JP4144846B2 - X-ray image pseudo fluoroscope - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an X-ray image pseudo-fluoroscope that can superimpose an internal hard tissue image on an appearance image of a subject.
[0002]
[Prior art]
In medical and dental practice, in order to perform treatment from the outside of the human body, the internal structure, particularly the internal hard and soft tissue structures, may be required.
[0003]
For example, temporomandibular arthroscopy is a test in which a contrast medium is injected into the joint space of the temporomandibular joint and an X-ray image of this part is used for diagnosis. It is effective for diagnosis, and treatment using a puncture needle used for injection of the contrast agent is also performed.
[0004]
At this time, the puncture needle is punctured from the surface of the patient's skin, but it is very important to puncture it accurately to reach the target joint cavity in order to perform proper contrast and treatment. is there. In addition, if the depth is too deep, there is a risk of reaching the bottom of the brain by penetrating the thinnest in the mandibular fossa, such as damage to the middle skull fossa.
[0005]
Since this joint cavity puncture has such severe conditions as described above, the surgeon is required to have abundant anatomical knowledge, experience and skill.
[0006]
In addition, this problem is also a problem that generally occurs when treatment is performed on the boundary between hard tissue and soft tissue, or the cavity between hard tissues, which cannot be seen from the outside, from the outside to the inside of the human body. Met.
[0007]
[Problems to be solved by the invention]
The present invention is intended to solve such a problem. From the outside of the human body to the inside, the cavity between the hard tissues that cannot be seen from the outside can be safely and securely treated without requiring much skill. It is an object of the present invention to provide an X-ray image pseudofluoroscope that can be applied.
[0008]
[Means for Solving the Problems]
The X-ray image pseudo-fluoroscope according to claim 1 has an X-ray contrast marker attached in a casing provided with a double image means as a fluoroscopic part so that two visible images can be optically superimposed and viewed. An X-ray image pseudo-transmission scope containing an X-ray transmission reference image of a specific part of a subject photographed
A visible image generated by the double image means so as to align the virtual image of the X-ray transmission reference image with a specific portion of the subject to be seen through that includes the same X-ray contrast marker as described above, The visible visible image of a specific part of the subject is superimposed on the fluoroscopic part and is seen through.
[0009]
Here, the superposition matching means that the virtual image of the X-ray transmission reference image is aligned and overlapped so that the appearance image of the specific part of the subject to be seen through matches.
[0010]
According to this scope, the X-ray transmission reference image of the specific part of the subject imaged by attaching the X-ray contrast marker is seen as a virtual image visible image by the double image means of the fluoroscopic part. If the image of the X-ray contrast marker appearing in the X-ray transmission image matches the image of the X-ray contrast marker attached to the specific part of the subject, the appearance of the specific part of the subject seen through from the fluoroscopic part can be seen. Since the visual image and the visible image of the X-ray transmission reference image are superimposed in the correct positional relationship, the hard tissue is exposed and looks like bone, so even if you are not an expert, hard tissue that cannot be seen from the outside It is possible to safely and reliably perform treatments such as intercavities.
[0011]
The X-ray contrast marker is composed of a metal sphere or the like that absorbs X-rays, and the number thereof is not limited. If there are at least three or more metal balls, two independent two-dimensional images can be accurately aligned. However, if the positions of the housing and the subject are fixed, one or two may be used.
[0012]
The X-ray image pseudo-fluoroscope according to claim 2 is the X-ray image pseudo-fluoroscope according to claim 1, wherein the double image means is constituted by a half mirror.
[0013]
In this scope, the double image means is specifically defined as a half mirror, and a scope that exhibits the effect of claim 1 can be easily configured. Moreover, since the half mirror is inexpensive and lightweight, the scope can be held at a low cost and with one hand.
[0014]
The X-ray image pseudo-fluoroscope according to claim 3 is the X-ray image pseudo-fluoroscope according to claim 1, wherein the double image means is constituted by a prism.
[0015]
In this scope, the double image means is specifically defined as a prism, and a scope that exhibits the effect of claim 1 can be easily configured. In addition, since the prism is inexpensive and lightweight, the scope can be held at a low cost and with one hand.
