JPH0191837A - X-ray diagnostic apparatus - Google Patents

Abstract

PURPOSE:To easily compare and observe a plurality of images, by mounting the correction means interposed between an image collecting system and a display change-over means and adjusting the respective brightnesses and contrasts of the different images of an object to be examined from a plurality of X-ray TV imaging systems to the same level. CONSTITUTION:An X-ray TV imaging system and the monitor 8 in an examination room for displaying images in two directions are mounted to the examination room ER and recording devices 10a, 10b and the monitor 8 in an operation room for displaying images in two directions through a video signal correcting unit (VCU) 11 and a display change-over device 12 are mounted in an operation room OR. Herein, said unit 11 is equipped with a gain correcting circuit 11a and a gamma correcting circuit 11b and respectively inputs the video signals from camera control units (CCU) 5a, 5b, a DF apparatus 9 and the recording devices 10a, 10b and performs the constant control of the brightness and contrast levels due to gain correction and gamma correction to perform video output. Therefore, a doctor can easily observe a plurality of images set to both proper levels through the monitors 8 in the examination and operation rooms to compare both of them.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention relates to a plurality of X-ray TV image systems and Regarding X-ray diagnostic equipment having an image display system consisting of a plurality of monitors, in particular, it is possible to easily display a plurality of different images in one! This invention relates to an X12 diagnostic device that can detect X12.

(Prior Art) This type of cardiovascular pie-brain system is equipped with an X-ray source, an image intensifier (1, 1,), an optical system, and a TVam system consisting of a TV camera on a U-arm or the like. An X-ray TVla imaging system is configured, and this X-ray TV imaging system is
The examination room equipment is arranged around the patient's IT bed so as to face the desired diagnosis area of the patient, and the operating equipment includes a digital fluorography device (DFI
It includes an image processing device such as I>, a recording device such as a VTR (video tape recorder), a VDR (video disc recorder), and a plurality of monitor devices.

The diagnostic method collects fluoroscopic images of the subject's region of interest from two directions and displays them on two monitors, and also displays images of the region before and after injection of the contrast agent. Front and back images of the image were displayed on two monitors different from the two monitors mentioned above.

Furthermore, previous images of the area, for example, images before and after the treatment, are recorded on the VTR.

The images are read out from the VDR and displayed on two other monitors, thereby enabling visual diagnosis of the region from multiple angles.

In this case, there are various images to be displayed in addition to the six images mentioned above, but there is also a limit to the number of installed monitors, and the observation ability of the I2 observer (who can watch many screens at once) is limited. ), the number of images is generally smaller than the number of images to be displayed. Therefore, X
A display switching device is provided between the FiTVla image system and the image display system, so that necessary images are displayed on a small number of monitors as required by the operation of the surgeon.

In addition, various images such as the above-mentioned two fluoroscopic images, the before-and-after image before contrast agent injection and the after-injection image, the before-and-after image before treatment and the after treatment image, etc., each contain information that appears. Because they are different, each one has different brightness and contrast. Therefore, in addition to display switching operations, the surgeon generally adjusts the brightness and contrast of the image displayed on each monitor for each monitor with different specifications.
(Generally, all images have the same brightness level and contrast level.) to allow doctors and others to easily perform image diagnosis.

For this reason, when the number of displayed images increases from, for example, two images to four images or even six images, the above-mentioned brightness and contrast level adjustment for each monitor becomes complicated and troublesome. In this case, the monitor installed in the examination room is installed at a high place that is difficult to adjust in order to facilitate observation. The reason for this is that it is complicated and cumbersome, and it may even be practically impossible, resulting in a situation where multiple images with inadequate brightness and contrast levels have to be observed. This makes it undesirable as an image diagnostic device.

(Problems to be Solved by the Invention) As described above, in the conventional technology, the display of multiple images from the Xl1TV image system is switched on the multiple monitors of the image display system, and the brightness and contrast of each are changed. Since the levels of the images are adjusted individually, the operations are complicated and troublesome, and there is a problem in that diagnosis cannot be performed through appropriate image comparison.

