JPH0884726A - Radiation ct apparatus - Google Patents

Abstract

PURPOSE: To enable the realizing of a patient look guide with better visual recognizability by providing a cover of a gantry with a light transmitting display part and the side of a radiation source rotating with respect to the subject with a light emitting part to give optical information to the subject. CONSTITUTION: A subject 12 is moved and placed at a desired position of an insertion port 13 for the subject of a gantry 10 with a cradle 11. A radiation source 14 is so arranged in the gantry 10 to expose the subject 12 to radiation rotating around the subject 12 and the radiation rotating with the radiation source 14 to transmit the subject 12 is detected with a detecting section 15. A gantry cover 21 is attached to cover the radiation source 14 and rotary device parts such as the detecting section 15. A notch part is formed at an upper part of a cone part 22 formed at front and rear openings of an insertion hole 13 for the subject of the cover 21 and a light transmitting display part 23 is attached to the notch part. Moreover, the rotary device part is provided with a light emitting part 30 passing over the display part 23 thereby achieving an improving of visual recognizability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiation CT (Computed Tomography) apparatus in which at least a radiation source (for example, X-rays and γ-rays) rotates around a subject in a gantry, and more specifically, a radiation CT apparatus. Patient look guide used in.

[0002]

2. Description of the Related Art In an examination using a radiation CT apparatus, a subject must stop breathing during scanning.

Such instructions to the subject regarding breathing are usually given by "voice", but in the case of a subject with hearing impairment, "visual" instructions (patient look guide) are used.

FIG. 6 shows an X described in Japanese Patent Laid-Open No. 3-14446.
FIG. 7 is a front view of the line CT apparatus gantry, FIG. 7 is a sectional view taken along the line AA in FIG. 6, and FIG. 8 is an enlarged view of the display in FIG.
In FIGS. 6 and 7, an indicator 4 having a built-in illumination is provided on the cone portion 3 formed in the front and rear openings of the subject insertion hole 2 of the gantry cover 1. .

On the display 4, as shown in FIG.
There are two types of displays, REATH (breathable) and HOLD (no breathing), and they are illuminated by different light sources.

[0006]

Since the indicator 4 having the above structure is provided on the gantry cover, it is necessary to avoid interference with the rotating device in the gantry cover 1, and the installation location and size are limited. There is.

Therefore, there is a problem that the subject cannot visually recognize the display device 4 depending on the physique of the subject, the position of the cradle, and the tilt angle of the gantry. The present invention has been made in view of the above problems, and an object thereof is to provide a radiation CT apparatus having a patient look guide with good visibility.

[0008]

SUMMARY OF THE INVENTION The present invention for solving the above problems, in a radiation CT apparatus in which at least a radiation source rotates around a subject in a gantry, a light-transmissive display provided on a cover of the gantry. And a light-emitting unit that is provided on the side of the radiation source that rotates with respect to the subject and that gives information to the subject by light.

It is desirable that the light emitting portion has a plurality of light emitting patterns in order to distinguish the display contents, and further, the light emitting portion preferably passes over the display portion in order to obtain the brightness of the display portion as much as possible.

[0010]

In the radiation CT apparatus of the present invention, the light from the light emitting portion is transmitted through the light transmissive display portion as the radiation source rotates.

Since the display unit can be installed by replacing a part of the gantry cover, and the light emitting unit is provided on the side of the radiation source that rotates with respect to the subject, restrictions on the installation location and size are reduced.

Therefore, the display unit can be provided at any position on the gantry cover, and the size of the display unit is not limited, so that the visibility is improved. Then, by changing the light emission pattern of the light emitting unit, it is possible to transmit information such as "breathing prohibited" or "breathable" to the subject through the light transmissive display unit.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the drawings. 1 is a front view of a radiation CT apparatus according to a first embodiment of the present invention, which is a sectional view taken along the line BB in FIG. 2, and FIG.
3 is a front view of the radiation CT apparatus of the embodiment of FIG. 3, FIG. 3 is a view for explaining the light emitting unit in FIG. 1, (a) is a front view, (b) is a top view,
4C is a sectional view taken along the line CC in FIG. 4A, and FIG. 4 is a view for explaining the mounting of the light emitting unit in FIG.

First, in FIGS. 1 and 2, 10 is a gantry, and 11 is a cradle on which a subject 12 is placed and which moves the subject 12 to a desired position of a subject insertion port 13 of the gantry 10. .

In the gantry 10, a radiation source 14 that rotates around the subject 12 and irradiates the subject 12 with radiation.
And a detector 15 that rotates with the radiation source 14 and detects the radiation that has passed through the subject 12.

Reference numeral 21 is a gantry cover made of FRP (fiber reinforced plastics) or the like for covering the rotating equipment such as the radiation source 14 and the detector 15. A cutout is provided in the upper part of the cone portion 22 formed in the opening before and after the subject insertion hole 13 of the gantry cover 21, and the cutout is semitransparent as a light-transmissive display portion. A milky white plate 23 is provided.
In the present embodiment, the size of the plate 23 is the width
(W) 100-150 mm, the shape was set so as to be distributed about 45 ° around the top.

Reference numeral 30 is a light emitting portion which is provided on the side of the rotating equipment such as the radiation source 14 and the detecting portion 15 and which passes over the plate 23. Next, the light emitting unit 30 will be described with reference to FIGS. 3 and 4. The light emitting unit 30 of this embodiment includes three types of light bulbs 31 of different colors (for example, red, blue, and yellow) and a shade 32 that scatters and reflects light emitted from these light bulbs 31. Further, the shape of the umbrella 32 is extended to the vicinity of the cone portion 22 as shown in FIG. 4 so that light leakage is minimized.

