JPH0889502A - Fluororadiographic equipment - Google Patents

Abstract

PURPOSE: To provide fluororadiographic equipment with which the more exacter display image of an object can be prepared based on the electromagnetic wave images of various wavelengths. CONSTITUTION: When a reagent 6 to which fluororadiography is performed is placed on a sample table 7 and the placed reagent 6 is irradiated with X rays by an X-ray irradiator 3, the radiographs of various wavelengths from the reagent 6 are respectively converted into optical images by an optical converting part 9. Next, an optical processing part 10 performs optical processing to the optical images converted by the optical converting part 9, and the optically processed optical images corresponding to the radiographs of various wavelengths are detected at the same coordinate position by a CCD camera 14. Based on the detecting signal of the CCD camera 14, arithmetic processing including superposition arithmetic is performed by a computer 16 and based on the arithmetically processed detecting signal of the CCD camera 14, the radiographs of the reagent 6 are displayed on a display 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluoroscopic image pickup apparatus for picking up an electromagnetic wave image of a subject.

[0002]

2. Description of the Related Art By using a radioisotope (RI) as a tracer, for example, the state of a specific site in a living body is displayed, and based on the displayed image, data necessary for analysis of the function of the living body and treatment are displayed. Is being done. For example, it is known that if a technetium compound is administered to a fractured body, the technetium compound will accumulate in the fractured part. Utilizing this, in order to confirm the degree of progress of treatment of fractures and to establish a rehabilitation policy, a technetium compound was administered, and a γ-ray image from the administered technetium was used by using an image intensifier or the like. BACKGROUND ART It is performed to convert a light image into an image and display a predetermined region.

[0003]

However, in the radiography of a predetermined site by this type of radiographic image, the radiographic image of the predetermined site is clearly captured, but the coordinate position of the predetermined site with respect to the entire subject is displayed on the display image. It is not clear from the above, and there is a drawback that the position cannot be specified. This becomes a problem especially when a small subject such as a rat is used.

The present invention has been made in view of the present situation of the fluoroscopic imaging of a subject as described above, and an object thereof is to produce a more accurate display image of a subject based on electromagnetic wave images of different wavelengths. Another object is to provide a transparent imaging apparatus.

[0005]

In order to achieve the above object, the invention according to claim 1 is a sample table on which the subject to be imaged by electromagnetic waves is placed, and a sample table placed on the sample table. An electromagnetic wave irradiating unit that irradiates an electromagnetic wave to the subject, a wavelength converting unit that converts electromagnetic wave images of different wavelengths from the subject into respective optical images, and an optical image converted by the wavelength converting unit. On the other hand, an optical processing means for performing optical processing and an optical image corresponding to the electromagnetic wave image of different wavelength optically processed by the optical processing means,
Based on an optical sensor that detects at the same coordinate position, an arithmetic processing unit that performs arithmetic processing including a superposition arithmetic operation based on a detection signal of the optical sensor, and a detection signal of the optical sensor that is arithmetically processed by the arithmetic processing unit. And display means for displaying an electromagnetic wave image of the subject.

In order to achieve the above object, the invention of claim 2 is characterized in that, in the invention of claim 1, the electromagnetic wave irradiating means is capable of selectively irradiating electromagnetic waves of a plurality of wavelengths. To do.

In order to achieve the above object, the invention according to claim 3 is characterized in that, in the invention according to claim 1, the electromagnetic wave irradiating means is an X-ray irradiator for irradiating X-rays. Is.

In order to achieve the above-mentioned object, the invention according to claim 4 is the invention according to claim 1, wherein a plurality of the optical sensors are arranged on a plane perpendicular to the optical axis of the optical image. It is characterized by being.

[0009]

According to the invention described in claim 1, when the subject to be fluoroscopically photographed is placed on the sample table and the subject placed on the sample table is irradiated with electromagnetic waves by the electromagnetic wave irradiation means, The conversion means converts the electromagnetic wave images of different wavelengths from the subject into optical images, respectively. Then, for the optical image converted by the wavelength conversion means,
Optical processing is performed by the optical processing means, and optical images corresponding to the electromagnetic wave images of different wavelengths subjected to the optical processing are detected by the optical sensor at the same coordinate position. Then, based on the detection signal of the optical sensor, arithmetic processing including arithmetic processing is performed by the arithmetic processing means, and the electromagnetic wave image of the subject is displayed by the display means based on the arithmetically processed detection signal of the optical sensor. To be done.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the electromagnetic wave irradiating means selects the electromagnetic waves of a plurality of wavelengths and irradiates the subject, if necessary.

According to the third aspect of the invention, the effect of the first aspect of the invention can be obtained by using electromagnetic waves as X-rays.

According to a fourth aspect of the present invention, in addition to the operation of the first aspect of the present invention, the plurality of optical sensors arranged on a plane perpendicular to the optical axis of the optical image of the subject allows the subject to be photographed. An electromagnetic wave image of a wide area can be obtained.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. FIG. 1 is an explanatory diagram showing the configuration of this embodiment.

