JP2821524B2 - X-ray image processing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the medical field.
X-ray image diagnostic processing device, more specifically X-ray film
Is converted to a digital value and reproduced on a display device for observation.
The present invention relates to a line image processing device. 2. Description of the Related Art Conventionally, image diagnosis in the medical field is called X
Hang the film image taken on the line on the Shakasten,
Pointed to observing. However, normal X-ray fill
The system has been trying to make the diagnosis site easier to observe.
Contrast of about 1.0 to 1.5D for easy to understand density range
The shooting conditions are slightly shifted
Overexposure or underexposure
Not only adversely affects the diagnosis by interpretation, but also
Shadows to increase X-ray exposure to patients.
Was. In addition, subject contrast and diagnostic eye
Because the targets are different, there are different films for each,
Its management was also cumbersome. However, with the recent development of computers,
Computerization is becoming more common in the medical field
Was. This trend is also rapid in the field of diagnostic imaging,
Using CT, ultrasonic diagnostic equipment, radioisotope
The spread of diagnostic equipment is remarkable. Soshi
To connect various diagnostic devices with a computer,
"Comprehensive Image Diagnosis" for Comprehensive Diagnosis of Tea Image
The concept has emerged. However, X-ray film images
Is essentially an analog image and is the most
Despite being frequently used and valued
Not be able to take part in comprehensive diagnostic imaging.
It is an obstacle to computerization. [0004] An object of the present invention is to provide an image processing method.
Is output, the state of image processing performed before storage
Output image data, and the amount of image data
Without increasing the quality of the new processed image.
X-ray image processing with improved image diagnostic performance
It is to provide a processing device. [0005] An X-ray image according to the present invention is provided.
The processing unit converts the X-ray film into digital values and
X-ray image data input means for inputting data, and the image
An image memory for temporarily storing data;
Data to be read out from the image memory and reproduced and displayed.
Display means, and image storage means for storing the image data
An X-ray image processing apparatus comprising:
Means for displaying the image data and the image data in the image display
With the processing condition data used to display the
It is configured to memorize in response. FIG. 1 is an X-ray image processing apparatus according to the present invention.
1 is a block diagram of a medical image system including a device. Net
Mainly on the work 9, the central processing unit 10 and the image according to the present invention.
The image processing device 1, the image diagnostic device 13, and the like are connected.
You. The central processing unit 10 controls the entire system,
A processing unit 11 for managing a database;
It comprises an image file unit 12 to be managed. Image processing device 1
Is generated on an unexposed X-ray film 3 by a normal X-ray device 2.
After exposure to X-rays that have passed through the patient,
X-ray film 4 (hereinafter referred to as X-ray film)
Digitize X-ray image data input means the film
Digitized by Scanner 5 and Film Scanner 5
Process and display the data,
Console 6 with the function of sending
For hard-copying digital image data of level 6
User film printer 7. Laser film pre
The printer film 8 exposed by the printer 7 is developed.
Used for storage and diagnosis, or sent to another department.
It is. The image diagnostic device 13 is a CT device,
Wave diagnostic device, and of course, the X-ray image processor of the present invention.
Or a physical device. FIG. 2 is an external view of the image processing apparatus 1.
Film scanner 5, console 6, laser film
Each linter 7 is shown as a unit. Fi
Since the Lum Scanner 5 is a unit alone,
Can be used in a location that is easy for the operator to operate
It is possible. Console 6 has a film view
Wa 63 and Image display means Two CRTs (CRT-A
64, CRT-B65). CRT
The exterior that also surrounds the
I'm starting. Under the CRT, there is a man-machine interface
Monitor 622 for operator
It is installed diagonally. Before the monitor 622
There is a mouse 625 on the console, and most of the normal controls
You can do it with the mouse 625 while watching the monitor 622
Swelling. Keyboard 624 is also connected
However, since it can usually be operated only with the mouse 625, the storage position
It is stored in a place. The optical disk device 66 is
For easy insertion and removal of optical discs
And stored on the right console. Laser film pudding
Although the console 7 is installed beside the console 6 in FIG.
Since it is knitted, the interface cable
By extending it, it can be installed near the film processor
Is also good. Also, since the console 6 becomes considerably large,
CRT section is divided to improve
In addition, the lower part of the console 6 can be divided into two parts.
ing. FIG. 3 shows a structural diagram of the film scanner 5.
