JPH03234243A - Display method for image in ct device - Google Patents

Abstract

PURPOSE:To display the position relation of the present display image on reconstitution images of one group by displaying a scale for showing the whole quantity of the reconstitution images and a cursor for showing the order of the images on a screen of a display device, and moving successively the cursor on the scale, whenever the display image is switched. CONSTITUTION:When tomography image data is read out of a storage device 1, and its tomography image 15 is displayed on a screen of a display device, a scale 16 for showing the whole quantity of the tomography images of one group of a patient selected by a pointer 12 is displayed on a part of the same screen of the display device 5, based on tomography image information for constituting a slice directory 13, and also, a cursor 17 for showing the order of the tomography image 15 of the slice surface selected and displayed by the present pointer therein is displayed. In such a state, whenever the tomography image 15 displayed on the screen of the display device 5 is switched, the cursor 17 moves successively on the scale 16. In such a way, which exists the display order of the tomography image 15 presently being displayed among the tomography images of a certain group of patients can be known clearly at a glance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image display method in a CT apparatus that measures and displays images of a diagnostic region of a subject, and particularly relates to an image display method for measuring and displaying images of a diagnostic region of a subject, and in particular, a method for displaying images from among a group of reconstructed images to be displayed. The present invention relates to an image display method that can also display the positional relationship of currently displayed images.

[Conventional technology]

Generally, when viewing a tomographic image (reconstructed image) of an affected area of a subject using a CT device, multiple tomographic images obtained by successively moving the measurement position are compared and observed to determine changes due to the measurement position of the affected area. Look at the condition.

In order to display and observe tomographic images stored in a storage device in a conventional CT device, first, directory information of stored images is displayed on the screen of the display device, and a specific image is selected and displayed based on this directory information. However, the images before and after the displayed image were switched, for example, by page movement, for comparative observation. At this time, in order to switch between displayed images, conventional methods display the previous and subsequent images separately based on image information such as the patient identification number and slice number that are displayed at the same time as the image. .

[Problem to be solved by the invention]

However, in such conventional image display.

To switch the currently displayed image among a group of tomographic images to be displayed, the previous and succeeding images are distinguished and displayed based on image information such as the patient identification number and slice number that are displayed at the same time as the image. As a result, each image had to be switched while always keeping in mind the current display order of the group of images stored in the storage device. Therefore, since the user is always thinking about which side of the whole the currently displayed image is ranked, it is sometimes difficult to concentrate on observing the desired image. Furthermore, since the order of the currently displayed images is not clear, the user may sometimes make a mistake in selecting the next image to perform WA analysis. For these reasons, the efficiency of diagnosis performed by observing tomographic images measured with a CT apparatus has been reduced.

Therefore, the present invention solves these problems and provides an image display method in a CT apparatus that can also display the positional relationship of the currently displayed image among a group of reconstructed images to be displayed. The purpose is to

[Means to solve the problem]

In order to achieve the above object, the method for displaying images in a CT apparatus according to the present invention includes a storage device that stores image data collected about a diagnostic region of a subject, and image data read out from the storage device and image reconstruction calculation. In the CT apparatus, the CT apparatus includes a computing device that performs the following operations, an input unit that inputs various operation commands, a display device that displays the reconstructed image, and a central processing unit that controls each of the components, the display device when displaying the reconstructed image on the screen.

On that screen, a scale representing the total amount of the group of reconstructed images to be displayed from now on is displayed, and a cursor representing the rank of the currently displayed image among the group of reconstructed images is displayed, and the displayed image is displayed. The cursor is sequentially moved on the scale each time it is switched.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a schematic configuration of a CT apparatus used to implement the image display method according to the present invention. This CT
The device measures and displays images of the diagnostic site of the subject, and as shown in the figure, includes a storage device 1 and a calculation device 2.
and a keyboard 3 and a trackball 4 and 1 display device 5
and a central processing unit (hereinafter abbreviated as rCPUJ) 6.

The storage device 1 stores image data collected about a diagnostic region of a subject by a measuring device (not shown), and is composed of, for example, a magnetic disk. In addition to this storage device 1, a floppy disk 7 is also provided. The arithmetic device 2 reads out image data from the storage device 1 or the floppy disk muff and performs image reconstruction operations, and is connected to a memory 8 in which arithmetic control data and the like are stored. The keyboard 3 and trackball 4 serve as input means for inputting various operation commands for image processing to the arithmetic unit 2, CPU 6, and the like. The display device 5 displays images reconstructed by the above-described image processing, and is made of, for example, a CRT. Furthermore, CPU6
is for controlling the operation of each of the above-mentioned components, and is connected to a memory 9 in which control data and the like are stored.

Incidentally, in FIG. 1, reference numeral 10 indicates a path line for transferring data between each of the above-mentioned constituent elements.

Next, a method of displaying a reconstructed image (tomographic image) using a CT apparatus having such a configuration will be described with reference to FIG. 2. First, on the screen of the display device 5 shown in FIG. 1, a patient directory 11 (see FIG. 2) in which patient information regarding reconstructed images stored on the storage device or in the floppy disk 7 is arranged is displayed. Then, the user views this patient directory 11 and selects a patient whose image is to be displayed from now on. At this time, on the patient directory 11,
Place the pointer 12 on the appropriate patient identification number. Next, on the screen of the display device 5.

