JP2001120537A - X-ray ct apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display the required time from the start of measurement to the finish of measurement and a residual measuring frequency to a subject on a display in an X-ray CT apparatus. SOLUTION: This X-ray CT apparatus is composed of an X-ray tube 32, the detector 31, a counter 33 for showing measuring data, a gantry 3 housing a scanner control part 34 for controlling these and a bed 2 provided with a display 21 for displaying information indicated to an examinee from an operator such as breath stopping required for the subject. The scanner control part 34 is constituted so as to easily understandably transmit the breath stopping timing to the subject by displaying indicating information to the subject such as time, residual measuring time, a residual measuring frequency up to the next measurement on the display 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray CT apparatus, and more particularly to an X-ray CT apparatus configured to notify a subject of a timing of breath holding during measurement in a manner that is easy to understand.

[0002]

2. Description of the Related Art An X-ray CT apparatus has a console for an operator to control and operate the entire apparatus, an X-ray control apparatus, a bed on which a subject lies, an X-ray source and an X-ray detector. And a gantry for collecting X-ray transmission data.

Further, on the gantry, there are provided a light for indicating the timing of breath holding that the subject needs to perform during the measurement and a speaker for giving an instruction to the subject from outside the CT room. This light is structured to be turned on during measurement (during X-ray irradiation). In addition, a voice instruction is given from a speaker before measurement (before X-ray irradiation), and a buzzer sounds during measurement. The subject was holding his / her breath by the sound from the light and the speaker or the instruction from the buzzer.

[0004]

As described above, the subject holds his or her breath during measurement by the X-ray CT apparatus.

[0005] However, due to the shortening of the scan time such as the subsecond scan, which is becoming the mainstream in recent years, the interval between breath holdings is also shortened, and the subject is difficult to understand with the conventional light and sound-only breath holding instructions. There was a problem that it was difficult to deal with.

An object of the present invention is to notify a subject of the time from the start of measurement to the end of measurement and the number of remaining measurements to solve the above problem.

[0007]

In order to solve the above-mentioned problems, the present invention comprises a bed on which a subject lies, and a gantry for collecting X-ray transmission data by an X-ray source and an X-ray detector. In this X-ray CT apparatus, a display is provided on the bed, and information for instructing the subject is displayed on the display.

[0008]

FIG. 1 is a block diagram of an X-ray CT apparatus showing an embodiment of the present invention. The X-ray CT apparatus emits X-rays to a subject, captures a tomographic image of an imaging part of the subject, performs a reconstruction operation, and displays the reconstructed image. , A bed 2 and a gantry 3. The console 1 includes an image processing apparatus 10, a memory 11 storing information such as character information and numerical values in Japanese or foreign languages, and a push button switch 12. The couch 2 has a table 22 and a display 21 provided on the table 22.
The gantry 3 includes an X-ray tube 32, a detector 31 thereof, a counter 33 indicating measurement data, and a scanner control unit 34 for controlling these.

FIG. 2 is a side view of the bed 2 and the gantry 3. A subject 23 is placed on a table 22 provided on the bed 2, and a display 21 is provided near the subject 23. The display 21 includes a display made of liquid crystal and a frame for further supporting the display, and one end of a tube 24 made of a flexible material is attached to the frame. Tube 2
The other end of 4 is rotatably or detachably attached to the center of the distal end of the table 22 by a known means. The signal line 35 of FIG. 1 is provided inside the tube 24. The gantry 3 is formed with a cavity 35 for emitting X-rays at the center thereof, and the table 22 moves into the cavity 35 to position the subject 23 at the measurement position. .

FIG. 3 shows a display surface of the display 21.
The subject 23 displays, on the display surface, instruction information for the operator to instruct the subject before and during the measurement, and sees the display information. There are various types of display information,
In the embodiment of the present invention, the subject 23 “until next breath hold”
A display surface 30 for displaying the “number of seconds” is provided. For example, 10 seconds before the start of the measurement is displayed, and when this time is sequentially reduced by one and becomes zero, the breath holding is started. Further, a display surface 31 is provided for displaying the "number of seconds" of "remaining breath hold" after the start of breath holding, and the breath hold is stopped when the number of seconds display becomes zero. Further, there is provided a display surface 32 for displaying the “number of times” of “the number of remaining breath holdings” for displaying how many remaining breath holding times remain.

Next, the operation of the present invention will be described in brief. In FIG. 2, the table 22 is inserted into the cavity 35 of the gantry 3 and the measurement position (imaging part) of the subject 23 is determined. In this case, a portion excluding the subject's head is set as an imaging region. The display 21 also moves along with the movement of the table 22 so that the subject 23
The subject 23 can see the information on the display screen of the display 21. In the case of head shooting,
Since the display 21 is in the way, it is rotated by 180 degrees or removed from the table 22. The scanner control unit 34 controls the X-ray tube 32 according to a command from the image processing apparatus 10.
And the detector 31 is controlled, and measurement of the imaging region of the subject 23 is performed. In this case, the scanner control unit 34 reads out desired character information (Japanese or foreign language) from the memory 11 with the operation of the image processing apparatus 10, displays these on the display surfaces 30, 31, 32, and further performs measurement. The data counter 33 displays the time until the next measurement, the remaining measurement time, and the number of remaining measurements on the display surfaces 30, 31, and 32, respectively. When the subject 23 looks at the display data displayed on the display surfaces 30, 31, and 32,
The subject 23 can easily know the timing of breath holding.

[0012]

As described above, according to the present invention, the subject's breath holding time can be easily communicated to the subject, and the burden of breath holding during measurement of the subject can be reduced. be able to.

[Brief description of the drawings]

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

FIG. 2 is a side view showing one embodiment of the present invention.

FIG. 3 is an outline of a display showing one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image processing apparatus 2 Bed 3 Gantry 21 Display 22 Table 23 Examinee 30,31,32 Display surface 35 Signal line

Claims (1)

[Claims] 1. An X-ray CT apparatus comprising a bed on which a subject rests and a gantry for collecting X-ray transmission data by an X-ray source and an X-ray detector, wherein a display is provided on the bed. An X-ray CT apparatus characterized by displaying instruction information for a subject on a display.