JPH0370547A - Ct photographing apparatus - Google Patents

Abstract

PURPOSE:To make it possible to perform a reset of the preceding photographing condition by a simple procedure by storing an input photographing condition of an examined body in advance, taking out the photographing condition from a storing means when the same photographing condition as a part of the above described photographing condition is input and starting a scanning based on this condition. CONSTITUTION:For a new patient, after a photographing condition is at first set, these informations are stored in a storing apparatus 4 through an input apparatus 1 under a control of a host computer 3 and are set in a scan control apparatus 5. Then, the other day when the same patient is to be scanned under the same condition as that of the preceding one, under a control of the host computer, the same conditions as a part of the photographing conditions, e.g. a registration of the patient and a photographed position are input or an image of the same patient is displayed on a display apparatus 2 and an arbitrary image is selected and then, the photographing condition is taken out of the storing apparatus and is preset in a scan control apparatus. Then, a procedure for starting of scanning is performed and scanning is started under the same photographing condition. Therefore, it is unnecessary for an operator to check and input again the preceding photographing condition on each needed time and it is possible to reset simply the photographing condition.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a CT imaging apparatus such as an X-ray CT apparatus or an MRI apparatus, and particularly relates to an improvement in resetting patient imaging conditions.

(Prior art) CT imaging devices such as X-ray CT devices and MRI devices perform calculations by computer based on image data such as X-ray absorption coefficients or MRI signals collected from the diagnosis target region of the subject according to the symptoms. It performs processing to reconstruct images.
When photographing, various photographing conditions are set.

For example, FIGS. 5 and 6 show the configuration of an X-ray CT apparatus, and the X-ray CT apparatus has a bed section 10 that supports a subject 13.
and a pedestal section 12 that houses an X-ray imaging mechanism consisting of an X-ray tube 14 and a detector 15. The bed section 10 includes a top plate 16 that directly supports the subject 13 and is movable in the horizontal direction X. The pedestal section 12 includes a height adjustment section 17 for adjusting the height position of the top plate 16 in the vertical direction Y, and a dome 18 for guiding the subject 13 moved in the horizontal direction X by the top plate 16. As shown in FIG. 5, the X-ray tube 14 and detector 15 constituting the imaging mechanism are rotated integrally around the surface (slice surface) 1 to be photographed of the subject 13 guided into the dome 18. X-ray exposure is performed and CT imaging is started. Part of the subject 13 to be imaged (slice surface)
is determined in advance, and it is desirable to perform imaging with the center position of this slice plane aligned with the rotational center position of the imaging mechanism.

In this way, when imaging a subject with an X@CT device, the slice thickness of the slice plane, the number of slices, and the plane to be imaged (actual, sagittal) are important.

Settings of imaging conditions including coronal, etc. can be arbitrarily selected depending on the purpose of diagnosis. The image data photographed in this manner is stored in an image memory or recorded on film by an imager, and then read out and used for diagnosis as necessary.

If you want to image the same patient at a later date under the same imaging conditions as the previous one, refer to the image memory directory that stores the image data obtained from the previous image, or refer to the imager film and perform the previous image. You need to check the conditions and set them again.

Figure 4 shows a conventional device for this purpose.
By operating , the directory showing the patient list in the image memory 8 is referred to, or by referring to the imager film 9, the previous imaging conditions are read out and displayed via the host computer (central processing unit) 3. Display on device 2. Next, in order to re-input the imaging conditions from the input device 1 under the control of the host computer 3 and reset the imaging conditions, they are stored in the storage device 4 and set in the scan control device 5. As a result, the scan control device 5 performs a control operation for the imaging device 6 to start scanning under the same imaging conditions as the previous time.

(Problem to be Solved by the Invention) However, in conventional X-ray imaging apparatuses, when scanning the same patient at a later date under the same imaging conditions as the previous one, the previous imaging conditions are retrieved from the image memory or imager film. It is necessary to operate the input device each time to display the image on the display device and check it, and if it is not in the image memory, it is necessary to refer to the imager film and check it, and then to re-enter the shooting conditions. There is a problem that the operation becomes complicated.

The present invention has been made in response to the above-mentioned problems.
It is an object of the present invention to provide a CT imaging apparatus that is easy to operate and allows resetting of previous imaging conditions.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention performs image reconstruction based on image data collected from a diagnosis target region of a subject according to its symptoms. The CT imaging apparatus includes a storage means for storing input imaging conditions of a subject in advance, and when the same conditions as a part of the imaging conditions are input, the imaging conditions are retrieved from the storage means and displayed on a display means. The present invention is characterized in that it also includes central control means that presets the scan control means, and scan control means that causes the photographing means to start scanning based on the preset photographing conditions.

Further, when a request is made to the central control means to display an image of the same subject photographed last time, the image is retrieved from the storage means and displayed on the display means, and at the same time, the scan control means is given the photographing conditions corresponding to the displayed image. It is designed to have a function to preset.