Next, the operation of the above configuration will be described. The subject 12 on the cradle 11 moves to a predetermined position inside the subject insertion opening 13 of the gantry 10. At this time, the light emitting unit 30
Is on the plate 23, and the blue light bulb 31 of the light emitting unit 30
Lights up and informs the subject 12 via the plate 23 that the subject 12 is “breathable”.

Then, the rotating device parts such as the radiation source 14 and the detecting part 15 rotate. At this time, in the light emitting unit 30 rotating with the rotating device unit, the blue light bulb 31 is turned off and the yellow light bulb 31 is turned off.
Lights up. This yellow light bulb 31 lights up when the subject 12
Is recognized as a yellow blinking through the plate 23,
Inform them that they will soon stop breathing.

Immediately before the start of scanning, the yellow light bulb 31 of the rotating light emitting section 30 is turned off, and the red light bulb 31 is turned on this time. The lighting of the red light bulb 31 is recognized by the subject 12 via the plate 23 as a blinking red light, and informs the subject 12 that "breathing is stopped".

According to the above construction, the plate 23 as the display part is installed by replacing a part of the gantry cover 21, and the light emitting part 30 is provided on the rotating device side, so that the light emitting part is provided on the gantry cover side. There are far fewer placement and size restrictions than traditional patient look guides. Therefore, the plate 23 can be enlarged, and the visibility can be improved.

The present invention is not limited to the above embodiment. In the above embodiment, the light emitting unit 30 is provided with the light bulbs 31 of three different colors, but two types (for example, green and orange) may be used. When green is called "breathable" and orange is called "breathing stopped", when the rotating device is stopped, the light emitting unit 30 is on the plate 23, the green light bulb of the light emitting unit 30 lights up, and the plate The subject 12 is informed via 23 that "breathing is possible".

When the rotating device starts to rotate, it blinks in green, and an orange light bulb may be turned on immediately before the start of scanning to notify the subject 12 of "breathing stop". or,
Although the light bulb 31 is used as the light emitting unit 30, the light emitting unit 30 is not limited to this, and may be any light emitting diode or the like having sufficient brightness for the subject 12 to discriminate colors through the plate 23. Anything is fine.

Further, in the above structure, the light bulbs 31 of a plurality of colors are used.
However, the color may be changed by using a filter. Furthermore, in the above embodiment, the light emitting bulb 31 emits light continuously, but by enabling pulsed emission, it is possible to increase the types of information transmitted to the subject 12.

Further, in the above embodiment, the information is transmitted to the subject 12 by a plurality of colors and a plurality of light emission patterns, but the information is transmitted to the subject 12 by characters or pictures. May be. FIG. 5 is a configuration diagram of a main part of a light emitting unit according to a second embodiment of the present invention.

Reference numeral 40 is a slide film on which characters and pictures are recorded, and 45 is a holder for holding the slide film 40. Reference numeral 41 is a light bulb for sliding that projects light onto the slide film 40, and 42 and 43 are condenser lenses provided in the slide holder 45 so as to sandwich the slide film 40. Coloring light bulbs 44 of different colors are provided on both sides of the sliding light bulb 41. Also, 45 is a bulk.

In the light-emitting unit having such a structure, by recording character information and a picture for soothing the subject on the slide film 40, the information is projected on the translucent milky white plate 23. By increasing the amount of information for the examinee and recording pictures etc. on the slide film, it is possible to perform a smooth examination of infants and the like.

[0028]

As described above, according to the present invention, a light-transmissive display portion provided on the cover of the gantry is provided, and information by light is provided to the subject on the side of the radiation source rotating with respect to the subject. By providing the light emitting portion for providing the display, the display portion can be provided at an arbitrary position of the gantry cover, and the size of the display portion is not limited, so that the visibility is improved.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line BB in FIG. 2, which is a front view of a radiation CT apparatus according to a first embodiment of the present invention.

FIG. 2 is a front view of the radiation CT apparatus according to the first embodiment of the present invention.

3A and 3B are diagrams illustrating a light emitting unit in FIG. 1, in which FIG. 3A is a front view, FIG. 3B is a top view, and FIG. 3C is a cross-sectional view taken along line CC in FIG.

FIG. 4 is a diagram illustrating how the light emitting unit in FIG. 1 is attached.

FIG. 5 is a main part configuration diagram of a light emitting unit according to a second embodiment of the present invention.

FIG. 6 is a front view of an X-ray CT apparatus gantry described in Japanese Patent Laid-Open No. 3-14446.

7 is a cross-sectional view taken along the line AA in FIG.

FIG. 8 is an enlarged view of the display device in FIG.

[Explanation of symbols]

 23 plate (display section) 30 light emitting section

Claims (3)

[Claims] 1. A radiation CT apparatus in which at least a radiation source rotates around a subject within a gantry, a light-transmissive display unit provided on a cover of the gantry, and a radiation source rotating relative to the subject. A radiation CT apparatus, comprising: a light emitting section provided on the side for giving information by light to a subject. 2. The radiation CT apparatus according to claim 1, wherein the light emitting unit has a plurality of light emitting patterns. 3. The radiation CT apparatus according to claim 1, wherein the light emitting unit passes over the display unit.