JPH0731318Y2 - X-ray film ID automatic recognition device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an X-ray film ID automatic recognition device.

[Conventional technology]

Conventionally, in the X-ray film image reading apparatus, when reading an image, a method of manually inputting patient and other information regarding the image has been generally adopted. 1000 a day
In a large hospital where more than one X-ray image is generated, there is a problem in that when an X-ray film is used to input patient and other information in an image reading apparatus, the input is time-consuming and impractical. Therefore, it is essential to develop a method of printing a patient ID on an X-ray film and automatically recognizing it.
As a realization means, it is considered to use a specific position barcode recognition mechanism or a specific position optical character recognition mechanism.

[Problems to be solved by the invention]

The bar code recognition mechanism and the optical character recognition mechanism limited to a specific position of the X-ray film such as the conventional X-ray film ID automatic recognition apparatus described above are adapted to various X-ray photographing apparatuses and various X-ray film sizes. However, there is a problem in that it can be adapted only to a specific X-ray imaging apparatus or an X-ray film of a specific size. In addition, it is necessary to manually attach a barcode to a specific position manually, which is also inconvenient from this point of view, and there is a problem that it is not suitable for automation.

The purpose of the present invention is to scan only the four linear scanning lines set corresponding to each type of film size set in advance by utilizing the characteristics of the barcode, so that the patient ID printed on any position on the four sides of the film The position information and the patient ID information are obtained by detecting the information and the character string end code.
By providing a means for extracting the patient character string information from the image reading scan data from the information position and the character string end code position, and providing a means for managing the patient character string information separately from the image data, X-ray film ID
It is to provide an automatic recognition device.

[Means for solving problems]

The apparatus of the present invention comprises an X-ray film reading means for positioning an X-ray film at a fixed position and reading image data, an X-ray image, a bar code indicating a patient ID, and patient character string information.
X of arbitrary size developed including character string end barcode
In order to recognize and detect the bar code and the character string end code placed at arbitrary positions in a specific area with respect to the line film, only on a specific straight line about the four periphery of each size of the X-ray film. The scanning means for scanning, the position information of the bar code detected from the scanning means, and the position information of the character end code, the information in the area sandwiched between the bar code and the character string end code is used by the patient. In addition to the image data extracted as character string information and read from the X-ray film, an extraction holding unit that holds the barcode and the extracted patient character string information as an X-ray film ID is included.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

The developed X used in the present invention is shown in FIGS. 3 (a) and 3 (b).
A line film 31 is shown. FIG. 3C is a partially enlarged view. For each of the four sides of the X-ray film 31, the patient ID information bar code 35, the patient character string information 36, and the character string end code 37 are scanned by specific scanning straight lines 34-1 to 34-4.

The patient character string information 36 is printed at an arbitrary position on the edge of the X-ray film 31. The printing position is specified by the X-ray imaging device and the X-ray film storage cassette case, but in the process of being collected by the X-ray film reading device, there are differences due to various X-ray imaging devices and various X-ray film storage cassette cases. Because of this, the baking position is not constant.
However, with respect to the X-ray film, there is no problem that information exists up to a depth direction of about 3 cm at the peripheral portion. Reference numeral 33 in FIG. 3 (b) indicates its constant depth. The patient character string information 36 includes a date of imaging, a patient name, an imaging region code,
This is image-related information such as a shooting order, and most of it is composed of handwritten characters, kanji of printed characters, and kana mixed characters.
The patient character string information 36 is constructed as shown in FIG. 3C so as to be sandwiched between the patient ID information 35 consisting of a bar code and the character string end code 37.

Due to the characteristics of the barcode scanning, it is possible to obtain the content and the position information of the patient ID information 35 by one scan in the lateral direction, and similarly it is possible to obtain the position information of the character string end code 37. In this embodiment, as shown in FIG. 3 (b), oblique straight line scanning lines 34-1 to 34-1 which are oblique sides of a right-angled triangle composed of one side of the X-ray film sandwiching a right angle and a constant depth 33.
34-4 is specified. This has the effect of increasing the width of the linear scanning line for a bar code printed on an arbitrary area of each side and the effect of setting the optimum scanning line so that the minimum number of scanning times can be achieved for various films. is there. In FIG. 3B, each side is scanned four times, one time each. The scanning mechanism may have a structure in which the scanning of the next side may be terminated when the barcode is detected in the scanning of each side.

Further, in this embodiment, as shown in FIG. 4 (a), image sizes (41,42,43,44), (41,42,45,44), (41,46,4)
5,44), (41,47,48,44), and (41,47,49,44) five sizes (where (41,42,43,44) are sides 41,42,43,44) (Indicates the size to be encircled), each edge circular scan is performed under the reading condition that the upper left corner, the upper side, and the left side are aligned with each other, and 40-1 to 40-9 shown in FIG. 9 kinds of oblique linear scanning are performed.

Of the five image sizes, the image (41, 42, 43, 44) is called a half-cut size, and has a horizontal width of 35.5 cm and a vertical width of 43.2 cm.
The image (41, 42, 45, 44) is called the large size and the width is 35.5c.
m, vertical width 35.5 cm. Since the horizontal width of the large-angle size is the same as the half-cut size, when the upper left corner, upper side, and left side of the two types of images are combined, the right side edge is also aligned, and the diagonal straight scanning lines 40-1, 40-2 , 40-4 are common, and the diagonal straight line scan line 40-3 for the lower side of the large-angle size corresponds individually to the diagonal straight line scan line 40-3 for the lower side of the half-cut size.

