JPH01140139A - X-ray indirect photographing device - Google Patents

Abstract

PURPOSE:To smoothly digitize an inspection image by imprinting an inspection image of an object into roll film and magnetically recording graphic information on photographed frames on the magnetically coating part of the film in digital amount. CONSTITUTION:First, digital graphic identification information on the object 5 is inputted from a graphic identification information input part 18. The information is filed in a graphic identification information storage circuit 19 in order. When a photographing signal S1 is issued from a control signal generating circuit 12, X-rays 13 from an X-ray tube 7 are projected on the object 15, and its transparent X-ray image is transformed into an optical image by an X-ray detector 8, led to a photographing camera 10 and imprinted to the roll film 14. When the film 14 is fed frame by frame, the circuit 12 generates an image start recording signal S3, and an image start signal generator 20 generates an image start signal ST indicating an image position. The signal ST is recorded in the magnetically coating part of the film 14 by means of a magnetically recording part 17. Graphic identification information ID from the graphic identification information storage circuit 19 is record on the film 14.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention emits X-rays to a subject and transfers the inspection image onto a roll film that has a magnetic coating applied to a predetermined area other than the image area of each photographed frame. The present invention relates to an X-ray indirect photography device for imprinting, and more particularly to an X-ray indirect photography device that can magnetically record image information in digital quantities on the roll film when photographing an examination image of a subject.

[Conventional technology]

Recently, we have digitized test images imprinted on roll film taken during mass examinations for chest and digestive organs, etc.
Attempts have been made to display the information on a CRT monitor and use it for diagnosis. In this case, the test image imprinted on the roll film must be digitized by a film digitizer, and image identification information such as the patient's name, patient number, date of birth, and gender must also be digitized.

However, as shown in FIG.
The test image 2 of the object to be examined is imprinted on the image 2, and the image number 3 corresponding to each object is imprinted in the vicinity of the examination image 2. Furthermore, Fig. 5 shows three types of recording formats for the roll film 1, and Fig. 5 (,) shows the case of photographing the chest etc. using a mirror camera; is the transmission of the object
This shows the case of photographing using an image intensifier that converts a line image into an optical image.

[Problem that the invention seeks to solve]

In order to digitize the roll film 1 photographed with such a conventional xi indirect photography device, the inspection image 2
At the same time, image number 3 of the subject must be converted into digital information by pattern recognition, etc. Furthermore, image number 3 alone is insufficient as image identification information for the subject. Therefore, all digital image identification information for the subject must be obtained by using the image number 3 data as an index and matching it with image identification information such as name, patient number, date of birth, and gender. Therefore, obtaining digital image identification information, especially for a subject, becomes complicated and cumbersome.

In addition, the interval between each photographed frame of the inspection image 2 on the roll film 1 is not necessarily constant due to variations in the amount of movement that occurs during shooting, and even if one image is digitized, even if it is sent at an accurate feed pitch, the inspection image 2 The position of the photographed frame and the position of digitization will be shifted. On the other hand, a method may also be considered in which the edge of the inspection image 2 imprinted on each frame is detected and the starting position of digitization for that image is determined. However, in this case, the density of the inspection image 2 of each photographed frame imprinted on the roll film 1 is not constant, and one image may be so thin that its edges cannot be detected. Therefore, it is not possible to smoothly digitize the inspection image 2 of each photographed frame on the roll film 1 using the film digitizer.

In this way, when digitizing the roll film 1 taken with a conventional X-ray indirect radiography device, it is difficult to digitize the examination image 2 smoothly, and it is difficult to obtain digital image identification information about the subject. This was complicated, complicated, and troublesome.

Therefore, an object of the present invention is to provide an X-ray indirect imaging apparatus that can solve these problems.

[Means for solving problems]

The means of the present invention for solving the above problems is to
The transmitted X-ray image transmitted through the subject is converted into an optical image, and the inspection image of the subject is transferred to a roll film with a magnetic coating applied to a predetermined area other than the image area of each photographed frame using a camera. In the indirect X-ray imaging apparatus, a magnetic recording part having a head for magnetically recording digital information on a magnetic coating part of a roll film loaded in the photographing camera, and a digital image identification of the subject. an image identification information input section for inputting information; an image identification information storage circuit for storing the image identification information from the image identification information input section and sending it to the magnetic recording section;
An image information recording device consisting of an image start signal generator that sends an image start signal indicating the image position of each photographed frame to the magnetic recording section is added, and an image information recording device is added, which imprints the examination image of the subject on the roll film and records the image. This is done by means of an X-ray indirect radiograph which records information magnetically in digital quantities.