You. The X-ray film 4 has a film transport path Pa as shown.
Is transported along a simple route. The film scanner 5
Normally, the density of 0 to 4D of the X-ray film 4 is reduced to 10 bits.
Digitize. This is the performance of X-ray film
Concentration range is sufficient for the naked eye
Also have sufficient resolution. Furthermore, X-ray film 4
Depending on the condition, the concentration range of 0 to 2D, 1 to 3D, and 2 to 4D
Can be digitized to 10 bits, limited to the box
Noh. Furthermore, with respect to the transmittance of the X-ray film 4,
It is also possible to linearly convert the data into 10 bits. this
The five types of reading modes, including the normal reading mode, are
It can be selected with a switch. This makes it even more detailed
X-ray exposure underexposure and exposure
Digitizing with sufficient accuracy for film
Wear. The film scanner 5 has a film size
Is detected, and the pixel size at the time of quantization is determined. This
There are five types of X-ray films, usually from six slices to half slices.
Types of film are often used, but small
Films are often taken on limb bones and breasts.
Need to express fine structures such as beams and mammary glands
Because it is necessary to quantize with a small pixel size
is there. For example, this film scanner 5
100 μm for the film, 12
5 μm, 175 μm for four large, large angle, half cut
It is possible to make
Dynamically select pixel size. As a result,
2000 x 2500 pixels for lum, 200 for quarter-cut film
0x2400 pixels, large four films 1580x200
0 pixels, large-angle film 2000x2000 pixels, half cut
The film is digitized at 2000 x 2450 pixels
You. The X-ray film 4 is scanned by laser while being transported.
Irradiated with a laser beam of constant intensity scanned by the unit 51
You. Since the stability of the laser beam intensity has an immediate effect on the image quality, it is
Use a qualitative laser or use a stabilizing device
There is a need. Here, Uniphase's Helium Neo
Laser 1105P (5mW, maximum noise 0.1% rm)
s (1 kHz to 10 MHz)). Also,
Laser power supply is also important for stability of laser light intensity.
Although there is a problem, in this film scanner 5, AC boost
The power supply of the formula is used, and the stability is secured.
Helium neon laser produces drift in output,
In the film scanner 5, X is read immediately before image information is read.
When the line film 4 is not at the scanning position,
It is almost no problem because we are doing
No. If you use a noisy laser,
Detects the light intensity and activates an intensity modulator such as AOM or EOM.
It is necessary to stabilize the intensity of the laser beam by using it. Ma
Also, when using a semiconductor laser, direct modulation is possible.
Direct feedback to the laser driver for stabilization.
And stabilize it. About these lasers
The same applies to the laser film printer described later.
is there. The laser beam applied to the X-ray film 4
The transmission intensity is modulated according to the concentration. X-ray film
The laser light transmitted through the
Is converted into an electric signal by the multiplier 541.
You. The electric signal is converted into a time-series digital value by the electric processing unit 56.
Is converted to FIG. 4 shows the structure of the console 6. Conso
Is composed of three parts: upper, lower left, and lower right.
Is a film viewer 63, CRT-A64, CRT-
B65. The lower left is the keyboard 624, monitor
622, mouse 625, CPU 621, magnetic disk 6
23 are arranged. In the lower right, an optical disk device 66,
An image controller 61 is provided. And the top, left
The lower and lower right parts are used to improve the portability during loading.
Each has a structure that can be divided. FIG. 5 is a block diagram showing the inside of the console 6.
Show. The console 6 is roughly divided into an operator and
Image processing device 1
Controller 62 for controlling the whole, controller
Process or accumulate image data based on instructions from
The image controller 61 to transfer or re-read the digital value
Two CRTs for raw display (CRT-A64, CRT
-B65), a film for observing the X-ray film 4
Viewer 63, a light source for storing image information locally
Disk device 66. Further, the controller 62 includes a CPU 621.