[0016]
The X-ray image pseudo-fluoroscope according to claim 4 is the X-ray image pseudo-fluoroscope according to any one of claims 1 to 3, wherein an X-ray transmission reference image of a specific part of the subject is in the housing. It is characterized by containing X-ray imaging film or X-ray imaging printing paper.
[0017]
This scope is an X-ray transmission reference image, specifically, an X-ray imaging film or X-ray imaging printing paper on which an X-ray transmission image of a specific part of a subject imaged by attaching an X-ray contrast marker is printed, The purpose of this scope can be achieved simply by selectively replacing previously photographed X-ray film and X-ray photographic printing paper according to the subject or specific part.
[0018]
The X-ray image pseudo-fluoroscope according to claim 5 is the X-ray image pseudo-fluoroscope according to any one of claims 1 to 3, wherein an X-ray transparent reference image of a specific part of the subject is in the housing. A display unit is provided, and an X-ray transmission image is displayed on the display unit.
[0019]
This scope is a display unit configured with a liquid crystal screen, a CRT screen, or the like as an X-ray transmission reference image, and the selection of the X-ray transmission reference image becomes easier.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the X-ray image pseudo-fluoroscope of the present invention will be described with reference to the attached drawings.
[0021]
FIG. 1 is an external perspective view illustrating an X-ray image pseudofluoroscope of the present invention.
[0022]
This line image pseudo fluoroscope 10 is provided with a half mirror (double image means) 1 serving as a fluoroscopic part at an upper side 2a of a casing 2 having a quadrangular cylindrical section in section, and provided on a lower inner bottom surface 2d. X-ray imaging film, X-ray transmission reference image 3 printed on X-ray imaging printing paper can be placed.
[0023]
The surgeon D looks at the half mirror (the fluoroscopic part) 1 from the front inclined at 45 degrees, thereby reaching the fluoroscopic part 1 from below to above (this light beam is indicated by a two-dot chain line). ) The virtual image (visible image) 3 'of the X-ray transmission reference image 3 placed on the inner bottom surface 2d of the cylindrical body 2 reflected by the half mirror, and reaches the fluoroscopic part 1 from the rear to the front (this light ray is It can be seen by superimposing the visible visible image OSI of the specific part OS of the subject O (this light ray is indicated by a one-dot chain line).
[0024]
The casing 2 is a cylindrical body 2 made of a light-impermeable material, and the upper side 2a is provided with a half-mirror see-through section 1 as described above, so that the cylindrical body 2 is inclined at 45 degrees. The upper part of the structure is cut out.
[0025]
A fluoroscopic window 2b for viewing the fluoroscopic part 1 is opened at a portion in front of the half mirror (fluoroscopic part) 1, and an X-ray transmission reference image 3 is taken in and out on the front side of the inner bottom surface 2d. A window 2c is opened.
[0026]
Hereafter, the case where this X-ray image pseudo fluoroscope 10 is used for joint space puncture for temporomandibular arthroscopic examination will be described.
[0027]
In this case, the appearance image OSI to be seen through with the pseudo-scope 10 is an appearance image of the specific part OS that is a part when the human head is the subject O and the right temporomandibular joint part is seen from the front. In addition, two X-ray contrast markers 4 which are made of a radio-opaque material, for example, a metal sphere, are installed.
[0028]
The X-ray contrast marker 4 is made of an X-ray opaque material or an X-ray absorbing material so that these images also appear in the X-ray transmission image of the specific part OS. In this example, the outer periphery is preferably white so that it can be easily distinguished from the human skin.
[0029]
Further, when using this pseudo fluoroscope 10, two X-ray contrast markers 4 are previously installed on a specific part OS of the same subject O, and the specific part OS is, for example, disclosed in Japanese Patent Laid-Open No. 2000-139902. X-rays are taken by the local irradiation X-ray CT apparatus shown in the Japanese Patent Publication No., and three-dimensional X-ray absorption coefficient data of the specific part (temporomandibular joint part) OS is obtained. Creates an X-ray transmission image viewed from the same direction, and further creates an X-ray transmission reference image 3 in which this X-ray transmission image is mirrored to the left and right, and is rotated up and down to be printed on X-ray film and X-ray film. Keep it.