[For production]

In an X-ray indirect imaging device configured in this way, a roll film with a magnetic coating applied to a predetermined area other than the image area of each photographic frame is loaded into the camera, and an examination image of the subject is transferred onto this roll film. At the same time, a magnetic recording section of an image information recording device attached to the photographing camera sends image identification information of the subject and an image start signal indicating the image position of each photographic frame to the magnetic coating section of the roll film. The image information contained therein is magnetically recorded in digital quantities.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of an X-ray indirect photography apparatus according to the present invention. This X-ray indirect photography device
The system emits X-rays and images the inspection images onto a roll film that has a magnetic coating applied to predetermined areas other than the image area of each photographic frame. .

It has an X-ray tube 7, an X-ray detector 8, a distributor 9, a photographing camera 10, a one-winding control circuit 11, and a control signal generation circuit 12.

The X-ray high voltage device 6 generates a predetermined high voltage and applies it to the X-ray tube 7. The X-ray tube 7 receives a high voltage from the X-ray high-voltage device 6 and emits X-rays 13 to the subject 5 . The X-ray detector 8 converts the transmitted X-ray image transmitted through the subject 5 into an optical image, and is composed of, for example, an image intensifier. The distributor 9 guides the optical image output from the X-ray detector 8 to the photographing camera 10, and is made up of a combination of a plurality of lenses. The photographing camera 10 records an inspection image of the subject 5 on a recording medium by photographing an optical image incident through the distributor 9, and has internally recorded images of each photographed frame as shown in FIG. A roll film 14 is loaded with magnetic coating on predetermined portions other than the image area, for example, the upper side 14a and the lower side 14b.

The winding control circuit 11 controls the roll film 14 loaded in the photographing camera 4o to be wound frame by frame, and drives, for example, a winding remoter (not shown). The control signal generation circuit 12 controls the imaging operations of the above-mentioned components, and includes the X-ray high voltage equipment!
6, the winding control circuit 1
1, a frame advance signal S2 is sent out.

Here, in one aspect of the present invention, an image information recording device 15 is added to the photographing camera 10.

This image information recording device 1115 magnetically transfers image information including image identification information of the subject 5 and an image start signal indicating the image position of each photographed frame to the magnetic coating portion 16 of the roll film 14 in digital quantities. This is a magnetic recording section 17.

Image identification information input section 18 and one image identification information storage circuit 19
and an image start signal generator 20. The magnetic recording section 17 is a section that actually records image information on the magnetic coating section 16 (see FIG. 2) of the roll film 14, and has a head 21 that magnetically records digital information, and also has a head 21 that magnetically records digital information. image identification information storage circuit 1
9 and a recording circuit 22 for converting signals from an image start signal generator 20 to be suitable for magnetic recording.

Two heads 21 are provided so as to be in contact with both the upper side 14a and the lower side 14b of the roll film 14, and the image information of the inspection image is transferred to the upper side 14a and the lower side 14b of the roll film 14. The zero image identification information input section 18, which is designed to record on the magnetic coating sections 16 and 16 applied to both, is connected to the magnetic recording section 17.
The image identification information storage circuit 19, which includes a personal computer, for example, is used to input digital image identification information of the subject 5 to be recorded on the magnetic coating part 16 of the roll film 14.
It stores the input image identification information, reads out this image identification information, and sends it to the magnetic recording section 17, for example, a 0 image start signal consisting of a storage circuit using a magnetic disk, floppy disk, IC memory, etc. The generator 20 generates an image start signal indicating the image position of each photographed frame to be recorded on the magnetic coating section 16 of the roll film 14 by the magnetic recording section 17, and sends it to the magnetic recording section 17.

Next, the operation of photographing an inspection image and recording image information in the X-ray indirect imaging apparatus configured as described above will be explained with reference to FIGS. 3 and 4.