With the magnetic disk 623, monitor 622,
A mouse 625 and a keyboard 624 are provided. Also,
The image controller 61 includes a high-speed image data bus 618 and
And the external network, centered on the control bus 619
Communication control unit 611 that controls the interface with
Scanner system that controls the interface with Lum Scanner 5
Control unit 617, through the film scanner 5 and the network 9
Image data for storing the image data
Memory 616, image memory data to operator's instruction
An image processing unit 614 for performing image processing according to the above, an image memory 616
Read out the data from the
To play back and display on two CRTs while converting
Control unit 612, interface with optical disk device 66
Control unit 615, laser film printer
Printer controller 613 for interfacing with
Is configured. The image memory 616 stores the image of the X-ray film.
It has enough capacity to store data as it is. here
Means that the image data of the film scanner 5 is up to 2000 ×
Since it is 2500 pixels x 10 bits, 5 megawords x
It has a memory of 2 screens with a capacity of 10 bits. The display control unit 612 stores the image memory 616
Control to acquire data via the high-speed image data bus 618.
And has a function of displaying on the CRT. The resolution of a CRT is
1024 x 1280 pixels, up to 2000 x 250
Since the entire original image of 0 pixels cannot be displayed directly,
Digitize the X-ray film 4 with a film scanner 5
While reading or reading image data from the optical disk
When displaying the image in the vertical direction, reduce the size by 1/2 in the vertical and horizontal directions.
And the whole image is displayed. Thinning out method of reduction
There are various processes such as averaging process and averaging process.
Excellent in image quality. Also, the display brightness of the CRT
Due to the narrow dynamic range, only about 100 gradations are displayed.
The 10-bit image data cannot be
It is converted to 8 bits by the backup table. This look
The cup table is for CRT-A64 (LUT-A)
There are two for CRT-B65 (LUT-B). this
By using LUT-A and LUT-B,
Perform density conversion without changing image data at all
It has become possible. Also, in the display control unit 612,
Perform image enlargement processing to observe a part of the image more precisely.
It is possible to do. 2x and 4x for enlargement processing,
Six times and eight times are prepared. About double processing,
Since the image is always reduced to 1/2 and displayed, the image memory 6
1024 x 1280 pixel data in 16
Display as it is. For 4x, 6x and 8x, the image
One pixel of memory is 2 × 2 pixels, 3 × 3 pixels, 4 × 4 pixels
It is displayed as. If it is 4 times, the pixel on the CRT
Is not so noticeable, so there is little problem with image quality.
No. 6x, 8x enlargement process observes film images
The magnification is too large to be meaningful. Only
And 512 x 512 images such as CT, US, and RI
Pixels, 256 × 256 pixels, 128 × 128 pixels, etc.
When an image is transmitted through the communication control unit 611,
CRT displayable pixels of 1024 x 1280 pixels
Image data is too small compared to
It is set so that it is usually up to 4 times
Is enough. When the image is enlarged, the entire image cannot be displayed
Images can be moved vertically and horizontally using the scroll function.
doing. This is the display location in the image memory 616
This is done by changing the start address of. Also display
The control unit 612 controls the first screen and the second screen in the image memory 616.
Which side is displayed on CRT-A64 or CRT-B65?
It also has the function of independently selecting whether to show. The image processing unit 614 is provided in the image memory 616.
Data frequency processing, rotation, movement, up / down / left / right inversion
Or calculate statistics such as histograms, averages, and variances.
Calculation or image data of two screens in the image memory 616.
Performed linear operation or compressed image data
To For this reason, the image processing unit 614 has 5 megabytes.
It has a word x 20 bit work memory. 2
With a data width of 0 bits, the operation accuracy is poor depending on the processing.
However, since the memory cost is high, from the viewpoint of image quality
This bit width is used. However, the bit width is 32 bits
Can be extended to Frequency processing is
This is performed by a convolution operation. First, for frequency processing
Based convolution weight coefficient matrix A
(I, j) (i = integer of -k to k, j = integer of -l to l
) And the work memory is also cleared to 0. Picture
Pixel data X (m, m) transferred from the image memory 616
n) is multiplied by a weighting factor A (i, j) to obtain the work memory
Add to the data W (m + i, n + j) to create a new W
Stored in the work memory as (m + i, n + j)
You. When this operation is performed for one screen, i or j is changed next.
