JPH0553392B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention includes a radiation detector that scans a predetermined object or area to detect radiation, and an imaging device that images the object or area, The present invention relates to a so-called radiation television device that displays radiation measurement results on an imaging screen, and particularly to improvements thereof.

[Prior Art] This type of radiation television device is known, and in this device, an imaging device including an ITV (industrial television) camera is placed near a radiation detector, and radiation measurement results are displayed on a screen. is common.

[Problem to be solved by the invention]

However, in such a device, the radiation detector and the ITV camera cannot be installed at exactly the same position, so there is a problem that the measurement position of the radiation detector and the image of the ITV camera do not necessarily match.

Therefore, this invention is a radiation detector and an ITV.
An object of the present invention is to provide a radiation television device whose position can be matched with a camera.

[Means to solve the problem]

a storage device that stores images captured by the imaging device; a drive mechanism that moves the imaging device and the radiation detector to the same position at different times; and an output from the imaging device stored in the storage device; A combining means for combining the output from the radiation detector and the output from the radiation detector is provided.

[Effect]

By aligning the positions of the radiation detector and the imaging device with the drive mechanism, and by combining the output of the imaging device and the output of the radiation detector stored in the storage device with the combining means, reliability can be improved. To obtain high quality radiographic images.

〔Example〕

Figure 1 is a schematic diagram showing an embodiment of this invention;
The figure is a block diagram showing a radiation television apparatus to which the present invention is applied.

First, explanation will be given from FIG. 2. In the same figure, 1
is a distance meter, 2 is a radiation detector, 3 is a detector scanning mechanism, 4 is an imaging device (ITV camera), 5 is its driving mechanism, 6 is a radiation counter, 7 is an image storage device, 8
9 is a data processing device (CPU) such as a microcomputer, 9 is a mixing device, and 10 is a CRT display device. Here, the rangefinder 1 is an optical rangefinder that is often used in automatic focusing cameras, the radiation detector 2 is a NaI (Tl) scintillation detector or a semiconductor detector, and the counting unit 6 is used. A counting rate meter (rate meter) can be used respectively.

The output from the radiation detector 2, which performs horizontal and vertical scanning by the scanning mechanism 3, is given to the counting section 6 and converted into a count rate (cps), which is taken into the CPU 8 at regular intervals as radiation intensity data.
The distance meter 1 measures the distance of the radiation detector 2 from the object or area to be measured, and based on this, corrects the radiation intensity data. On the other hand, the image of the object or region to be measured is driven by the drive mechanism 5.
After being imaged by the ITV camera 4 and stored in the image storage device 7, it is provided to the mixing device 9.
Therefore, by combining the output from the CPU 8 and the output from the image storage device 7 in the mixing device 9, it is possible to display and confirm the measurement position of the radiation detector 2 on the CRT 10. .

The outline of the radiation television apparatus has been described above, and the present invention further includes the following. In other words, the radiation detector and ITV camera are installed as shown in Figure 1A, for example.
By arranging them facing 180 degrees in opposite directions and rotating them 180 degrees around an axis perpendicular to the plane of the paper, they can be placed in exactly the same position. Note that although the installation angle and rotation angle of the radiation detector and ITV camera were set to 180° here, it is of course not limited to this.

Also, the above is an example of using rotational motion,
Horizontal motion can be used as shown in FIG.
In this case, by reducing the horizontal stroke, the entire device can be made smaller than the one shown in FIG. Furthermore, although not shown,
It is also conceivable to use vertical motion instead of the horizontal motion shown in FIG.

Although these examples are in principle,
Since there are various implementation means and can be selected as appropriate, the explanation will be omitted.

〔Effect of the invention〕

According to this invention, since the radiation detector and the ITV camera can be placed at the same position, it is possible to correctly confirm the measurement position by the radiation detector on the screen, and obtain highly reliable radiation images. be able to.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing an embodiment of this invention;
The figure is a block diagram showing a radiation television apparatus to which the present invention is applied. Description of symbols, 1... Distance meter, 2... Radiation detector, 3... Detector scanning mechanism, 4... ITV camera,
5... ITV camera drive mechanism, 6... Radiation counter, 7... Image storage device, 8... Data processing unit (CPU), 9... Mixing device, 10... CRT
Display device.

Claims (1)

[Claims] 1. A radiation detector that scans a predetermined object or region to detect radiation, and an imaging device that images the object or region, and displays radiation measurement results on the captured image. A radiation television apparatus, comprising: a storage device that stores the captured image; a drive mechanism that moves the radiation detector and the imaging device to the same position at different times from each other; and an output from the imaging device stored in the storage device. 1. A radiation television device comprising: combining means for combining the output from the radiation detector and the output from the radiation detector;