JPS5910973Y2 - X-ray diagnostic equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an X-ray diagnostic device with a self-cooling function.

In general, in an X-ray diagnostic device, such as a computer-operated third-generation X-ray tomography device (CT scanner), a radiation source and a detector are placed opposite each other in a donut-shaped scanning unit. Set up a pedestal,
By combining the scanning and rotation of this rotary pedestal, diagnosis can be performed by photographing the subject from multiple directions.

That is, at present, the rotary pedestal is rotated once every 4.5 seconds, and this is repeated repeatedly.

Therefore, the heat generated from the radiation source is also extremely large, and the means of cooling it becomes a problem. Conventional countermeasures for this type of problem include extremely conventional cooling methods, such as storing a fan separately in the unit and rotating it. It has been adopted.

However, in this case, the blade noise generated by the fan during rotation can reach an extremely high level of 60 phon or more, which has the disadvantage of causing discomfort to the subject.

The present invention has been made to eliminate the above-mentioned drawbacks, and includes arranging a plurality of ventilation fins approximately along the radial direction on the outer periphery of the hollow cylinder of a rotary stand having a hollow cylinder, and providing ventilation holes in the scanning unit. Thus, the present invention aims to provide an X-ray diagnostic apparatus equipped with a self-cooling function that provides ventilation and air cooling effects within the unit as well as the operation of a rotating mount that rotates around an object in a hollow cylinder.

The details of the present invention will be explained below with reference to FIGS. 1 to 3 for one embodiment.
This will be explained with reference to the figures.

Reference numeral 1 denotes a scanning unit, which is shaped like a case and has a circular insertion hole 4 into which an object 2 to be examined, for example, a human body, can be inserted together with a top plate 3 on which it is placed.

5 is a rotary frame, a hollow cylinder 6 and this hollow cylinder 6.
has a flange portion 7 formed integrally with the one end thereof,
The hollow cylinder 6 is supported inside a support 9 that stands upright from a base 8, and is rotatable in the direction of the arrow AB in the drawing along the outer periphery of the insertion hole 4 by a bearing mechanism 9A.

10 is a radiation source that emits radiation, such as an X-ray tube, installed on one side of the flange portion 7; 11 is a detector that receives the X-ray beam emitted by this X-ray tube 10, and is arranged opposite to the X-ray tube 10; It is set up.

Reference numeral 12 designates air blowing fins, which are arranged in plural along the radial direction on the outer periphery of the hollow cylinder 6 of the rotary mount 5, and include an attachment ring 13 attached to the circumferential side of the other end;
It consists of a plurality of vanes 14 equally spaced within 3.

15 is a rotating belt, 16 is a drive mechanism that rotates and scans the rotating frame 5 at high speed, and the rotation of the motor in this drive mechanism 16 is controlled by a pulley attached to the outer periphery of the hollow cylinder 6 via a reducer 17 and a pulley 18. 19 and rotates the rotating gantry i around the object 2 placed in the hollow cylinder 6 while exciting the radiation source 10.

20.21 is a ventilation hole. As described above, in the present invention, a plurality of ventilation fins 12 are arranged around the outer periphery of the hollow cylinder 6 of the rotary mount 5 substantially along the radial direction thereof, and the scanning unit 1 is provided with ventilation holes 20 .
21, when the rotating mount 5 is repeatedly rotated 360 degrees to photograph the object 2 to be examined from multiple directions, the driving mechanism 16 causes the rotating mount 5 to rotate around the object 2 inserted into the insertion hole 4. It rotates at a high speed in the direction of the arrow in FIG. 3. Along with this rotation, the blower fin 12 also rotates, so outside air is introduced into the unit 1 through the ventilation holes 20 and 21, and the unit 1 is ventilated. Ventilation can be used to obtain a cooling effect.

Incidentally, since the rotational speed of the rotating frame 5 is 70 to 80 cm per second at the position of the fins, the amount of air introduced is also large and the inside of the unit 1 can be sufficiently cooled.

In addition, in this embodiment, one rotation of the rotating frame 5 was set to take 4.5 seconds, but it may take about 1.0 seconds, or in the case of an endless system without cable handling, a further air cooling effect can be obtained. can.

As detailed above, the present invention consists of a radiation source that emits radiation, a detector that receives the radiation, a radiation source, a rotary stand that is provided between the detectors and has a hollow cylinder to which at least the radiation source is fixed, and In an X-ray diagnostic apparatus consisting of a drive mechanism that rotates and scans a rotary pedestal at high speed while exciting a radiation source around a placed target, and a scanning unit that encloses the radiation source, detector, rotary pedestal, and drive mechanism. Since the hollow cylinder is equipped with a plurality of fins arranged along its radial direction on the outer periphery and a ventilation hole provided in the scanning unit, it has a self-cooling function and simultaneously rotates the rotating frame. It has the great advantage of allowing ventilation and cooling in the unit, which becomes hot when outside air is introduced.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, with Figure 1 being a schematic layout diagram and Figure 2 being a schematic layout diagram.
The figure is a partially cutaway side view, and Figure 3 is the III- in Figure 2.
FIG. 3 is a rear view cut along line III. 1...Scanning unit, 2...
Object, mutual...Rotating frame, 6...Hollow cylinder, 10...Radiation source, 11...Detector, 12... Fin, 16... Drive mechanism, 20.21... Ventilation hole.

Claims (1)

[Scope of utility model registration request] A radiation source that emits radiation, a detector that receives the radiation, a rotating mount that is provided between the radiation source and the detector and has a hollow cylinder in which at least the radiation source is fixed, and an object that is placed within the hollow cylinder. In the X-ray diagnostic apparatus, the X-ray diagnostic apparatus includes a drive mechanism that rotates and scans the rotary pedestal at high speed while exciting a radiation source at the center, and a scanning unit that encloses the radiation source, the detector, the rotary pedestal, and the drive mechanism. An X-ray diagnostic apparatus comprising: a plurality of fins arranged along the radial direction of the outer periphery of the scanning unit; and a ventilation hole provided in the scanning unit.