[0030]
As described above, the X-ray transmission reference image 3 is mirrored to the left and right and rotated up and down. The virtual image of the X-ray transmission reference image 3 viewed by the fluoroscopic unit 1 configured by the half mirror of the scope 10 (possible) This is because (visual image) 3 'is reflected by the half mirror.
[0031]
The X-ray transmission reference image 3 created in this way is placed on the inner bottom surface 2 d of the scope 10. The X-ray transmission reference image 3 represents a hard tissue image of a specific part (temporomandibular joint part) OS, and a marker X-ray image 4IX of two X-ray contrast markers 4 pasted on the specific part OS, Puncture the skin with a puncture needle that is positioned with reference to the 3D image created from the 3D X-ray absorption coefficient data of the specific part (temporomandibular joint) OS created above or the XYZ three-way slice image. The image PI of the insertion point and the insertion target point (reaching point) that are the positions to be inserted is also shown in this image.
[0032]
In this state, the surgeon D holds the X-ray image pseudo-transparent scope 10 in one hand, and the fluoroscopic unit 1 makes a virtual image (image reflected on the half mirror 1) 3 ′ of the X-ray transmission reference image 3 of the specific part OS. And the external appearance image OSI of the specific part OS are viewed with the same magnification and multiple matching so as to perfectly match.
[0033]
In this case, as shown in the figure, it is necessary to keep the distance L1 from the X-ray transmission reference image 3 to the fluoroscopic part 1 and the distance L2 from the specific part OS of the subject O to the fluoroscopic part 1d constant. In particular, if the distance L1 and the distance L2 are made equal, the X-ray transmission reference image 3 can also have the same size as the actual specific part OS, and both images are overlapped for human eyes. Cheap.
[0034]
However, for example, the X-ray transmissive reference image 3 is reduced to half and the distance L1 is correspondingly reduced to half of the distance L2, that is, the distance is proportional to the size of the X-ray transmissive reference image 3. The ratio of the distance L1 to L2 may be changed.
[0035]
FIG. 2A is an explanatory diagram of an appearance image of a specific part of a subject seen through with the X-ray image pseudo-transmission scope of FIG. 1, and FIG. 2B is a diagram showing an X-ray transmission reference image (visible image). (c) is a figure which shows the virtual image of a X-ray transparent reference image, (d) is a figure which shows the state which overlap-aligned the to-be-photographed object's external appearance image and the virtual image of a X-ray transparent reference image. Accordingly, the same parts as those already described are denoted by the same reference numerals, and redundant description is omitted.
[0036]
FIG. 2A shows an external appearance image OSI of the specific part O that can be seen in the fluoroscopic part 1 of the X-ray image pseudo-transparent scope 10, and two external appearance images 4IO of the X-ray contrast marker 4 are also visible. ing. Of the X-ray contrast markers 4, the one visible on the upper right in the figure is an expected insertion point of the puncture needle determined by anatomically judging from the appearance.
[0037]
FIG. 2 (b) shows the X-ray transmission reference image 3, and it is understood that the X-ray transmission reference image 3 is rotated up and down with a left-right mirror image with respect to the appearance image OSI. In this image, the marker X-ray image 4IX of the two X-ray contrast markers 4, the image PI1 of the insertion point of the puncture needle and the image PI2 of the insertion target point are seen in a state where they are rotated up and down as left and right mirror images. Yes.
[0038]
Further, the maxilla (upper) and mandible (lower), which are hard tissues, can be seen more clearly, but the cheek surface, etc., which is a soft tissue, is blurred as shown by dotted lines.
[0039]
FIG. 2C is a virtual image 3 ′ of the X-ray transmission reference image 3 of the specific part O that can be seen in the fluoroscopic part 1, is reflected by the half mirror 1, and can be superimposed on the normal state, that is, the appearance image OSI. It is visible in the state. Further, each point visible in the virtual image 3 ′ is also shown as a marker X-ray virtual image 4IX ′ which is a virtual image, a virtual image PI1 ′ at the insertion point, and a virtual image PI2 ′ at the insertion target point.
[0040]
2D, the position of the X-ray image pseudo fluoroscope 10 is adjusted, and the fluoroscopic unit 1 is overlapped with the appearance image OSI of the specific part OS of the subject O and the virtual image 3 ′ of the X-ray transmission reference image 3. It is in a consistent state.