And try again. Perform this operation (2k + 1) (2l + 1) times
Finally, the weighting coefficient A (i,
Multiply the reciprocal 1 / S of the sum S of j) to obtain the work memory
The image data that has been subjected to the predetermined frequency processing is stored
Therefore, this is transferred to the image memory 616. combo
If the solution weight coefficient matrix is increased,
Since the calculation time becomes very large, the size of 15x15
Limited to Also, to save the calculation time, A
When (i, j) = 0, the calculation is skipped.
High frequency because the size of the weight coefficient matrix is limited
Only a few components can be processed. Emphasize high frequency components
It is possible to obtain images like zero radiography
And makes it easier to see small lesions with low contrast
Effective but large contrast changes in the image
Pseudo-images also appear on the edge of the
It is important to see while comparing with the original image
It is important. Image rotation, movement, up / down / left / right inversion are for work
Calculate work memory address after transfer to memory
The data of the pixel closest to the address of the operation result
This is performed by transferring the image data to the image memory 616. Image times
Rolling and moving are combined with linear operation between two images
For subtraction of contrast photography or dual
Effective for energy subtraction.
You. In addition, the up-down and left-right reversal is applied to the film
When inserting film 4, left and right and up and down were inserted incorrectly
Sometimes needed. Histogram calculation is transferred
This is done by counting image data for each value.
You. The result is stored in the buffer memory in the image processing unit 614.
Is sent to the controller 62.
It is calculated here for histogram equalization.
LUT-A or LUT-B in the display control unit 612
Is rewritten. Also, the histogram, average value, and variance value
Naturally, it is also used when an operator performs image analysis. Picture
Image data compression involves working data from the image memory 616.
After transferring the data to the memory for compression and performing compression processing,
Sent to the storage control unit 615 for saving in the storage 66.
Or communicate with another image diagnostic apparatus 13 via the network 9.
It is transmitted to the communication control unit 611 to communicate. Next, the controller 62 will be described. Ko
The controller 62 includes the CPU 621 as a center and the entire device.
Software for controlling the body and data of various tables
Disk 623, such as data,
Mouse 625 to interface, keyboard
And a monitor 622. On monitor 622
Has an operation menu and a cursor.
While moving the cursor with the mouse 625, the
The operation is instructed by selecting the operation menu.
However, communication of image data is performed through the network 9.
Time or when the image data is saved in the optical disk device 66
Enter the patient ID and date when loading or loading.
When you need to press the keyboard 6
Put out 24 on the console and input necessary information. Con
The LUT-A and the LU of the display control unit 612 are provided in the controller 62.
There is a function of managing a plurality of TB data. Can manage
The number of table data is 20 and 10 of them are
This is used for initial registration, and is set when installing the device.
Operators other than the system administrator cannot change the
The ten can be changed by a general operator. Change
The method is as follows: the LUT data is displayed on the monitor 622 of the controller 62.
Display data creation graph. At this time, the graph
Related to the LUT of the image displayed on the CRT-A64.
Is displayed. Naturally, CRT-B
It is also possible to switch to the one displayed at 65.
You. Use the mouse 625 to change the graph appropriately
And the data is immediately stored in the LUT-
A, or transferred to LUT-B, in near real time
The density of the display image can be converted. So, the operation
While watching the display image on the CRT, the
You can change the data and create the best data
Wear. This data is stored in a lookup table for the operator.
If you register with an appropriate table name as
From now on, just select it and do the same density conversion process
be able to. Also, in these 20 table data,
Are registered for the initial setting of LUT-A and LUT-B.
Can also be. With this operation, LUT-A and B will be
Regardless of the state, the initial settings can be set with simple operations.
The image processing apparatus 1 can be returned
Is very effective when used. These, 20
Lookup table data and initialization flags
Are stored on the magnetic disk 623. Also monitor
622 shows the data of the two LUTs at that time.
It is now possible to display the deviation at any time in a graph
Therefore, confirmation can be easily performed. Also, the brightness of the CRT and the filter
The brightness of Lum Viewer 63 can be controlled by mouse 625
You. This is to select the brightness setting operation and
Specify which brightness of 63 or 2 CRTs should be adjusted
Then move the mouse 625 to the left or right and control accordingly.
The signal Sb or Sc, Sc 'changes and the brightness according to the signal changes.