First, digital image identification information of the subject 5 to be imaged is input in advance using the image identification information input section 18 shown in FIG. This can be done, for example, at the time of reception in a group medical examination.Then, this input image identification information will be
The images are sent to the image identification information storage circuit 19 and sequentially filed. The file structure is, for example, as shown in Table 1.
It consists of patient number, name, date of birth, gender, etc.

Table 1: This image identification information is necessary to distinguish between a large number of test images and to know detailed information about the test images, and there are slight differences in the items depending on the facility conducting the mass screening. .

Next, the control signal generating circuit 12 generates a photographing signal S as shown in FIG. 3(a) and sends it to the X-ray high voltage device 6. Then, the X-ray high voltage device 6 generates a predetermined high voltage, the high voltage is applied to the X-ray tube 7, and the X-ray 13 is emitted from the X-ray tube 7.
is emitted to the subject 5. The transmitted X-ray image transmitted through the subject 5 is converted into an optical image by the X-ray detector 8, amplified in brightness, and guided to the photographing camera 10 via the distributor 9. Then, as shown in FIG. 4, the roll film 14 loaded inside the camera 10 has the following properties:
The inspection image 2 is imprinted on the image area of a certain photographic frame 23a. When the photographing of one inspection image 2 is completed, in order to photograph the fifth photographic frame 23b, the control signal generating circuit 12 generates a frame advance signal S2 as shown in FIG. Send to. Then, the one-winding control circuit 11 drives a winding remoter (not shown) to wind the roll film 14 by one frame.

At the same time as the roll film 14 is fed frame by frame, the control signal generating circuit 12 first generates an image start recording signal S as shown in FIG. 3(c), and sends it to the image start signal generator 20. Then, the image start signal generator 20 generates an image start signal ST indicating the image position of the currently imprinted photographic frame 23a, and sends it to the magnetic recording section 17. The image start signal ST is transmitted to the magnetic recording section 1.
The recording circuit 22 of 7 converts the signal to be suitable for magnetic recording, and the head 21 outputs a digital image start signal S.
As shown in FIG. 4, T is the magnetic coating portion 16.
Next, the control signal generation circuit 12 generates an image identification information recording signal S4 as shown in FIG. 3(d) and sends it to the 1 image identification information storage circuit 19. Then, the image identification information storage circuit 19 reads out the image identification information ID of the subject 5 corresponding to the currently taken examination image 2 from the files shown in Table 1, and sends it to the magnetic recording section 17.

The image identification information ID is the recording circuit 2 of the magnetic recording section 17.
2, the head 21 is converted to be suitable for magnetic recording.
As shown in FIG. 4, the upper and lower sides 14a, 14 of the roll film 14 are
The image is recorded following the image start signal ST in the magnetic coating section 16.16 of b. Furthermore, at this time.

Each item of the image identification information ID read out from the image identification information storage circuit 19, such as the patient number, name, date of birth, etc., is stored in the magnetic coating part 16 of the upper side 14a of the roll film 14 and the lower side 14b of the roll film 14 by the recording circuit 22. What is necessary is just to distribute and record to the magnetic coating part 16 suitably.

In this way, as shown in FIG. 4, the test image 2 of the subject 5 is imprinted on the photographic frame 23a with the roll film 14, and the image start signal ST and the image identification information ID of the subject 5 are can be magnetically recorded in digital quantities.

Next, the roll film 14 is advanced by one frame, and the next frame 2 is placed at the shooting position in the camera 10.
3b is set, the next inspection image of the subject 5 is imprinted, as shown in FIG.

Then, when further frame-by-frame forwarding to the next photographic frame 23c, the image start signal ST is applied to the magnetic coating portion 16.16 of the photographic frame 23b on which the above inspection image is imprinted.
and the image identification information ID are recorded. From now on, by repeating this operation sequentially.

Each photographic frame 23a, 23b of the roll film 14.

The image start signal ST and the image identification information ID can be recorded in digital quantities in correspondence with all the inspection images 2, 2°, etc. that are imprinted on the images 23c, .

In addition, in FIGS. 2 and 4, the roll film 1
Although the example in which the magnetic coating is applied to both the upper side part 14a and the lower side part 14b of 4 is shown, the present invention is not limited to this, and it is also possible to apply the magnetic coating to only one of them. Only one head 21 of the recording section 17 is provided so as to be in contact with either the upper side 14a or the lower side 14bi of the roll film 14, and the image information of the inspection image 2 is recorded on the upper side 14a of the roll film 14.
Alternatively, recording is performed on the magnetic coating portion 16 applied only to either one of the lower sides 14b.