[0041]
In order to perform this double matching, the images of each other are matched. At this time, if the marker appearance image 4IO and the marker X-ray virtual image 4IX ′ of the two X-ray contrast markers 4 are matched, Since the image is also a clear image, alignment is easy.
[0042]
Although an example using two X-ray contrast markers 4 has been described here, the distance between the specific part OS of the subject O and the scope 10 or the scope 10 can be specified by installing the scope 10 on an appropriate support device. If the direction of viewing the part OS can be set properly, the number of markers 4 may be one. Of course, there may be three or more.
[0043]
When this double-matched image is seen, it can be seen that the appearance image OSI of FIG. 2A is seen through so that the internal tissue of the portion can be seen through.
[0044]
The surgeon D has the pseudo fluoroscope 10 in one hand (in this case, the left hand), and the insertion point image PI1 of the puncture needle shown in the virtual image 3 'of the X-ray transmission reference image 3 of the fluoroscopic part 1 and the insertion target. While observing the point image PI2, the puncture needle held in the other hand is positioned in the direction determined as the puncture point for puncture of the temporomandibular joint space of the subject O without requiring much skill. Initial puncture can be performed.
[0045]
FIG. 3 is an external perspective view illustrating the X-ray image pseudofluoroscope of the present invention.
[0046]
This X-ray image pseudo fluoroscope 10A differs from the pseudo fluoroscope 10 of FIG. 1 in that the double image means 1A configured as the fluoroscopic portion 1A is not a half mirror but a prism as shown in the figure. ing. In this figure, rays passing through the prism 1A are indicated by dotted lines.
[0047]
Even if such a prism 1A is used as the see-through portion 1A, similarly to the half mirror, the virtual image 3 ′ of the X-ray transmission reference image 3 of the specific part OS and the external appearance image OSI of the specific part OS are set at the same magnification so as to match exactly. Since it can be seen in a superposed manner, the appearance image requires a little skill, such as a cavity between hard tissues that is seen through so that the internal tissue of the part can be seen through, but cannot be seen from the outside. Treatment can be performed safely and reliably.
[0048]
Further, since the scope is composed only of the prism 1A, the housing 2, and the X-ray transmission reference image 3, it can be constructed at low cost and light weight and can be operated by the operator with one hand.
[0049]
FIG. 4 is an external perspective view illustrating the X-ray image pseudofluoroscope of the present invention.
[0050]
This X-ray image pseudo fluoroscope 10B is composed of a liquid crystal screen or the like, rather than the image 3 in which the X-ray transmission reference image 3A is printed on an X-ray imaging film, as compared with the pseudo fluoroscope 10 of FIG. The difference is that the stored image data is displayed on the display unit 3A for displaying the image data.
[0051]
When the X-ray transparent reference image 3A is displayed on such a display unit 3A, the selection of the X-ray transparent reference image becomes easier.
[0052]
Hereafter, the procedure of the X-ray contrast examination using the X-ray image pseudo-fluoroscope of this invention is demonstrated. This procedure was performed by the present inventor, and details other than those relating to this scope are described in detail in the journal “Dental Radiation” 2000 No. 2 Volume 40 (Japan Dental Radiological Society 2000 Vol. 40). No. 2 / ISSN 0389-9705), refer to “Joint arthrography using small dental X-ray CT (Ortho-CT)”.
[0053]
<Procedure 1 and 2>
When performing an X-ray contrast examination using the X-ray image pseudo-fluoroscope 10, first, as described above, the local irradiation X-ray CT imaging apparatus in a state where the X-ray contrast marker 4 is installed in the specific part OS of the subject O. Then, X-ray imaging is performed, and an XYZ three-directional slice image of the specific part (temporomandibular joint part) OS is created.
[0054]
FIG. 5A is an external perspective view of a main part showing a state in which a subject is being imaged by the local irradiation X-ray CT imaging apparatus, and FIG. 5B is a front view of a display operation unit included in the local irradiation X-ray CT imaging apparatus. The figure is shown.