Controlled every time. The two CRTs 64 and 65 have external
To reduce the adverse effect on image quality due to the reflection of light
In addition, an antireflection filter is attached to the surface. Anti-reflective
Currently, Toray E Filter II is used as a stop filter.
doing. This is because the surface reflection of the filter is almost
And the transmittance is about 50%, so the brightness of the CRT is halved.
However, the contrast is improved about twice.
Also, if the light from the film viewer 63 hits the CRT directly
The CRT has a hood so that it is not available. CRT
Are the horizontal synchronizing signal Sh (Sh ') and the vertical synchronizing signal Sv (S
v ′), luminance other than the analog video signal VD (VD ′)
There is a control signal Sc (Sc ').
1 can be controlled, and CRT
Can be adjusted. But manually adjust the brightness
Toggle internal switches for operators who want to adjust
The brightness of the knob on the CRT panel
It is also possible to vary the degree. The film viewer 63 has a fluorescent light inside.
There are two, which are lit by AC power. CPU
Whether the control signal Sa from 621 is off,
Is the film detection switch when no film is attached
When is off, the AC power is not turned on. Sa is on
State, and when the film is loaded, the detection switch
Switch is turned on, and the AC power is turned on. Normally,
Since Sa is in the ON state, the film can be mounted or
The film viewer 63 turns on or off.
Or The control signal Sb is a phase control signal of the AC power supply.
And the brightness of the film viewer 63 from the CPU 621.
The degree can be controlled. The optical disk device 66 includes an image memory 616
The data inside is compressed by the image processing unit 614, and the patient
Code such as name, patient ID code, imaging date, storage date
Information and lookups currently used for display
Stored together with the table data. Code information is
It will be used later when searching for images. This is how much
Although image data is compressed, image data is several hundred kilobytes.
Searching on images to cover 1 MB to 1 MB
Is too heavy on the operator,
This is for searching. Here, the input of the code information is key
I'm going to do it on board. Look-up table
The data is stored together with the searched image on a CRT.
When displaying on the screen, the image in the stored state is displayed as it is
This is to make it possible. Optical disk device 66
To save the data in the image memory 616 to the image
If the data is transferred to the work memory of the processing unit 614, the next processing
Data compression and optical
To make the operator wait while the data is stored in the disk device 66
Absent. However, the image data is loaded from the optical disk device 66.
When reading data from the optical disk,
While the data is being reproduced, the operator has to wait.
However, compared to the case without data compression, there is a considerable wait
Time is short. Storing image data raw on optical discs
Then, 5 megawords, about 6.3 megabytes of data
And the effective reading speed is only 200 kilobytes / second.
It takes about 30 seconds for the new optical disk device 66. Place
However, when compressed to about 1/20, the reading time is 1.5 seconds,
Practical use because it takes about 10 seconds even if the playback time is added
Will be possible. Next, the laser film printer 7 will be described.
explain. FIG. 6 shows the internal structure of the laser film printer 7.
The drawing is shown. Laser film printer 7 is a supplier
Unexposed printer film stored in magazine section 71
8 are taken out one by one and flattened through the transport section 72.
Send to the bed 73
The printer film 8 is placed on the table 79. Next,
While receiving image data from the linter control unit 613,
The laser beam LB scanned by the laser scanning unit 75 is converted into an image data.
Data with a signal based on the
As it moves, the printer moves vertically with the laser scan.
The film 8 is exposed. Flatbed 79 ends
The laser scanning ends, and the exposure of one screen
finish. The exposed printer film 8 is
Through the transfer unit 72 while being removed from the bed 79.
Then, it is stored in the receiving magazine 74. This is one
Screen recording ends. The supply magazine unit 71
Can store 0 unexposed printer films 8
Ability to meet continuous print demands
You. Exposed pre-storage that can be stored in the receive magazine 74
Up to 60 sheets of film 8 for
After several prints, the laser film printer 7
And develop with a developing machine. Pudding used here
Film 8 is sensitive to the wavelength of the laser.
I have to. Laser film printer 7
Mneon laser is used and the wavelength is 633 nm.
Therefore, use a film sensitized to red. Also,
The laser film printer 7 performs light modulation of the laser light LB.