Further, in FIG. 1, the image identification information input unit 18 is shown as using a personal computer, but the present invention is not limited to this.For example, the image identification information storage circuit 19
Connect a card reader to the
An auxiliary storage medium such as a C card or an optical card may be inserted, and the image identification information of the subject 5 stored in the memory may be read and input.

Furthermore, although FIG. 4 shows only the case where it is applied to the conventional recording format of the roll film 1 shown in FIG. 5(b), the present invention is not limited to this.
The present invention can be similarly applied to the recording format of the roll film 1 shown in a) or (c).

Furthermore, in FIG. 1, a simple imaging device was used as the imaging system, but for example, a fluoroscopic imaging device combined with an X-ray television device can be applied in the same way when imaging a digestive organ or the like.

〔Effect of the invention〕

Since the present invention is configured as described above, each photographed frame 23
A, 23b, . At the same time, each photographic frame 23a, 23b, .
The image start signal ST indicating the image position of... and the subject 5
Image information including image identification information ID can be magnetically recorded in digital quantities. Therefore, in order to digitize the roll film 14 photographed by the indirect X-ray imaging apparatus of the present invention, each photographic frame 23a, 23b, . . .
・At the same time, the inspection image 2 imprinted on the magnetic coating part 1 is digitized by a film digitizer.
All of the image identification information ID of the subject 5 recorded on the image sensor 6 can be read as digital information by a magnetic reader or the like.

In addition, since the position of the inspection image 2 imprinted on each photographic frame 23a, 23b, . The position of the photographed frame of image 2 and the position of digitization do not deviate. According to the present invention, the inspection image 2 of the photographed roll film 14 can be smoothly digitized, and the Digital image identification information ID of the specimen 5 can be obtained easily and quickly. Therefore,
The operability of digitizing test images in mass medical examinations and the like can be improved, and the throughput can be improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the indirect X-ray imaging device according to the present invention, Fig. 2 is a plan view showing a roll film coated with a magnetic coating, and Fig. 3 is a photographing of inspection images and recording of image information. FIG. 4 is an explanatory diagram showing an example of a recording format of an inspection image and image information on a roll film, and FIG. 5 is an explanatory diagram showing a conventional recording format of an inspection image on a roll film. 2... Inspection image, 5... Subject, 6... X-ray high voltage device, 7... X-ray tube, 8... X-ray detector, 9... Distributor, 10...・Photo camera. DESCRIPTION OF SYMBOLS 11... Winding control circuit, 12... Control signal generation circuit, 14... Roll film, 14a... Upper side part, 14b... Lower side part, 15... Image information recording device, 16... ...Magnetic coating section, 17...Magnetic recording section. 18... Image identification information input unit, 19... Image identification information storage circuit, 20... Image start signal generator. 21... Head, 22... Recording circuit, 23
a~23c... Shooting frame, ■... Image area,
ST: Image start signal, ID: Image identification information.

Claims (2)

[Claims] (1) X-rays are emitted from an X-ray tube, the transmitted X-ray image transmitted through the subject is converted into an optical image, and a roll is magnetically coated on a predetermined area other than the image area of each photographed frame using a photographing camera. In an X-ray indirect photography apparatus that records an examination image of a subject on a film, a magnetic recording section having a head for magnetically recording digital information on a magnetic coating section of a roll film loaded in the photographing camera; an image identification information input section for inputting digital image identification information of the subject; an image identification information storage circuit for storing the image identification information from the image identification information input section and sending it to the magnetic recording section; and an image identification information storage circuit for each photographed frame. An image information recording device consisting of an image start signal generator that sends an image start signal indicating the image position to the magnetic recording section is added, and an image information recording device is added, which imprints the examination image of the subject onto the roll film and converts the image information into digital An X-ray indirect photographing device characterized by magnetically recording the amount. (2) The head of the magnetic recording section of the image information recording device is:
A magnetic coating part is provided so as to be in contact with only one or both of the upper side and the lower side of the roll film, and the image information of the inspection image is transmitted only to the upper side and/or the lower side of the roll film. 2. An indirect X-ray imaging apparatus according to claim 1, wherein the X-ray indirect photographing apparatus is configured to record images.