Therefore, an object of the present invention is to easily compare and observe multiple images from the Xl1lTV camera system. An object of the present invention is to provide an i1 diagnostic device.

[Structure of the Invention (Means for Solving Problems) The present invention is characterized by taking the following measures in order to solve the above problems and achieve the object. That is, the XI2 diagnostic device according to the present invention can detect multiple X1QTVs.
an image collection system that collects images of different objects from the imaging system;
a display switching means for switching and controlling images to be displayed from the image collection system; an image display system for displaying a plurality of images switched and selected by the display switching means on each of a plurality of monitors; and the image collection system. The present invention is characterized by comprising one correction means that is inserted between the display switching means and adjusts the blastness and contrast of each of the different subject images from the plurality of XJITVil image systems to the same level. shall be.

(Function) According to such a configuration, since the blastness and contrast of the plurality of images switched and selected by the display switching means are adjusted to the same level by one correction means, the image display system Homemade brightness displayed for each.

The contrast is at the same level, and diagnosis can be made by comparing the image edges appropriately without having to make any adjustments.

(Embodiment) An embodiment of the X11 diagnostic device according to the present invention will be described below using a configuration example shown in FIG. 1, which includes a cardiovascular pipeline system and a digital fluorography (DF) device.

In Fig. 1, there is an X-ray TVIIil imaging system as equipment installed in the "Inspection fER".
The G image system includes an X-ray source 1a on a U-arm (not shown), and 1.
1.2a, a first X-ray fluoroscopy device consisting of an optical system 3a, a TV camera 4a, and a camera control unit (CCU) 5a;
．． 2b, an optical system 3b, a TV camera 4b, and a second X-ray fluoroscopy device consisting of a camera control unit (CCtJ) 5b. This first XSa fluoroscope and the second
The X-ray fluoroscopy device is arranged around a bed for placing a patient (not shown) so as to face a desired diagnostic region of the patient P. In addition, the equipment installed in the examination room ER is
High pressure generators 6a, 6 that drive the radiation sources 1a, lb, respectively
In addition, in order to display images in two directions, there are monitors 8 in the examination room (fluoroscopic image monitors 8a11, 8a12 and DF monitor 8 bll,
8 b12).

On the other hand, the equipment installed in the control room OR is the DFF
9, a recording device 10a such as a VTR or VDR;

10b (sometimes equipped with a cine camera and a film recording device with a high-speed film changer installed in the arm of the examination room), which are connected to the first X-ray pass 81 device and the second X-ray Video signal correction unit (VCU) 11, which will be described later, processes images from the fluoroscopy device and reproduces stored images. Display seedling container 1
In order to display images from two directions via
c1°8C2).

Here, the details of the video signal correction unit (VCU) 11 are shown in FIG. That is, as shown in FIG. 2, a gain correction circuit 11a (11a
t, 11a2. . . 11a6) and a gamma correction circuit 11b (11b1.
b6) and a camera control unit (CCU).
) 5a, 5b, DFF position 9, and recording device 10a.

Video signals from 10b and 10b are respectively input, and brightness level constant control by gain correction and contrast level constant control by gamma correction are performed for each video input, and video outputs are performed respectively. Here, the brightness level setting value and the contrast level setting value are set all at once using the console of the DFF station 9 or a console (not shown).

Here, the gain correction circuit 11a, as shown in FIG.
It has an amplifier AmD and a gain control circuit GCC, and is configured to automatically correct the gain so as to keep the maximum level of the video signal constant with respect to the brightness level setting input.

The gamma correction circuit 11b is connected to the amplifier A as shown in FIG.
mp, gamma initial fiffGI, and gamma selection circuit G
S, the gamma curve corresponding to the contrast level setting input is set to the gamma initial value GI and the gamma selection circuit GS.
It is called from , corrects the video input, and outputs the video.

Note that various video signal output v devices, including linear ones, have their own gamma values, so those gamma curves are stored in the gamma initial value Gl in advance, and the gamma selection circuit GS The gamma curve is set to the gamma initial value G according to the input contrast level setting input.
It is called from I and acts on amplifier Arrl to obtain video output.