Since the AOM is used as the modulator,
Cleanse is 1000: 1, practically about 600: 1
You. Because of the use of lasers, sensitivity requirements are not very high
Not severe. Characteristic curve of a film with such characteristics
Is shown in FIG. FIG. 7 shows a laser film printer 7.
The modulation characteristics of the optical modulator used in
You. This printer film 8 is used for ordinary X-ray photography.
Needless to say, it can be developed with the same processing as film.
No. For example, an automatic processor VX-400 (Konica Corporation)
), Developer XD-90 (manufactured by Konica Corporation), fixing agent
XF (manufactured by Konica Corporation)
By performing processing in 0 seconds, such characteristics can be obtained.
You. The laser film printer 7 is displayed on the CRT.
The purpose is to print the image
To perform the same density conversion as the CRT to the
Built-in lookup table (LUT-C), CRT
Display Lookup Table LUT-A or B
To the same characteristics as Also, a laser film printer 7
Inside, look for density characteristic correction of film 8 for printer
An up table (LUT-P) is built in. LU
TC is a 10-bit input and a 10-bit output, and the LUT
-Higher accuracy than A or B. This is better for film
Since the contrast resolution is higher than that of a CRT,
It is a higher degree. Image displayed on CRT
Is printed by the laser film printer 7, L
Transfer data from UT-A or LUT-B to LUT-C
After performing the smoothing process, rounding at that time
Make the error as small as possible. LUT-P is 10-bit input
It has a 12-bit output structure.
Even if the characteristics are slightly distorted, the gradation of the density will not be lost.
ing. Hereinafter, the operation of the image processing apparatus 1 will be described.
I will tell. The operator sits down at the console 6.
Follow the operation menu displayed on the monitor 622.
Then, the user operates the mouse 625 on the console to display the image processing device.
An operation instruction is given to the device 1. First, the operator
Insert the X-ray film 4 from the insertion opening of the Lum scanner 5,
The controller 62 is instructed to digitize an image. This
At the same time, specify the CRT for which you want to display
Good. Here, it is assumed that CRT-A64 is specified. Mochi
Of course, specifying CRT-B65, or both
It is also possible to specify. The controller 62 displays
The control unit 612 erases the screen of the CRT-A64 to black.
And instruct the scanner control unit 617 to receive data.
Give instructions. Then, the film scanner 5 enters the X-ray
4 digitization is started, and the data is sequentially scanned.
The image data is stored in the image memory 616 through the channel controller 617.
At the same time, the display control unit 612 places it on the CRT-A64.
Display. Therefore, the film scanner 5
Is completed and the X-ray film 8 is discharged.
At times, the image display is complete. Also, the displayed image
Image memory so that is the center of the displayable position of the CRT
616 contains data. The operator discharges
X-ray film 4 placed next to the CRT
When attached to the Lum Viewer 63, the Film Viewer 63
Is turned on, and the X-ray film 4 can be observed.
You. The operator updates based on the image on the X-ray film 4.
Enlarge CRT image for places you want to observe in detail
Or scroll the image or shift the density
Increased contrast and converted spatial frequency characteristics
Original X-ray film image and CR
The diagnosis is determined while comparing the images on T. Main picture
The X-ray film 4 used in the image processing apparatus 1 is, of course,
Normal ones are fine. Normal film is the naked eye
In the concentration range of 1.0 to 1.5 D,
Trust is high, but in other concentrations, contrast
Is low and the discrimination ability
It is a difficult state. Therefore, the image processing apparatus 1 is used.
Adjust the part you want to observe to your preferred density and contrast.
It is effective because it can be adjusted. However, the ability of this device
To make use of it effectively and for diagnosis, use the solid line in FIG.
The γ value is low, the linearity is good,
It is effective to use a film with a wide range of cleansing characteristics.
You. If it is to this extent, the diagnostic ability by the naked eye is
Compared to the conventional film with high γ value (broken line in FIG. 8),
Despite not knowing, the dynamic range is wide,
In particular, the amount of shooting
And the shooting conditions have become milder, and the latitude has been expanded.
