JPH0420406Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention is applicable to
The present invention relates to an autovoice for an X-ray tomography apparatus that is added to a tomography apparatus and automatically operates in accordance with the operation of the X-ray tomography apparatus.

(Prior art) When performing tomography using an X-ray tomography device (hereinafter referred to as X-ray CT), it is necessary to reduce the Since it is necessary to restrict the movement of the patient at certain times, the X-ray CT is equipped with a simple broadcasting device called auto voice, which sends messages such as the following to the patient.

(1) Take a breath and hold it.

(2) Please do not move.

(3) Breathe in, breathe out, and hold it.

The start message by auto voice and the end message broadcast at the end of the shooting are activated by the operator deciding the message content in advance and
When a main switch (not shown) is turned on for CT operation, the control device automatically performs the operation based on commands from the computer.

(Problem that the invention attempts to solve) By the way, the X that is not equipped with auto voice
When auto voice is added as an option to the X-ray CT, unlike when it is pre-equipped, the activation signal to automatically generate the voice does not come from the X-ray CT, so the operator has to adjust the timing when each message is generated. I pressed the switch to start it up. Therefore, the operator is required to operate both the X-ray CT and the autoboice, which is inconvenient and difficult to achieve accurate timing.

This invention was developed in view of the above problems, and its purpose is to ensure that even if AutoVoice is externally attached to an X-ray CT, the operation will be the same as that of an X-ray CT that is equipped with AutoVoice from the beginning. X with gender
The aim is to realize auto voice for line CT.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a method that is added to an X-ray tomography apparatus that is not equipped with an auto-voice function, and is adapted to match the operation of the X-ray tomography apparatus. In an auto voice for an X-ray tomography apparatus that automatically operates, means for branching an X-ray tube rotating anode on signal, an X-ray tube ready signal, and a high voltage on signal, respectively, for controlling an X-ray generator; a switching means for selecting a type of start message; a sound type determining means for outputting a code of the type of the start message selected by the switching means by an X-ray tube rotating anode ON signal; a delay means for giving a delay time depending on the length of the type and ending the broadcasting of the start message at the same timing; and outputting an end message code when the X-ray tube rotating anode ON signal or the high voltage ON signal falls. and a termination voice control means for generating a start signal for the termination message; a voice synthesis means for synthesizing and outputting the voice of the message according to the message code; and a delay suitable for broadcasting the start message for the X-ray tube preparation completion signal. The present invention is characterized by comprising a delay means for giving.

(Function) The message code selected by the switching means is output by a signal branched from the X-ray tube rotating anode ON signal (hereinafter referred to as the XG ON signal), and is subject to a delay depending on the length of the message code. broadcast the start message. The X-ray tube ready signal (hereinafter referred to as the "XG ready signal") from the X-ray generator is delayed by a delay means adapted to the length of the start message, and a high voltage on signal (hereinafter referred to as the "HV on signal") is generated. The timing is limited, and when the shooting ends, a completion message is broadcast at the falling edge of the XG on signal or HV on signal.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention. The figure also shows the signal circuit from when the main switch is turned on to operate the X-ray CT until the apparatus starts operating. 1a and 1b are XG
It is a contactless connector that is composed of a light emitting diode and a phototransistor provided in a circuit that transmits an on signal, and is connected without contact, and includes an input circuit to which the XG on signal 1 is input, and amplifiers 2a and 2b. , 2b, and an output circuit that outputs the XG on signal 3 to the X-ray generator 3 are connected to each other. 4
a and 4b are an input circuit to which the HV ON signal 1 is inputted as described above, an intermediate circuit including amplifiers 5a and 5b to which the HV ON signal 2 is outputted, and an output circuit for outputting the HV ON signal 3 to the X-ray generator 3. A non-contact connection circuit 6 connects the output circuit to the X-ray tube rotating anode, which is output from the X-ray generator 3 when the filament is heated and thermionic emission becomes possible.
Signal circuit of XG ready signal 1 and XG ready signal 4
It is a contactless connector that connects a circuit that outputs the signal to a control circuit (not shown).The input circuit includes an amplifier 7a, and the output circuit includes amplifiers 7b and 7c.The amplifier 7b outputs the XG ready signal 2, and the XG for 7c
Ready signal 3 is being input. Reference numeral 11 denotes a switch for selecting in advance the type of start message (the type of message described above) to be broadcast before the start of X-ray exposure. Reference numeral 12 denotes an audio type determining circuit which has at least as many input terminals as the number of messages and outputs a code for the type of message to be broadcast determined by the contact position of the switch 11; 2, the start message code is input to the speech synthesizer 13. 14a to 14d are delay elements whose delay time lengths are changed according to the length of each start message, and the delay times are selected so as to keep the time constant from the time when the XG ON signal is input to the end of the start message. be. 15 is a delay element 14a to 14
This is an OR circuit that outputs the audio start signal 1 no matter which one of d is selected. 16 outputs a positive start signal 2 at the falling edge of the XG on signal or a positive start signal 2 at the falling edge of the HV on signal when the start signal 1 is input, thereby ending the X-ray CT imaging. The termination voice control circuit controls the generation of the notification termination message, and the output start signal 2 is input to the other terminal of the OR circuit 17, so that the termination message is broadcast. 18 is an XG ready signal circuit, into which the aforementioned XG ready signal 2 is input, and at least
This is a delay element that outputs the XG ready signal 3 after delaying it by an appropriate amount of time corresponding to the time from when the ON signal 2 is input to when the message broadcast ends.

