JPH0399628A - Image display apparatus - Google Patents

Abstract

PURPOSE:To enhance diagnostic efficiency by forming the actual dimension image of a region to be diagnosed on the basis of the size of a display picture and the pixel size thereof. CONSTITUTION:An imaging part 1 is constituted of an X-ray CT apparatus and an X-ray imaging mechanism and the image data (X-ray absorption data) obtained from a region to be diagnosed is sent to an image reconstitution part 2 to perform the reconstitution of an image. The image thus formed is stored in an image memory part 3 constituted of a magnetic disc. An image control part 6 is constituted of a CPU and the image stored in the image memory part 3 is read on the basis of the control of the image control part 6 to be sent to an actual dimension image forming part 4. The actual dimension image forming part 4 is constituted of an exclusive microprocessor and converts the reconstituted image to an actual dimension image. At this time, since the data of the inch size and pixel size of a display 5 are preliminarily inputted to the actual dimension image forming part 4, the reconstituted image is converted to the actual dimension image on the basis of those data to be displayed on the display 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an image display device that creates and displays an actual size image of a region to be diagnosed.

(Prior Art) Medical image display devices such as X-ray CT devices and MRI devices use
The image is reconstructed by a computer based on the image data of the linear absorption coefficient or the MR multiplied signal, and the reconstructed image is displayed on a display to serve as diagnostic information.

For example, FIG. 5 shows the configuration of an X-ray CT apparatus. 12. The bed section 11 is the subject 13
A top plate 16 that directly supports and is movable in the horizontal direction The imaging mechanism includes a dome 18 that guides the subject 13 moved in the dome 18, and the X
CT imaging is started by emitting X-rays while rotating the ray tube 14 and detector 15 integrally.

The X-ray absorption data collected by the detector 15 is sent to the image reconstruction section 2, where the image is reconstructed by a computer and displayed on a display 5 such as a CRT. Here, in order to make the image displayed on the display 5 easier to view as diagnostic information, it is often displayed enlarged compared to the actual size of the region to be diagnosed. In other words, as shown in Fig. 6(a), the actual size of the part to be diagnosed is A.
If this is the case, a larger dimension B (B>A) is often displayed on the display as shown in FIG. 6(b). Or conversely, it may be displayed reduced to a size smaller than the actual size.

(Problem to be Solved by the Invention) However, in conventional image display devices, the image of the diagnosis target region displayed on the display is often displayed in a size different from the actual size, so it is not visually and sensually practical. There is a problem in that it becomes difficult to grasp the dimensions and diagnostic efficiency decreases. For example, when displaying the lungs a and the head as different parts on the same screen as shown in Figure 7, both parts are displayed at the same time on the screen regardless of their actual dimensions, so it seems as if both parts The actual dimensions of the two will be expressed as if they were the same size.

Therefore, in order to diagnose these displayed images, judgments must be made visually and sensually. Furthermore, if actual dimensions are required, the dimensions must be measured by performing measurement image processing, which is complicated to operate.

The present invention has been made in response to the above-mentioned problems.
It is an object of the present invention to provide an image display device that displays an actual size image of a region to be diagnosed on a display as necessary.

[Configuration of the Invention (Means for Solving the Problem) In order to achieve the above object, the present invention performs image reconstruction based on image data collected from a diagnostic target region of a subject according to its symptoms. An image display device for displaying images on a display, characterized by comprising an actual size image creation unit that creates an actual size image of a diagnosis target site based on the size of the display screen and the pixel size of the display screen. .

(Function) Since the actual size image creation unit creates an actual size image of the diagnosis target area based on the display screen size and the pixel size of the display screen, the actual size image can be created as needed regardless of the display size. Images can be displayed. Therefore, the actual size can be grasped visually and sensually, and diagnostic efficiency can be improved.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the image display device of the present invention, in which numeral 1 denotes an imaging section, for example, an X-ray C as shown in FIG.
It is composed of an X-ray imaging mechanism of a T device, and image data (X-ray absorption data) obtained from a region to be diagnosed is sent to an image reconstruction unit 2 where image reconstruction and composition is performed. The image created in this manner is stored and archived in an image storage unit 3 composed of a magnetic disk or the like.

Reference numeral 6 denotes an image control section which is composed of a CPU (Central Processing Unit) and is in charge of overall control operations.

The images stored in the image storage section 3 are read out under the control of the image control section 6 and sent to the actual size image creation section 4. The actual size image creation unit 4 is constituted by a dedicated microprocessor, etc., and has a function of converting a reconstructed image into an actual size image. This actual size image creation unit 4 targets a display 5 for image display, which will be described later, and uses the display screen size of the display 5, for example, the inch size L1 shown in FIG. 2, and the pixel size of the display screen, for example, as shown in FIG. Each pixel size P 1 * P 2 * P3.
Convert the reconstructed image to an actual size image based on the size of... For example, if the pixel size of the display is the same but the inch size is different, the ratio between the inch size and the pixel size will be different. calculates the ratio and stores it as data.

Therefore, based on this data, the actual size image creation section 4 automatically creates an actual size image regardless of the display size by enlarging or reducing the reconstructed image.

The actual size image created in this way is displayed on the display 5.
is displayed and used for diagnosis.

Next, the operation of this embodiment will be explained.

Image reconstruction unit 2 based on image data collected by imaging unit 1
The image created is stored in the image storage section 3, and then taken out to the actual size image creation section 4 as needed.

The actual size image creation unit 4 is inputted with data on the inch size and pixel size of the display 5 to be used in advance, so it converts the reconstructed image into an actual size image based on these data and displays it on the display 5. As a result, the part to be diagnosed whose actual size is A as shown in Fig. 4(a) is
As shown in Figure (b), the actual size image is displayed with the same size A.

In this way, according to this embodiment, the part to be diagnosed can be displayed as an actual size image if necessary, so when diagnosing the displayed image, the actual size can be grasped visually and intuitively. Diagnostic efficiency can be improved. Moreover, the actual size image is automatically formed by the function of the actual size image creation section. 2... Image reconstruction section 4... Actual size image creation section 5... Display 6... Image control Department (CPU).

Therefore, it is possible to eliminate the need for image processing for measurement, which is complicated to operate as in the past.

Note that the actual size image can be displayed only when necessary, and when it is not particularly necessary, the reconstructed image can be displayed as it is as in the conventional case.

Although this embodiment has been described using an X-ray CT apparatus as an example, the present invention is not limited to this, and similar effects can be obtained even when applied to other image display apparatuses such as an MRI apparatus.

[Effects of the Invention] As described above, according to the present invention, the target region for diagnosis is displayed as an actual size image as necessary, so that the target region can be grasped visually and sensually. Diagnostic efficiency can be improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the image display device of the present invention, FIGS. 2 and 3 are explanatory diagrams of the operating principle of the present invention, and FIGS. 4(a) and (b) are A display example of the obtained image is shown in FIG. 5, which is a block diagram of a conventional device, and FIGS. 6 and 7 are display examples of a conventional device.

Claims (1)

[Claims] In an image display device that reconstructs images based on image data collected from the diagnosis target area of a subject according to the symptoms and displays it on a display, diagnosis is performed based on the size of the display screen and the pixel size of the display screen. An image display device comprising an actual size image creation section that creates an actual size image of a target region.