In this embodiment, the electromagnetic wave irradiation means is 10 to 10.
This is the case of an X-ray irradiator that emits X-rays having an intensity of 0 KV and 0 to 5 mA. As shown in FIG.
An X-ray irradiator 3 is disposed so as to face the upper surface of the X-ray irradiator, and a diaphragm 4 is fixed to the front surface of the X-ray irradiator 3. An irradiation chamber 5 is provided in an upper portion of the housing 1 facing the X-ray irradiator 3, a sample table 7 is provided in the irradiation chamber 5, and a subject 6 is placed on the sample table 7. Has been done. Case 1
In the inside, below the sample table 7, there is provided a light conversion unit 9 to which a plurality of light conversion films 8n for converting radiation images of the subject 6 having different wavelengths into optical images are exchangeably mounted. . In this light conversion section 9, the light conversion film 8n
A shutter 19 is attached to the front surface of the.

In the housing 1, below the light conversion portion 9, a diaphragm 11 for narrowing the light beam of the optical image of the subject 6 from the light conversion film 8n and an optical image of the light beam in a predetermined frequency region are obtained. An optical processing unit 10 including a filter 12 is provided.
Further, in the housing 1, below the light conversion unit 9, an image pickup unit 13 including a vertically-guided guide rail 15 and a CCD camera 14 whose position can be adjusted along the guide rail 15 is provided. It is provided. And the CCD camera 14
A computer 1 for performing various calculations including superposition calculation on the output terminal of the CCD camera 14 based on the detection signal of the CCD camera 14.
6 is connected, and the computer 16 is connected to the computer 1
A display 17 for displaying a radiation image of the subject 6 obtained based on the calculation processing in 6 is connected.

In the operation of this embodiment, a rat is used as a subject,
A case where the position of a specific portion is confirmed by using the radioisotope (R1) as a trace will be described with reference to FIG. FIG. 2 is an explanatory diagram showing a radiation image of a rat according to this embodiment.

This radiographic image is taken in order to observe the healing process of the bone fracture by utilizing the accumulation of the technetium compound in the bone fracture portion in the process of treating the bone fracture. A rat, which is the subject 6, is caused to have a bone fracture in advance, and RI is then injected into the rat so that it is easy to concentrate on the technetium derivative. After waiting for the RI to reach the fracture site, the rat is injected with an anesthetic. Then, the anesthetized rat is placed on the sample table 7. First, in the light conversion unit 9, the light conversion film 8a having high sensitivity to X-rays.
And set the CCD camera 14 in the image pickup unit 13.
Is fixedly moved along the guide rail 15 to a position where a predetermined magnification is obtained, and in the optical processing unit 10, the diaphragm 11
Is set to a predetermined value and a desired filter 12 is set. In this state, the shutter 19 is set to open and the X-ray irradiator 3 is operated to irradiate the subject 6 with X-rays for a predetermined period of time to capture an X-ray image of the subject 6.

By this X-ray irradiation, an X-ray image of the rat is formed on the light conversion film 8a, and the X-ray image is converted into an optical image on the light conversion film 8a. The rat thus obtained. The optical image of (1) is applied to the diaphragm 11 by the optical processing unit 10 and passes through the filter 12 to obtain an optical image of a rat in a predetermined frequency region under a predetermined diaphragm condition. The optical image of the rat is formed on the image receiving surface of the CCD camera 14, and the image of the rat is taken by the CCD camera 14.
The obtained image reception signal is input to the computer 16. When the rat image receiving signal is input to the computer 16, the image receiving signal is stored in the memory of the computer 16 in association with the address signal. In order to confirm the image receiving signal of the rat, when the image receiving signal is read out from the memory and displayed on the display unit 17, the whole transmission image 20 of the rat is displayed as shown in FIG. 2 (b).

Then, in order to take a γ-ray image of the fractured site by the γ-rays of RI concentrated on the technetium derivative of the fractured site of the rat, the shutter 19 is set to the closed state in the light conversion section 9. , Γ rays are set to the high-sensitivity light conversion film 8b. Here, when the shutter 19 is set for a predetermined time, the R accumulated in the fracture site of the rat is accumulated.
The γ-ray image of the fractured part due to the γ-ray of I-ra is the light conversion film 8b.
Then, the γ-ray image is converted into a light image of the fracture site by the light conversion film 8b. The optical image passes through the optical processing unit 10 and is incident on the CCD camera 14, and the CCD camera 14
An image of the fractured part of the rat is picked up by, and the obtained image receiving signal is input to the computer 16. When the image receiving signal of the fractured portion of the rat is input to the computer 16, the image receiving signal is stored in the memory of the computer 16 in association with the address signal. In order to confirm the image receiving signal of the fractured portion of the rat, when the image receiving signal is read out from the memory and displayed on the display unit 17, a transmission image 21 of the fractured portion of the rat is displayed as shown in FIG. 2 (c). It

In this embodiment, after the imaging of the whole rat as described above and the imaging of the fracture site of the rat are performed,
When the superposition calculation command is input to the computer 16, the superposition calculation process of the whole transmission image 20 of the rat and the transmission image 21 of the fracture site of the rat is executed by the computer 13.
When this calculation result is displayed on the display unit 17, as shown in FIG. 2A, a radiation image 22 is displayed in which the transmission image 21 of the fractured site of the rat is superimposed on the overall transmission image 20 of the rat.