(Function) When scanning the same patient at a later date using the same imaging conditions as the previous one, if the imaging conditions are stored in advance and the same conditions as some of the imaging conditions are entered, such as patient registration and the area to be imaged, Alternatively, when images of the same patient are displayed and an arbitrary image is selected, the imaging conditions are retrieved from the storage means and preset in the scan control means. Subsequently, by performing a scan start operation, a scan is started under the same imaging conditions. Therefore, it is no longer necessary for the operator to check and re-enter the previous imaging conditions each time it is necessary, so that the imaging conditions can be easily reset.

(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 CT imaging apparatus of the present invention, in which 1 is an input device consisting of a keyboard, etc., 2 is a CRT
3 is a host computer consisting of a central processing unit such as a CPU, 4 is a storage device consisting of various memories, 5 is a scan control device, and 6 is a C
This is a photographing device consisting of a T photographing mechanism and the like.

For patients visiting for the first time, the first step is to fill out appropriate imaging conditions, such as the patient's name.

After the imaging site, slice thickness, number of slices, imaging surface, etc. are set, they are input by the operator through the manual device 1. These pieces of information are stored in the storage device 4 and set in the scan control device 5 under the control of the host computer 3. The contents of the photographing conditions can be arbitrarily set via the input device 1. By operating a scan start switch on the keyboard that is the input device 1, the scan control device 5 causes the photographing device to start scanning and photographing is performed. When the scan is completed, the image data photographed based on the photographing conditions is stored in the storage device 4 in correspondence with the photographing conditions as shown in FIG. Similar scans are then performed on other patients.

Next, if you want to scan the same patient at a later date under the same imaging conditions as the previous time, you can select one of the following two input methods. One method is to input from the input device 1 the same conditions as some of the previous imaging conditions, such as the patient's name and the region to be imaged. As a result, the host computer 3 retrieves the previous photographing conditions from the storage device 4 and outputs them to the display device 2, as well as presetting them in the scan control device 5. Another method is to retrieve the previous patient's image from the storage device 4 via the input device 1 and display it on the display device 2. By selecting an arbitrary image from the displayed images, this image has shooting conditions 7 stored in it as shown in FIG. 3, so the displayed shooting conditions can be scanned and controlled via the host computer 3. Preset to device 5.

After the previous imaging conditions are preset in the scan control device 5 in this way, scanning is automatically started by operating the scan start switch.

Next, the operation of this embodiment will be explained.

If a patient is scanned under certain imaging conditions and the imaging conditions at that time are stored in advance, and you want to scan the same patient at a later date under the same imaging conditions as last time, enter the patient's name via the input device 1 as described above. And, the previous imaging conditions are preset in the scan control device 5 via the host computer 3, either by inputting the imaging conditions manually or by extracting and displaying the previous patient's image on the output device 2. Next, by operating a scan start switch on the keyboard of the input device 1, scanning is automatically started based on the previous imaging conditions.

According to this embodiment, when performing a scan under the same photographing conditions as the previous one, it is possible to check the previous photographing conditions from the image memory or from the imager film by operating the manual device each time, as in the past. Since there is no need for complicated operations such as re-entering the information, the shooting conditions can be easily reset.

Note that the image obtained by scanning under the same photographing conditions as the previous one is stored in the storage device again, so when the previous photographing conditions are reset next time, the latest image will be displayed. Furthermore, since the photographed images are sequentially stored in the storage device, it is possible to retrieve the photographing conditions for the images photographed at any time. Furthermore, various types of information such as position information of the bed and the like can be stored as the photographing conditions.

[Effects of the Invention] As is clear from the above description, according to the present invention, if you want to scan at a later date under the same imaging conditions as the previous one, you can easily reset the previous imaging conditions without the need for complicated operations. can.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the CT imaging device of the present invention, FIGS. 2 and 3 are data formats and display examples explaining the operation of the device of this embodiment, and FIG. 4 is the configuration of a conventional device. FIG. 5 and FIG. 6 are a side view and a perspective view showing the configuration of the X-ray CT apparatus. DESCRIPTION OF SYMBOLS 1... Input device, 2... Display device, 3... Host computer (central processing unit), 4... Storage device, 5... Scan control device, 6... Photographing device. Fig. Fig. Fig. 12 Da 8 village map

Claims (2)

[Claims] (1) In a CT imaging apparatus that performs image reconstruction based on image data collected from a diagnosis target region of a subject according to its symptoms, a storage means for storing input imaging conditions of the subject in advance; a central control means that retrieves the photographing conditions from the storage means when the same conditions as a part of the photographing conditions are inputted, displays them on the display means, and presets them in the scan control means; A CT imaging apparatus comprising: a scan control means for starting a scan. (2) When the central control means receives a request to display an image of the same subject photographed last time, the central control means retrieves the image from the storage means and displays it on the display means, and also presets the scan control means with photographing conditions corresponding to the displayed image. The CT imaging apparatus according to claim 1.