This is because that. If this film is used, conventional
Since the sensitivity is almost the same as that of Soviet-based films,
X-ray equipment used in hospitals in Japan
At the same time, the patient's X-ray exposure is the same as before
Therefore, the burden on the patient does not increase. In addition, spatial frequency characteristics
Properties (MTF) and granularity also depend on the conditions of the film scanner 5,
For example, conditions such as pixel size and beam diameter
It has enough performance to perform. Coherence of laser light
For surface properties, maintain a surface condition that is less likely to cause interference.
I have. Note that a film having the characteristics shown by the solid line in FIG.
However, the present invention is not limited to this.
It is preferred that it be included in the claims of U.S. Pat.
And other properties and materials Open It was described in Akira
Are preferred. Further, two different images are displayed on two CRTs.
Processing and density conversion, and
Diagnosis is improved by performing diagnosis in comparison with the LUM image.
I can do it. Not only that, but one CRT
Through the work 9, the image of the CT or the like is sent to the central processing unit 10.
Received and displayed, or the same
Retrieve and display another x-ray film image of the patient
This makes it possible to make a comprehensive diagnosis. Image Display means As a laser film
An imager other than the linter 7 can be used. The imager
Receives analog signals for CRT and is built into the imager
Display on the CRT and display it on the film or mark for the imager.
Exposure is performed by projecting on paper. The present image processing device
1 has two CRTs 64 and 65, so the display controller
612 has a video signal changeover switch.
CRT-A64 video signal or C
For imager by switching between RT-B65 video signal
Output to the output terminal. Horizontal sync signal, vertical sync signal
Is the same for both CRTs, so there is no need to switch
No. Imagers expose to film or photographic paper
The sensitivity and characteristics are different.
And match. According to the present invention, when outputting an image,
Output the image that has been subjected to the image processing that has been performed
be able to. Also converts X-ray film to digital value
Stores both reproduced image data and image data for playback display
No need to save, preventing an increase in image data storage
can do. In addition, X-ray film is digital value
Since the image data converted to is stored, new processing
Image quality degradation of the image that has been subjected to
You.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a medical image diagnostic system including an X-ray image processing device according to the present invention. FIG. 2 is an external view of an image processing apparatus according to the present invention. FIG. 3 is a structural diagram of a film scanner. FIG. 4 is a structural view of a console. FIG. 5 is an internal block diagram of the console. FIG. 6 is a structural view of a laser film printer. FIG. 7 is a characteristic diagram of a film for a printer and a characteristic diagram of an optical modulator. FIG. 8 shows characteristic curves of a conventional film and an X-ray film for an X-ray image processing apparatus of the present invention. [Description of Signs] 5 Film scanner 6 Console 7 Laser film printer 63 Film viewer 64, 65 CRT 66 Optical disk device

──────────────────────────────────────────────────の Continuing on the front page (51) Int.Cl. ⁶ Identification code FIG06F 15/62 390A (72) Inventor Hitoshi Hosoya 1st Sakuramachi, Hino-shi, Tokyo Konica Corporation (72) Inventor Toshikazu Umeda Tokyo 1 Konica Corporation, Sakura-cho, Hino-shi, Tokyo (72) Inventor Yoshiyuki Ishimitsu 1 Konica Corporation, Sakura-cho, Hino-shi, Tokyo (72) Haruo Karasawa 1 Konica Corporation, Sakura-cho, Hino-shi, Tokyo ( 72) Inventor Hitoshi Yoshimura 1 Konica Corporation, Sakura-cho, Hino-shi, Tokyo (72) Inventor Hisashi Yonekawa 1 Konica Corporation, Sakura-cho, Hino-shi, Tokyo Examiner in Nagoya Odakura (56) References JP-A Sho 59 JP-83148 (JP, A) JP-A-59-149342 (JP, A) JP-A-59-10840 (JP, A) JP-A-57-66480 (JP, A) 58-72040 (JP, A) JP-A-58-201484 (JP, A) JP-A-59-28146 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A61B 6 / 00-6/03 G03B 42/02

Claims (1)

(57) [Claims] X-ray image data input means for converting an X-ray film into a digital value and inputting image data, an image memory for temporarily storing the image data, and reading and reproducing and displaying the image data from the image memory An X-ray image processing apparatus comprising: an image display unit; and an image storage unit that stores the image data. The image storage unit is configured to display the image data and the image data on the image display unit. An X-ray image processing apparatus configured to store data of used processing conditions in association with each other.