High-voltage apparatus, and radiation source and radioscopic apparatus having the same
First Claim
1. A high-voltage apparatus for supplying voltage to a radiation source having a rotating anode, a chamber enclosing the rotating anode, a rotating device for rotating the rotating anode such that a number of rotations of the rotating anode increases to a target value, and a rotation control device for controlling the rotating, anode, the high-voltage apparatus comprising:
- a voltage applying device for applying a voltage to the rotating anode; and
a voltage application instructing device for instructing the voltage applying device to apply a predetermined voltage for enabling radioscopy after the rotation control device starts rotation of the rotating anode;
wherein the voltage application instructing device instructs the voltage applying device to apply the predetermined voltage to start irradiation at a time point when the rotating anode reaches a high number of rotations to an extent of being free from damage, said time point being before the number of rotations arrives at the target value.
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Accused Products
Abstract
In a high-voltage apparatus according to this invention, a predetermined voltage is applied to a rotating anode after waiting until the number of rotations increases to such an extent that the rotating anode is not damaged. That is, X-rays of desired intensity are already outputted from a point of time when the voltage is applied to the rotating anode. Therefore, diagnosis can be performed immediately after the voltage is applied to the rotating anode. That is, unlike the prior art, there is no need to wait until X-ray intensity becomes suitable for diagnosis after X-ray emission is started, and there is no need to irradiate the patient with unnecessary X-rays. Therefore, the patient can be inhibited from being irradiated with excessive X-rays (with an improvement made in a response from when the operator gives instructions for starting fluoroscopy until emission of X-rays suitable for diagnosis).
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Citations
8 Claims
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1. A high-voltage apparatus for supplying voltage to a radiation source having a rotating anode, a chamber enclosing the rotating anode, a rotating device for rotating the rotating anode such that a number of rotations of the rotating anode increases to a target value, and a rotation control device for controlling the rotating, anode, the high-voltage apparatus comprising:
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a voltage applying device for applying a voltage to the rotating anode; and a voltage application instructing device for instructing the voltage applying device to apply a predetermined voltage for enabling radioscopy after the rotation control device starts rotation of the rotating anode; wherein the voltage application instructing device instructs the voltage applying device to apply the predetermined voltage to start irradiation at a time point when the rotating anode reaches a high number of rotations to an extent of being free from damage, said time point being before the number of rotations arrives at the target value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A radiation source comprising:
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a rotating anode; a chamber enclosing the rotating anode; a rotating device for rotating the rotating anode such that a number of rotations of the rotating anode increases to a target value; a rotation control device for controlling the rotating anode; a voltage applying device for applying a voltage to the rotating anode; and a voltage application instructing device for instructing the voltage applying device to apply a predetermined voltage for enabling radioscopy after the rotation control device starts rotation of the rotating anode; wherein the voltage application instructing device instructs the voltage applying device to apply the predetermined voltage to start irradiation at a time point when the rotating anode reaches a high number of rotations to at extent of being free from damage, said time point being before the number of rotations arrives at the target value. - View Dependent Claims (8)
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Specification