Next, the operation of the embodiment configured as described above will be explained. When the operator starts tomography using X-ray CT, he selects a message suitable for the area to be imaged using the switch 11, and turns on the main switch to start the operation. By this operation, the XG on signal 1 is output, and the XG on signal 2 is output from the amplifier 2a via the contactless connector 1a, and the XG on signal 2 is sent to the X-ray generator 3 via the amplifier 2b and the contactless connector 1b. On signal 3 is input. In the X-ray generator 3, the rotating anode of the X-ray tube starts rotating, and when the filament is heated by the filament current and thermionic emission becomes possible, an XG ready signal 1 is output. The XG ready signal 1 is output as the XG ready signal 2 through the amplifier 7a, the contactless connector 6, and the amplifier 7b, and is delayed by the delay element 18 to
The signal becomes ready signal 3, which is amplified by amplifier 7c and then inputted to the control device as XG ready signal 4. When the XG ready signal 4 is input, the HV on signal 1 is output from the control device, and the same circuit as the XG on signal outputs the HV on signal 2, and the HV on signal 3 is input to the X-ray generator 3. A high voltage is applied to the anode of the ray tube to emit X-rays. A time chart of the above signals is shown in FIG. In the figure, A is the waveform of the XG on signal. Ro is
This is the waveform of the XG ready signal, and it rises after the time delay until the filament is heated after the XG on signal is input. C is the waveform of the HV ON signal, which rises after the XG ready signal 3 after the XG ready signal is delayed by the delay element 18. In addition, in the control device,
Delays caused by connectors, amplifiers, etc. are negligible.

The XG-on signal 2 generated as described above is input to the autovoices below switch 11 in FIG. A message code is input to the speech synthesizer 13 in accordance with the input terminal of the speech type determining circuit 12, which is determined by the contact position of the switch 11 set in advance, and the message to be broadcast is set. On the other hand, the XG on signal 2 is inputted to the delay element 14a adapted to the length of the message through the contacts of the switch 11, and is inputted to the delay element 14a in the figure, subjected to a predetermined delay, and then passed through the OR circuit 15 and the OR circuit 17 to the speech synthesizer. 13 as a start signal. With this start signal, the message selected as described above is broadcast. In FIG. 2, d represents the audio signal from the auto voice, each message is selected by the switch 11, activated by the rising edge of the XG on signal 2, and a delay element is applied depending on the length of the message. 14a to 14b, and are controlled to align the end times of the messages. After the message ends, the delay element 18
by XG ready signal 3 delayed by
The HV ON signal is enabled to rise, and the X-ray CT starts operating.

The XG on signal 2 and the HV on signal 2 are input to the end voice control circuit 16, and the start signal 2 is input to the end voice control circuit 16 when the XG on signal falls or the HV on signal falls. is generated, inputted to the OR circuit 17, and then sent to the speech synthesizer 13.
The ending message will be broadcast from. For the end message, a message code is inputted from the voice type determination circuit 12 to the voice synthesizer 13 in response to a signal from the end voice control circuit 16.

As explained above, according to this embodiment, just by selecting the type of message and turning on the main switch, the start message and end message are automatically broadcast at the appropriate timing.
AutoVoice can now be used with the same operability as X-ray CT systems that come standard with AutoVoice.

(Effects of the invention) As explained in detail above, according to the invention,
X-ray CTs to which auto-voice was later added have the same operability as X-ray CTs that were originally equipped with auto-voice, which has a great practical effect.

[Brief explanation of the drawing]

Figure 1 is a block diagram of one embodiment of the present invention, Figure 2 is a block diagram of an embodiment of the present invention.
The figure is a time chart of signals in the embodiment. DESCRIPTION OF SYMBOLS 11...Switch, 12...Speech type determination circuit, 13...Speech synthesis device, 14a, 14b, 1
4c, 14d, 18... delay element, 15, 17...
...OR circuit, 16...End audio control circuit.

Claims (1)

[Scope of utility model registration request] In addition to an X-ray tomography device not equipped with an auto voice, an X-ray tomography device auto voice that automatically operates in accordance with the operation of the X-ray tomography device controls an X-ray generating device. do X
means for branching the ray tube rotating anode on signal, the X-ray tube ready signal, and the high voltage on signal, respectively; a switching means for selecting the type of start message; and a switch for selecting the start message type selected by the switching means. voice type determining means for outputting a type code by an X-ray tube rotating anode ON signal; and a delay for giving a delay time depending on the length of the type of the start message and ending the broadcasting of the start message at the same timing. means, termination sound control means for outputting a termination message code and generating a start signal for the termination message in response to a fall of the X-ray tube rotating anode ON signal or the high voltage ON signal; An auto-voice for an X-ray tomography apparatus, comprising: a voice synthesizing means for synthesizing and outputting the synthesized voice; and a delay means for giving an X-ray tube preparation completion signal a delay suitable for broadcasting a start message.