JPH10155778A - X-ray image diagnostic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform a quantitative administration of an exposure X-ray amount for a subject by a method wherein a corresponding relationship between an input X-ray condition and an exposure X-ray amount by a generated X-ray, is stored, and the X-ray condition is converted into an exposure X-ray amount by accessing to the memory means, and the X-ray exposure amount is indicated. SOLUTION: When an X-ray condition is input by operating a keyboard 11 which is connected to a CPU 13 and a mouse 12, a command is sent to an X-ray control device 14, and an X-ray tube 15 is controlled conforming to the condition. In the meantime, in a memory 16 which is connected to the CPU 13, a corresponding relationship between the X-ray condition and an exposure X-ray amount by an X-ray which is generated from the X-ray tube under that condition, is stored. Then, when the X-ray condition is input by the keyboard 11 and the mouse 12, an exposure X-ray amount corresponding with the X-ray condition is read from the memory 16, and an exposure X-ray amount which is converted by corresponding with the input X-ray condition, is indicated by a display device 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of irradiating a human body with X-rays to obtain image information useful for making a medical diagnosis.
The present invention relates to a line image diagnostic apparatus.

[0002]

2. Description of the Related Art Conventionally, an X-ray diagnostic imaging apparatus has been
A radiographic apparatus, an X-ray fluoroscopic apparatus, an X-ray CT apparatus, and the like are used. All of these obtain image information useful for medical diagnosis of the human body. An X-ray photographing apparatus is to project an X-ray transmission image on a film or the like, and an X-ray fluoroscopy apparatus obtains a video signal of an X-ray transmission image using an image intensifier and a TV camera. Is displayed as an X-ray fluoroscopic image on a TV monitor device or photographed on a film. X-ray C
The T device reconstructs a tomographic image by collecting X-ray transmission data and performing computer processing.

[0003]

However, although the X-ray diagnostic imaging apparatus can provide image information useful for medical diagnosis, on the other hand, it causes a problem of X-ray exposure to the human body, and furthermore, the conventional X-ray imaging apparatus has a problem. The diagnostic apparatus has a problem that it is not easy to manage the X-ray exposure.

In particular, in recent years, the performance of X-ray tubes and X-ray generators has become higher due to technological advances, and the number of devices capable of irradiating a high X-ray for a long time has been increasing. On the other hand, it has been pointed out that it is necessary to compare and consider the diagnostic value expected from image information and the amount of X-ray exposure received to obtain the image information. Even under the same X-ray conditions, the exposure X-ray dose differs depending on each device. Therefore, unless information on the exposure X-ray dose is presented for each device, it is impossible to quantitatively manage the exposure X-ray dose of the subject. Nevertheless, none of the conventional X-ray image diagnostic apparatuses even has a function of displaying the exposed X-ray dose quantitatively.

In view of the above, it is an object of the present invention to provide an X-ray diagnostic imaging apparatus improved so that quantitative control of an exposure X-ray to a subject can be easily performed.

[0006]

In order to achieve the above object, in an X-ray diagnostic imaging apparatus according to the present invention, a means for inputting an X-ray condition, and an X-ray detecting device for outputting an X-ray in accordance with the input X-ray condition are provided. Means for generating X-rays generated, storage means for storing a correspondence relationship between X-ray conditions and X-ray exposure to X-rays generated from the X-ray generation means, and X-ray conditions being exposed by accessing the storage means. It is characterized in that a conversion means for converting into a dose and a means for displaying the converted X-ray exposure amount are provided.

[0007] When an X-ray condition is input, it is converted into an exposure X-ray corresponding thereto, and the exposure X-ray is displayed. Therefore, it is possible to know the X-ray exposure by looking at the display and to review or correct the X-ray conditions.

[0008]

Next, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, a keyboard 11 and a mouse 12 are connected to a CPU 13. By operating these, an X-ray condition, a confirmation signal, a priority signal, an exposure X-ray dose, and the like can be input. Basically, when X-ray conditions are input,
In response to this, a command is issued to the X-ray control device 14, and the X-ray tube 15 is controlled according to the conditions. That is, when X-ray conditions such as an X-ray tube voltage, a tube current, an exposure time, and the number of shots (the number of exposures) are input, the X-ray controller 14 converts the X-ray into the corresponding voltage, current, time, and number of times. The X-ray tube 15 is driven, and X-rays are emitted from the X-ray tube 15. The irradiated X-rays pass through a subject (not shown), enter a film (not shown) or the like, and record an X-ray image.