The display switching unit 12 switches the plurality of images received from the VCUll to a desired one, and displays the monitors 8 in the operation room (fluoroscopic image monitors 8a21, 8a22 and DF image opening monitors 8b21, . . .
8b22, recording and reproducing monitors 8c1, 8c2) and inspection room monitors 8 (fluoroscopic image monitors 8a11, 8a12 and DF image monitors F3 bll and 8 b12) to display images. .

In addition, a flickerless device (not shown) is installed in front of the monitor 8 to remove flicker during cine photography, and a frame memory device is installed in the front of the monitor 8 to display the final image during fluoroscopy. You can also do that.

According to this embodiment configured as described above, the following effects are achieved. In other words, two fluoroscopic images selected by the display switching device 12, front and back images of the image before and after injection of the titanium agent, front and back images of the image before and after treatment, etc. The information that appears in each type of image is different, each has different brightness and contrast, and the specifications of each monitor 8 may also differ, but the brightness level and contrast level can be collectively determined by one VCUII. Since a constant value can be set immediately by operation, multiple images with appropriate brightness and contrast levels can be observed on the examination room monitor and operation room monitor 8, allowing doctors etc. to easily view multiple images. It is useful to be able to compare.

In addition, since diagnosis is urgent in this type of cardiovascular diagnostic system, it is important for doctors and surgeons to be able to immediately set the desired brightness and contrast levels for multiple images to be compared at once. It is extremely useful in making accurate diagnoses, including allowing you to focus on operations.

The present invention is not limited to the embodiments described above, but
Various configurations of the line imaging system, elements of the image display system, etc. can be applied and modified without departing from the spirit of the present invention.

[Effects of the Invention] As described above, the present invention includes an image collection system that collects different subject images from a plurality of X-ray TVI image systems, and a display switch that switches between images to be displayed from this image collection system. means, a double edge display system for displaying a plurality of images switched and selected by the display switching means on each of a plurality of monitors, and a plurality of X1i1TVii interposed between the image collection system and the display switching means; By being equipped with one correction means that adjusts the blastness and contrast of different subject images from the imaging system to the same level, the plurality of images selected by the display switching means can have their blastness adjusted to the same level. Since the contrast is adjusted to the same level by the correction means, in the image display system, the brightness and contrast of the images displayed on each monitor are at the same level, eliminating the need for adjustment and allowing for appropriate image comparison. Therefore, it is possible to provide an X-ray diagnostic apparatus that allows easy comparison and observation of a plurality of images from the X-ray Tv imaging system.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of an embodiment of an X-ray diagnostic apparatus according to the present invention, FIG. 2 is a block diagram showing details of a video signal correction unit (VCLJ) in the embodiment, and FIG. FIG. 4 is a diagram showing an example of a specific circuit of the gain correction circuit in FIG. 2, and FIG. 4 is a diagram showing an example of a specific circuit of the gamma correction circuit in FIG. 1a, 1b ・X-ray source, 2a, 2b
-2 bow, ■, , 3a, 3b--optical system,
4a, 4b-TV camera, 5a, 5b...Camera control unit (CCLJ), 6a, 6b...High pressure generator, 7a. 7b...X picture word tIl device, 8...Monitor, 9...
・Digital fluorography device, 10a, 10b・
...Recording device, 11...Video signal correction unit, 1
2...Display switching device. Applicant's agent Patent attorney Takehiko Suzue Figure 3 Figure 4

Claims (1)

[Claims] An image collection system that collects different subject images from a plurality of X-ray TV imaging systems, a display switching means that switches and controls images to be displayed from the image collection system, and a plurality of images that are switched and selected by the display switching means. an image display system that displays images on each of a plurality of monitors; and an image display system that is interposed between the image acquisition system and the display switching means and displays different images of the subject from the plurality of X-ray TV imaging systems, respectively. 1. An X-ray diagnostic apparatus comprising: one correction means for adjusting the blastness and contrast of the images to the same level.