[0055]
The X-ray CT imaging apparatus 20 shown in FIG. 5A hangs down with an X-ray generator 1 and an X-ray detector 2 opposed to an arm 10a extended from an upper part of a frame 10 constituting the entire structure of the apparatus. The swivel arm 3 is supported so as to be capable of swiveling.
[0056]
The patient sits on a chair not visible in the figure, and the head O, which is the subject, is fixed by the head band 4ab of the head fixing device (not shown) provided on the back of the chair, and is dropped on the swivel arm 3. The X-ray generator 1 and the X-ray detector 2 are sandwiched.
[0057]
Left and right guide beam generating means 6b for irradiating the left and right guide beams LX is installed on the support 6a extending to the arm 10a, and the front and rear guide beams LY are respectively applied to the X-ray generator 1 and the two-dimensional X-ray image sensor 2. A pair of front and rear guide beam generating means 6c for irradiating and an upper and lower guide beam generating means 6d for irradiating the upper and lower guide beams LZ are provided.
[0058]
The chair on which the patient is placed can move horizontally. As shown in the drawing, the front and rear guide beams LY irradiated by the front and rear guide beam generating means 6c and the upper and lower guide beams LZ irradiated by the upper and lower guide beam generating means 6d are provided. The position can be just positioned near the X-ray contrast marker 4 attached to the subject O, and the position where the left and right guide beams LX irradiated by the left and right guide beam generating means 6b are viewed from the front becomes the temporomandibular joint portion. It can be.
[0059]
In this state, the swivel arm 3 is swung and X-rays are swirled locally on the temporomandibular joint.
[0060]
The device 20 is configured with a personal computer as shown in FIG. 5B, and is provided with display operation means 12 including a display unit 12a, a control processing unit 12b, a mouse 12c, a keyboard 12d, and the like. Various images such as a slice image created by the device 20 can be displayed, and various operations can be performed using the displayed images. 6 to 9 described below are also displayed on the display unit 12a.
[0061]
6 (a) to 6 (f) are slice images created in this way, and (a), (b) and (c) are for determining the insertion point (open star). Frontal cut (slice image of the temporomandibular joint viewed from the front in the Y direction), sagittal cut (slice image of the temporomandibular joint viewed from the left and the left hand in the X direction), horizontal cut (temporomandibular joint part) Is a slice image viewed from above in the Z direction.
[0062]
(D), (e), and (f) are for determining the insertion target point (open star), and are forehead, sagittal, and horizontal cuts, respectively.
[0063]
In addition, in the drawings of (a) to (f), the white circle pointed by the white arrow is an image of the X-ray contrast marker serving as the predicted insertion point described in FIG.
[0064]
Here, in the local irradiation X-ray CT imaging method used, the irradiation field has a height of 29 mm and a width of 38 mm at the center of rotation, the exposure dose is small, and the time for creating a three-way slice image is also 7 minutes. Degree. In addition, the obtained slice images are 90 images each in three directions of XYZ at intervals of 0.1 mm, and these slice images are sequentially displayed, as shown here, respectively. In order to determine the target point, an optimum slice image can be displayed, and these points can be determined accurately and accurately.
[0065]
At this time, if a three-dimensional image of the temporomandibular joint as shown in FIG. 7 is used, the puncture position can be easily determined. According to the local irradiation X-ray CT imaging apparatus, such a three-dimensional image can be easily reconstructed by using the three-dimensional X-ray absorption coefficient data once obtained.
[0066]
<Procedure 3>
When the insertion point and the insertion target point are determined in this way, an X-ray transmission reference image 3 in which these are combined and displayed is created and set in the X-ray image pseudo-transparent scope 10, and the appearance image and the hard image of the temporomandibular joint portion are set. While observing the fluoroscopic image with the tissue image, the position of the insertion point and the direction of the puncture needle are determined, and the puncture needle is initially punctured to a certain depth. This detail has already been described with reference to FIGS.
[0067]
<Procedure 4>
Next, the X-ray image pseudo fluoroscope 10 is removed, and the puncture needle is inserted while viewing the fluoroscopic image including the puncture needle of the temporomandibular joint portion with the same local irradiation X-ray CT imaging apparatus with the puncture needle initially punctured. A target point is reached and a contrast medium is injected.