In the example of FIG. 4 (b), the patient ID information printed at arbitrary positions on the side line portion of the X-ray film of five sizes is collected by any one of the nine scans in the example of FIG. 4 (b). Is done. Even if the X-ray image area is scanned, the characteristic pattern of the bar code cannot be found, so that the diagonal straight line scan 40-9 is harmless in the half-cut size.
In this sense, innumerable random scanning with a laser beam may be performed, but performing random scanning over the maximum area (35.5 cm x 43.2 cm) not only complicates the scanning mechanism but also increases the scanning time. Increased and large loss is not preferable.

The patient ID information 35, the patient ID information position, and the position of the character string end code 37 can be detected from the oblique linear scan 34-1 of FIG. 3 (c). The X-ray film image 31 includes image data 32, patient ID information 35, patient character string information 36, and character string end code 37.
It is possible to distinguish the image data and the patient character string information 36 from the image information obtained from the X-ray film reading mechanism by the patient ID information, the position information and the character string end code position information. is there. It is possible to recognize the area of the patient character string information 36 from the position information in the horizontal direction obtained by linear operation and the vertical width according to the general rule of depth of about 3 cm, and extract the patient character string information 36 from the image information. it can.

FIG. 5 shows an X-ray film ID management table that manages the patient ID information 35, the patient character string information 36, and the image data 32 thus obtained. The patient ID information 35
Is managed and stored in the patient ID information stack 51, the patient character string information 36 in the patient character string information stack 52, and the image data 32 in the image data stack 53. In this embodiment, the patient ID information is extracted as the management information, the patient character string information 36 is extracted as the small area image (picture) information, and the image data 32 is extracted as the large area image (picture) information. Shows. Furthermore, patient character string information 36
Therefore, it is also possible to recognize as a character and make a database by using the character recognition mechanism.

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

The X-ray film is fed by the X-ray film reading mechanism 1 at a predetermined position, that is, various X-ray films are fed so that the upper left corner and the upper side and the left side are always aligned. When the X-ray film is sent to a predetermined position, the laser beam generation mechanism 3 generates a laser beam, and at the same time, the mirror control mechanism 2 and the linear scanning mechanism 5 direct the laser beam to a predetermined scanning line (5 in the above example). It is controlled so as to draw 9 scanning lines) for the X-ray film of the seed. The laser beam detection mechanism 4 is controlled to detect the laser beam reflected light, and X
The line ID information extraction / holding mechanism 6 receives the electric signal output from the laser beam detection mechanism 4 and separates the patient ID information and the patient character string information and holds them separately from the X-ray image data.

FIG. 2 is a sketch of the scanning mechanism 10 including the mirror control mechanism 2, the laser beam generating mechanism 3, the laser beam detecting mechanism 4 and the linear scanning mechanism 5 of FIG.

The laser beam emitted from the laser beam generator 21 passes through a prism 23 and is a direct scanning device 24 composed of a reflection mirror.
At an arbitrary angle at and is projected on the X-ray film 26. The bar code and other image reading signals are reflected again by the linear scanner 24 in the direction opposite to the incident angle, and enter the laser beam detector 22 via the prism 23. Here, the linear scanner 24 is controlled by a mirror controller 25 so that the laser beam operates a predetermined scan line position on the X-ray film 26.

In this way, in this embodiment, the X-ray film ID can be automatically and efficiently read for various X-ray films.

[Effect of device]

As described above, according to the present invention, several kinds of specified oblique linear scanning are performed for an arbitrary X-ray film size, and
From detection and identification of ID information and detection of character string end code,
There is an effect that the position of the character string information of the patient can be recognized and the automatic recognition of the inexpensive and simple X-ray film ID can be performed.

[Brief description of drawings]

1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a sketch of the scanning mechanism of FIG. 1, FIGS. 3 (a) and 3 (b) are plan views of an X-ray film, and FIG. c) is a partially enlarged view of the X-ray film, FIG. 4A is a plan view of the X-ray film of various sizes, FIG. 4B is a scanning line diagram for automatic ID recognition, and FIG. 5 is management. FIG. 1 ... X-ray film reading mechanism, 2 ... Mirror control mechanism, 3
... Laser beam generating mechanism, 4 ... Laser beam detecting mechanism, 5 ... Linear scanning mechanism, 6 ... X-ray ID information extracting and holding mechanism,
10 ... Scanning mechanism, 21 ... Laser beam generator, 22 ... Laser beam detector, 23 ... Prism, 24 ... Linear scanner, 25 ...
Mirror controller, 26 ... X-ray film, 31 ... X-ray film,
32 ... Image data area, 34-1 to 34-4 ... Oblique linear scanning line, 35 ... Patient ID information, 36 ... Patient character string information, 37 ... Character string end code, 41-49 ... X-ray film side, 40 -1 to 40-
9 ... Scan line, 51 ... Patient ID information stack, 52 ... Patient character string information stack, 53 ... Image data stack.

Claims (1)

[Scope of utility model registration request] 1. An X-ray film reading means for positioning an X-ray film at a fixed position to read image data, an X-ray image, a bar code indicating a patient ID, patient character string information, and a character string end code. Fully developed X of arbitrary size
In order to recognize and detect the bar code and the character string end code placed at arbitrary positions in a specific area with respect to the line film, only on a specific straight line about the four periphery of each size of the X-ray film. Scanning means for scanning, position information of the bar code detected from the scanning means and position information of the character end code, the information in the region sandwiched between the bar code and the character string end code, the patient In addition to the image data extracted as the character string information and read from the X-ray film, the bar code and the extracted patient character string information are included as an X-ray film ID, and an extraction holding unit is included. Automatic X-ray film ID recognition device.