On the other hand, a memory 16 is connected to the CPU 13. The memory 16 stores a correspondence (table) between X-ray conditions and X-ray exposure doses generated by the X-ray tube 15 under the conditions.
This correspondence is measured and written in advance for each device. Then, as described above, the keyboard 11,
When an X-ray condition is input by the mouse 12, an exposure X-ray dose corresponding to the X-ray condition is read from the memory 16. The X-ray conditions consist of a combination of X-ray tube voltage, tube current, exposure time, number of exposures, etc. If it is not possible to store the X-ray dose for all of these combinations, only the representative combination is used. May be obtained by storing the exposure X-ray dose for the input X-ray condition, and when the exposure X-ray dose corresponding to the input X-ray condition is not stored, the CPU 13 performs an interpolation calculation or the like from a value in the vicinity thereof.

The exposure X-rays converted according to the input X-ray conditions are displayed on the display device 17. for that reason,
By viewing the display on the display device 17, the operator can determine whether the exposure X-ray dose is appropriate or excessive, and can review or correct the X-ray conditions based on the determination. . When the exposure X-ray dose is appropriate, or when the X-ray condition is corrected and appropriate, the keyboard 11 or the mouse 12 is operated to input a confirmation signal to the CPU 13. Then, the confirmed X
A command corresponding to the line condition is given to the X-ray controller 14 and X-rays are emitted from the X-ray tube 15 according to the condition.

An IC card device 18 is also connected to the CPU 13. An IC card in which the X-ray exposure history (exposure date / time and exposure dose) of each subject is recorded is inserted into this IC card device 18, and this record is read out and displayed on the display device 17. Is displayed together with the exposure X-ray dose corresponding to the X-ray condition. Therefore, the above determination can be made in relation to the X-ray exposure history of the subject who is about to perform the X-ray examination from now on. When the X-ray irradiation is actually performed after the confirmation signal is input as described above, the X-ray dose is recorded on the IC card together with the date and time.

[0012] In this way, by giving each person an IC card that records the X-ray exposure history of each subject, X-ray examinations can be performed at various hospitals and various medical departments within the same hospital. When receiving, even if the operator, doctor, etc. change, the past history of X-ray exposure for that individual can be understood,
Appropriate judgment on the individual's X-ray exposure can be made.

In the above description, when an X-ray condition is input, it is converted into an exposure X-ray dose and displayed.
It is also possible to input a dose and convert it to a corresponding X-ray condition and display it. At this time, the keyboard 11 and the mouse 12 are operated to input a priority signal indicating the priority of the exposure X-ray, switch the mode, and then input the exposure X-ray. If a number of X-ray conditions are indicated on the display device 17, one of them is selected, or if only one X-ray condition is displayed and it is determined that it is appropriate, a confirmation signal is issued immediately. input. As a result, a command regarding the X-ray condition is given to the X-ray control device 14, and the X-ray according to the condition is emitted from the X-ray tube 15.

In this case, if the subject's IC card is inserted into the IC card device 18 and the X-ray exposure history is read, the history is displayed on the display device 17. It is convenient for doctors and operators because they can determine and input the exposure X-ray dose with reference to the information.

When returning to the previous mode of the X-ray condition priority,
A priority signal indicating the priority of the X-ray condition is input by the keyboard 11 and the mouse 12.

Therefore, for example, in a X-ray CT apparatus, when making a diagnosis plan such as which part, at what slice pitch, and how many slice planes are to be imaged, etc. Leverage plans can be set or modified, and a diagnosis can be performed in consideration of the safety of the subject regarding X-ray exposure. Further, in the fluoroscopic examination by the X-ray fluoroscopic apparatus, when the fluoroscopy is performed for a long time and the input X-ray dose exceeds the input exposure dose, the CPU 13 automatically determines it and issues a stop command to the X-ray control apparatus 14. May be configured to stop the subsequent X-ray exposure.

In the above description, the keyboard 11 and the mouse 12 are used to perform various inputs.
A dedicated setting switch or changeover switch may be used. Also, a device configured as a dedicated control device without using the CPU 13 can be used. In addition, it goes without saying that the specific configuration and the like can be variously changed without departing from the spirit of the present invention.

[0018]

As described above, according to the X-ray diagnostic imaging apparatus of the present invention, the exposure X-rays corresponding to the X-ray conditions are converted and displayed, so that the exposure X-rays to the subject can be quantified. , The safety of the subject with respect to X-ray exposure can be further improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 11 keyboard 12 mouse 13 CPU 14 X-ray control device 15 X-ray tube 16 memory 17 display device 18 IC card device

Claims (1)

[Claims] An X-ray condition inputting means, an X-ray generating means for generating X-rays according to the input X-ray condition,
X-ray conditions and X-ray exposure from X-ray generator
Storage means for storing a correspondence relationship with the dose, conversion means for accessing the storage means to convert X-ray conditions into exposure X-ray dose, and means for displaying the converted X-ray exposure dose. X-ray diagnostic imaging apparatus.