS (Acrylonitrile Butadiene Styrene Resin).

In the present invention, the phantom units are output in the same shape and the same thickness, but the stacking intervals are 100%, 96%, 92%, 88%, and 88%, respectively. %, And 84%, respectively. The default settings for output are shown in Table 1 below.

Fill (%) 100/96/92/88/84 Output temperature (℃) 200 Layer height (mm) 0.2 HeatBed temperature (℃) 60 Thickness of outer wall (mm) 0.8 Nozzle Diameter (mm) 0.4 Output speed (mm / s) 100 flow(%) 100 Bottom / Top Thickness (mm) 0.7 supporter part Retraction speed (mm / s) 30 Bed fixed type Raft Retraction length (mm) 6 First layer thickness (mm) 0.3 Overlap Fill (%) 15 Support generation angle 60 material PLA X / Y direction spacing (mm) 0.8 Material Diameter (mm) 1.75 Z-direction spacing (mm) 0.2

In addition, it can be confirmed that the phantom units of the present invention implemented using the three-dimensional printing technique based on the set values have the following SOS values according to the stacking interval, that is, the density variation. In other words, the linearity of the SOS value is realized according to the density change classified into five steps for the phantom unit. The SOS values according to the stacking intervals of the phantom units are shown in Table 2 below.

Transmitting substance Speed of sound (m / s) Proposed Phantom by filling 100% 2,147-1,723 Proposed Phantom by filling 96% 1,828-1,639 Proposed Phantom by filling 92% 1,633-1,547 Proposed Phantom by filling 88% 1,523-1,353 Proposed Phantom by filling 84% 1,484-1,285 Average range 1,370-1,887

FIG. 9A is a photograph showing a phantom unit according to an embodiment of the present invention mounted on the ultrasonic bone density measuring apparatus of FIG. 1A, FIG. 9B is a cross sectional view of the phantom unit according to the embodiment of the present invention, FIG. 9C is a photograph showing a state in which the phantom unit according to the embodiment of the present invention is mounted on the ultrasonic bone density measuring apparatus of FIG. 1C.

As shown in Figs. 9A to 9C, the phantom unit according to the embodiment of the present invention can be configured such that the phantom engaging portion having a concave shape can be brought into tight contact with the transducer of each measuring apparatus, And the phantom body portion can be stably supported by being placed on the base.

Accordingly, the phantom unit according to the embodiments of the present invention can be widely used in an ultrasonic bone density measuring apparatus having transducers having different shapes or difficult to fix the position.

It is to be understood that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described, but should be determined by the scope of the utility model claim as well as the scope of the utility model claim described below.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the above teachings. Modification is possible. Accordingly, it is to be understood that the present invention is to be determined only by the claims set forth below, and all equivalent or equivalent variations thereof fall within the scope of the present invention.

110: Phantom body part
120: Phantom coupling portion
122:
124: Sub-
130: phantom support
d1: diameter of the phantom coupling portion
d2: Diameter of the seating part
w: Width of the sub seating part
L: Height of the phantom body
S: Length from one end of the phantom support to the other end

Claims (9)

A cylindrical phantom body portion; And
A phantom engaging portion that is formed to protrude from both end portions of the phantom body portion and has an outer peripheral surface recessed toward the inside of the phantom body portion,
And a phantom unit for measuring an ultrasonic bone density.
The method according to claim 1,
Wherein the seating portion is recessed so as to converge toward an inner center of the phantom body portion.
The method according to claim 1,
The phantom-
And a sub seating member having a predetermined width along the circumference of the seating part and flattened in a direction perpendicular to a height direction of the phantom body,
Further comprising: a phantom unit for measuring an ultrasonic bone density.
The method of claim 3,
Wherein the phantom body portion includes a plurality of phantom body portions, each of the phantom body portions being formed with a plurality of phantom body portions,
Further comprising: a phantom unit for measuring an ultrasonic bone density.
5. The method of claim 4,
Wherein the diameter of the seating portion is 0.75 to 0.9 times the diameter of the phantom engaging portion.
6. The method of claim 5,
The diameter of the phantom engaging portion is 68 mm to 72 mm,
And the diameter of the seating part is 60.45 mm to 64.45 mm.
The method according to claim 6,
And the width of the sub-seating portion is 3.28 mm to 4.28 mm.
8. The method of claim 7,
Wherein one end face of the phantom support abuts a vertical cross section across the center of the phantom body portion,
Wherein the phantom support has a length from one end to the other end of from 55 mm to 65 mm.
The method according to claim 1,
The phantom body portion and the phantom coupling portion
Wherein the thermoplastic material is manufactured through three-dimensional printing in a melt lamination manner using a thermoplastic material containing at least one of PLA (Poly Lactic Acid) and ABS (Acrylonitrile Butadiene Styrene Resin).

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