[0068]
8A is a fluoroscopic image in the initial puncture state, FIG. 8B is a fluoroscopic image in which the puncture needle reaches the target insertion point and injects the contrast agent, and FIG. 8C is the state in which the injection of the contrast agent is completed. It is a fluoroscopic image. In this figure, the symbol NI is the puncture needle described in FIG. 2D, and the symbol NIt is a tube connected to the rear end of the puncture needle NI to inject a contrast agent.
[0069]
In FIGS. 8B and 8C, it can be seen that when the contrast medium is injected into the joint cavity, the joint cavity portion is projected darker and the shape clearly appears.
[0070]
Thus, not only CT imaging but also fluoroscopic imaging can be performed with the same image, so that treatment can be performed without moving the patient.
[0071]
<Procedure 5>
Thus, immediately after injecting the contrast agent, X-ray CT imaging of the temporomandibular joint is performed with the same apparatus.
[0072]
FIGS. 9A to 9C are three-direction slice images of the temporomandibular joint portion obtained in this way, and FIG. 9A is a frontal severance (slice image of the temporomandibular joint portion seen from the front in the Y direction), (B) Sagittal cut (slice image of temporomandibular joint portion seen from left, left hand of X direction), (c) Horizontal cut (slice image of temporomandibular joint portion seen from upper side, upper hand of Z direction) is there.
[0073]
When these images are compared with the MRI image, in addition to obtaining the same examination result, in FIGS. 9 (a) and 9 (b), the articular disk that is not obvious in the MRI image appears clearly. More suitable for medical treatment.
[0074]
Moreover, all procedures can be performed in about 15 minutes with the subject patient set on the local irradiation X-ray CT imaging apparatus, which is a short time, and the conventional X-ray imaging apparatus and MRI apparatus can be shortened. No need to go back and forth between. Furthermore, the amount of X-ray exposure has been greatly reduced. In addition, the direction of the puncture needle and the positioning of the insertion point can be safely and reliably performed by the X-ray image pseudo-fluoroscope 10 even if it is not an expert.
[0075]
Here, the case where the X-ray image pseudo fluoroscope 10 is used for joint puncture of temporomandibular arteriography has been described. However, the X-ray image pseudo fluoroscope of the present invention allows the internal hard tissue to be seen through. This is effective when a treatment is applied to the boundary between the hard tissue and the soft tissue and the cavity between the hard tissues, which cannot be seen from the outside, from the outside to the inside of the human body.
[0076]
In addition, here, as an example of the double image means of the X-ray image pseudo-perspective scope, an example using a half mirror and a prism is illustrated, but the present invention is not limited thereto. As a method of superimposing the two images, a glasses type proposed as a display means of a computer may be used, and a normal external image can also be seen.
[0077]
【The invention's effect】
According to the X-ray image pseudo-fluoroscope of claim 1, an X-ray transmission reference image of a specific part of a subject photographed by attaching an X-ray contrast marker by the double image means of the fluoroscopic unit If the image of the X-ray contrast marker that appears in the X-ray transmission image matches the image of the X-ray contrast marker attached to a specific part of the subject, the subject that is seen through from the fluoroscopic part The X-ray transmission reference image is closely aligned with the correct positional relationship, and the hard tissue is exposed and looks like a bone. Even if it is not an expert, the cavity between the hard tissues that cannot be seen from the outside It is possible to safely and reliably perform treatments.
[0078]
According to the X-ray image pseudo fluoroscope according to claim 2, in addition to the effect of claim 1, the dual image means is specifically defined as a half mirror, and the scope that exhibits the effect of claim 1 is provided. It can be easily configured. Moreover, since the half mirror is inexpensive and lightweight, the scope can be held at a low cost and with one hand.
[0079]
According to the X-ray image pseudo fluoroscope according to claim 3, in addition to the effect of claim 1, the dual image means is specifically defined as a prism, and a scope that exhibits the effect of claim 1 can be easily obtained. Can be configured. In addition, since the prism is inexpensive and lightweight, the scope can be held at a low cost and with one hand.