A slice directory 13 in which tomographic image information of a patient selected by the pointer 12 with respect to the patient directory 11 among the reconstructed images stored in the storage device 1 or the floppy disk 7 is displayed is displayed. Then, the user views this slice directory 13 and selects the slice surface on which the image is to be displayed. At this time, the pointer 14 is placed on the corresponding slice number on the slice directory 13.

Then, the tomographic image data of the slice plane selected by the instruction of the pointer 14 is read out from the storage device 1 or the floppy disk 7, and the tomographic image 15 is displayed on the screen of the display device 5. At this time, along with the selected and displayed tomographic image 5, a part of the same screen of the display device 5 displays the patient selected by the pointer 12 based on the tomographic image information constituting the slice directory 13. A scale 16 representing the total amount of a group of tomographic images is displayed, and
A cursor 17 indicating the order of the tomographic image 15 of the slice plane currently selected and displayed with the pointer 14 is displayed.

The cursor 17 sequentially moves on the scale 16 each time the tomographic image 15 displayed on the screen of the display device 5 is switched. As a result, the currently displayed tomographic image 15
It can be seen at a glance which display order is placed among the tomographic images of a group of patients.

Below, such an operation will be explained in more detail.

First, inside the CT apparatus, although not shown, an information table (hereinafter referred to as "display order table") in which the order of images to be displayed is set is provided. And keyboard 3
When you press the specified function key above (hereinafter referred to as rF1F1 key).

Storage device 1 according to the order shown in the display order table above.
The image data is read from the , and the images are sequentially displayed. Here, in the display order table, the order etc. measured as initial values are set in the display image selection process. Furthermore, this display order table has a pointer indicating the currently displayed image. Therefore, the scale 16 and cursor 17 shown in FIG. 2 are displayed based on the above display order table and pointer information. and,
When the Fl key on the keyboard 3 is pressed, the pointer on the display order table changes accordingly, the currently displayed image changes, and the cursor 17 moves one after another on the scale 16. go.

Next, when another predetermined function key (hereinafter referred to as "rF2 key") on the keyboard 3 is pressed, the information in the display order table is changed to a specific one of the images of all patients in the storage device 1, for example. The information is reset to the information from the first image of the patient.

At this time, the scale 16 and cursor 17 are similarly redisplayed according to the reset display order table. When the Fl key is pressed in this state, the images are updated and displayed according to the reset display order table. In this way, other function keys F on keyboard 3
By providing 2 with a function of resetting the image display order table, the switching order of images to be displayed can be freely changed.

Next, by pressing yet another predetermined function key (F3 key) on the keyboard 3, the cursor 17 displayed on a part of the screen of the display device 5 can be arbitrarily moved on the scale 16. Accordingly, the pointer on the display order table can be changed so that the next image to be displayed on the screen is the image indicated by the pointer.

〔Effect of the invention〕

After the present invention is configured as described above, when image data is read out from the storage device [1 and reconstructed image 15 is displayed on the screen of the display device 5 in the CT apparatus, a group of images to be displayed from now on is displayed on the screen of the display device 5. A scale 16 representing the total amount of the reconstructed images 15 is displayed, and a scale 16 representing the total amount of the reconstructed images 1 of the group
It is possible to display a cursor F representing the rank of the currently displayed image among the 5 images, and to sequentially move the cursor 17 on the scale 16 each time the displayed image is switched. As a result, it is possible to display the positional relationship of the currently displayed image among a group of images, and the display order of the current image among the whole can be seen at a glance.

Therefore, the operator can concentrate on observing the desired image without having to think about which side of the whole the currently displayed image is ranked as in the conventional case. Furthermore, since the order of the currently displayed images is clear, the user will not make a mistake in selecting the next image to be viewed. For these reasons, it is possible to improve the efficiency of diagnosis performed by observing tomographic images measured by a CT device.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a schematic configuration of a CT device used to implement the image display method according to the present invention, and Fig. 2 shows a method of displaying a reconstructed image (tomographic image) using the above-mentioned CT device. It is an explanatory diagram for explanation. DESCRIPTION OF SYMBOLS 1... Storage device, 2... Arithmetic device, 3... Keyboard, 4... Trackball, 5... Display device, 6...
...CPU, 10...Pass line, 11...Patient directory, 12.14...Pointer, 13...Slice directory, 15...Tomographic image, 16...Scale, 17...Ka Kaya! solid

Claims (1)

[Claims] 1. A storage device that stores image data collected about the diagnostic site of the subject, a calculation device that reads the image data from the storage device and performs image reconstruction calculations, an input means that inputs various operation commands, and the above-mentioned In a CT apparatus that has a display device that displays a reconstructed image and a central processing unit that controls each of the above-mentioned components, when displaying the reconstructed image on the screen of the display device, the display device that will be displayed on the screen In addition to displaying a scale representing the total amount of the group of reconstructed images to be reconstructed, a cursor representing the rank of the currently displayed image among the group of reconstructed images is displayed, and the cursor is moved each time the displayed image is switched. A method for displaying images in a CT apparatus, characterized in that images are sequentially moved on a scale.