According to this radiation image 22, which coordinate position of the transmission image 21 of the fractured part of the rat is on the whole transmission image 20 of the rat is accurately displayed with high resolution. It is possible to accurately grasp the degree of healing of the fracture site, determine future treatment methods for each, and perform each treatment on each site.

In this embodiment, the case where the radiation image by the tracer is superimposed on the whole X-ray image of the subject has been described.
The invention is not limited to this example. For example, by superimposing an infrared image obtained by infrared thermography on the entire X-ray image of the subject, the distribution of the surface temperature of the subject is displayed with the coordinate position clearly defined in the entire image of the subject. Is also possible. Further, the electromagnetic wave irradiation means is made capable of generating X-rays and ultrasonic waves, and an X-ray image of the subject is
It is also possible to obtain an ultrasonic transmission image of Pohlman and, based on these, display only the part that is clearly displayed by the ultrasonic transmission method in the entire X-ray image of the subject as an ultrasonic transmission image. Is. Further, the arithmetic processing means of the present invention not only calculates a superimposed image of a plurality of images or a subtracted image between two images, but also performs processing such as gradation control processing and image sharpness processing by spatial frequency processing. It is possible. Then, on the surface perpendicular to the optical axis of the optical image of the subject, C
It is also possible to arrange a plurality of CD cameras so as to obtain an electromagnetic wave image of a wide area portion of a subject.

[0023]

According to the first aspect of the invention, the subject placed on the sample table is irradiated with electromagnetic waves, and electromagnetic wave images of different wavelengths from the subject are converted into optical images and converted. The optical image is subjected to optical processing, and the optical image corresponding to the electromagnetic wave images of different wavelengths subjected to the optical processing is
The calculation processing including the superposition calculation is performed on the basis of the detection signal obtained at the same coordinate position, and the electromagnetic wave image of the subject is displayed based on the detection signal of the photosensor thus processed. Electromagnetic wave images of different wavelengths of the specimen are displayed by superimposing them on the same coordinate plane with good contrast.
It becomes possible to accurately position the tracer radiation image of the predetermined region of the subject with high resolution in the entire transmission image of the subject. According to the invention of claim 2, in addition to the effect of the invention of claim 1, by selecting an appropriate wavelength, a plurality of electromagnetic wave images of the subject are superimposed on the same coordinate plane with good contrast and high resolution. And display the electromagnetic wave image of a specific part of the subject,
It becomes possible to grasp with high accuracy. According to the invention of claim 3, the effect obtained by the invention of claim 1 is realized by using electromagnetic waves as X-rays. According to the invention of claim 4, in addition to the effect obtained by the invention of claim 1, a plurality of optical sensors are arranged on a plane perpendicular to the optical axis of the optical image of the subject. It is possible to obtain an electromagnetic wave image of a wide area portion of the subject.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is an explanatory view showing a radiation image of a rat according to the same embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 3 X-ray irradiator 6 Subject 7 Sample table 8a-8n Light conversion film 14 CCD camera 16 Computer 17 Display

Claims (4)

[Claims] 1. A sample table on which a subject to be imaged by electromagnetic waves is placed, an electromagnetic wave irradiating means for irradiating the subject placed on the sample table with electromagnetic waves, and a different one from the subject. Wavelength conversion means for converting an electromagnetic wave image of a wavelength into each optical image, optical processing means for performing optical processing on the optical image converted by the wavelength conversion means, and optical processing by the optical processing means. And an optical sensor for detecting optical images corresponding to electromagnetic wave images of different wavelengths at the same coordinate position, an arithmetic processing means for performing arithmetic processing including a superposition arithmetic operation based on a detection signal of the optical sensor, and the arithmetic processing means. And a display unit that displays an electromagnetic wave image of the subject based on the detection signal of the optical sensor that has been arithmetically processed by the fluoroscopic imaging device. 2. The fluoroscopic imaging apparatus according to claim 1, wherein the electromagnetic wave irradiating means is capable of selectively irradiating electromagnetic waves having a plurality of wavelengths. 3. The fluoroscopic imaging apparatus according to claim 1, wherein the electromagnetic wave irradiation means is an X-ray irradiator that irradiates X-rays. 4. The fluoroscopic imaging apparatus according to claim 1, wherein a plurality of the optical sensors are arranged on a surface perpendicular to the optical axis of the optical image.