[0080]
According to the X-ray image pseudo-fluoroscope according to claim 4, in addition to the effect of any one of claims 1 to 3, an X-ray transmission reference image of a subject photographed specifically with an X-ray contrast marker attached. Since X-ray film or X-ray photographic paper is printed with X-ray transmission image of specific part, select X-ray film and X-ray photographic paper that have been taken in advance according to the subject and specific part. The purpose of this scope can be achieved by simply replacing it.
[0081]
According to the X-ray image pseudo fluoroscope according to claim 5, in addition to the effect of any one of claims 1 to 3, the X-ray transmission reference image is a display unit configured by a liquid crystal screen, a CRT screen, or the like. Therefore, selection of an X-ray transmissive reference image becomes easier.
[Brief description of the drawings]
FIG. 1 is an external perspective view illustrating an X-ray image pseudofluoroscope of the present invention.
2A is an explanatory diagram of an appearance image of a specific part of a subject to be seen through with the X-ray image pseudo-transparent scope of FIG. 1, and FIG. 2B is a view showing an X-ray transmission reference image (visible image); (c) is a diagram showing a virtual image of an X-ray transmission reference image, and (d) is a diagram showing a state in which the appearance image of the subject and the virtual image of the X-ray transmission reference image are overlaid.
FIG. 3 is an external perspective view illustrating an X-ray image pseudo-fluoroscope according to the present invention.
FIG. 4 is an external perspective view illustrating an X-ray image pseudofluoroscope of the present invention.
5A is a perspective view of an external appearance of a main part showing a state in which a subject is imaged by a locally irradiated X-ray CT imaging apparatus suitably used in combination with the X-ray image pseudo-fluoroscope of the present invention; FIG. Front view of display operation means provided in this local irradiation X-ray CT imaging apparatus
FIGS. 6A to 6F are explanatory diagrams of a procedure 1 (creating an X-ray transmission reference image) of an X-ray contrast examination using the X-ray image pseudo-fluoroscope of the present invention.
FIG. 7 is an explanatory diagram of a procedure 2 (determination of a puncture position based on a three-dimensional image) of an X-ray contrast examination using the X-ray image pseudofluoroscope of the present invention
FIGS. 8A to 8C are explanatory diagrams of a procedure 4 (monitoring of contrast medium injection) of an X-ray contrast examination using the X-ray image pseudofluoroscope of the present invention. FIGS.
FIGS. 9A to 9C are explanatory diagrams of a procedure 5 (examination based on the obtained contrast image) of the X-ray contrast inspection using the X-ray image pseudo-fluoroscope of the present invention.
[Explanation of symbols]
1 Half mirror (transparent part, double image means)
1A prism (perspective part, double image means)
2 Case
3 X-ray transmission reference image (X-ray film, X-ray photographic paper)
3A X-ray transmission reference image (display unit)
3 'virtual image
4 X-ray contrast markers
10 X-ray image pseudo fluoroscope
O Subject
OS specific part
OSI appearance image

Claims (5)

An X-ray transmission reference image of a specific part of a subject photographed by attaching an X-ray contrast marker in a casing provided with a double image means as a see-through unit so that two visible images can be optically superimposed. An X-ray image pseudo-fluoroscope that is housed,
A visible image generated by the double image means so as to align the virtual image of the X-ray transmission reference image with a specific portion of the subject to be seen through that includes the same X-ray contrast marker as described above, An X-ray image pseudo-transmission scope characterized in that an external appearance visible image of a specific part of the subject is superposed and seen through by the see-through unit. The X-ray image pseudo-fluoroscope according to claim 1,
An X-ray image pseudo-transmission scope characterized in that the double image means comprises a half mirror. The X-ray image pseudo-fluoroscope according to claim 1,
An X-ray image pseudo-transparent scope characterized in that the double image means is constituted by a prism. The X-ray image pseudo-fluoroscope according to any one of claims 1 to 3,
The X-ray image pseudo-transmission scope, wherein the X-ray transmission reference image of the specific part of the subject is an X-ray imaging film or X-ray imaging printing paper housed in the casing. The X-ray image pseudo-fluoroscope according to any one of claims 1 to 3,
The X-ray image pseudo-transmission scope, wherein the X-ray transmission reference image of the specific part of the subject is provided with a display unit in the housing and displays the X-ray transmission image there.

Images