JP2011104118A - Image diagnostic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image diagnostic apparatus for preventing a subject from having an uneasy feeling due to the existence of a scanner being a heavy weight object by evacuating the scanner not in use from the visual field of the subject. <P>SOLUTION: A gantry 2 includes: a leg 3 whose lower end is fixed to a floor; a holding part 8 rotatably supported in the upper part of the leg 3; the scanner 4 whose one end is held by the holding part 8; a large gear 6 pivotally attached to the holding part 8; a small gear 7 to be engaged with the large gear 6; and a motor 5 pivotally attached to the small gear 7 and fixed to the leg 3. The scanner 4 is rotatably moved with the holding part 8 as a rotary center when the motor 5 is rotated, and located at an evacuation position on the outside of the visual field of the subject 9 as shown in Fig.1(1) when not used for photographing. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image diagnostic apparatus such as a positron ECT apparatus, a single photon ECT apparatus, an X-ray CT apparatus, or an X-ray imaging apparatus, and more particularly to an apparatus configuration that does not give a sense of anxiety and pressure to a subject.

  For example, a positron ECT (Emission Computed Tomography) device, a single photon ECT device, an X-ray CT device or the like is an image diagnostic device for imaging morphological information or functional information in the body of a subject. It consists of an examination table to be placed and a gantry equipped with a scanner for detecting images. There are two types of examination tables: a chair type in which a subject sits and undergoes an examination, and a bed type that lies on his side and undergoes an examination. The scanner is formed with a tunnel for inserting the inspection site of the subject.

  An image diagnostic apparatus such as an X-ray imaging apparatus includes an examination table on which a subject is placed, a support part that supports an X-ray tube and an image receiving apparatus, and a leg part that holds the support part. The morphological information or functional information in the body is imaged. The examination table includes a chair type in which a subject sits and undergoes an examination, and a bed type that lies on the side and undergoes an examination.

  On the other hand, in the chair-type examination table constituting the medical measurement device, by changing the position of the head rest surface of the headrest to the left and right with respect to the backrest, the head rest surface and the subject's head A mechanism has been proposed in which the position of the head can be adjusted to the left and right with respect to the detector without interposing any padding between them (see Patent Document 1).

JP 10-2160999 A

  A subject who sits on a chair-type examination table and sits in a chair-type examination table installed under a supporting part that supports a heavy scanner or X-ray tube and receiver. Therefore, I feel anxiety that the scanner or the support part falls over the head. A subject who is lying down on a bed type examination table will have his / her head next to the scanner or support, which is a large structure, so that the scanner or support will fall down. I feel anxiety and pressure.

  The present invention relates to an examination table on which a subject is placed, and an image diagnostic apparatus provided with a gantry, wherein the gantry is a scanner, a holding unit that rotatably holds the scanner, and the scanner as the scanner is rotated. And rotational movement means for moving outside the visual field of the person. Further, the gantry is a gantry constituting a ring type positron ECT device, a ring type single photon ECT device, a detector facing positron ECT device, a detector facing single photon ECT device or an X-ray CT device.

  Alternatively, in an X-ray imaging apparatus including an examination table on which a subject is placed, a support part that supports an X-ray tube and an image receiving device, and a leg part that holds the support part, the leg part is the support part. And a rotation moving means for moving the support portion out of the field of view of the subject while rotating. Therefore, the subject does not feel anxiety or pressure on the scanner or the support part.

  A subject who sits on a chair-type examination table and undergoes an examination is configured such that the scanner or support unit supported by the holding unit moves out of the field of view of the subject as it rotates, so the scanner or support unit is overhead I don't feel anxiety like falling. The subject who is lying down on the bed type examination table is configured to move the scanner or the support unit supported by the holding unit out of the field of view of the subject with rotation, so the scanner or the support unit falls down. I don't feel anxiety or pressure.

It is a figure which shows schematic structure of the ring type positron ECT apparatus by Example 1 of this invention. It is a figure which shows schematic structure of the ring type positron ECT apparatus by Example 2 of this invention.

  The ring type positron ECT device according to the first embodiment of the present invention includes a chair type examination table and a gantry. The ring type positron ECT device according to the second embodiment of the present invention includes a bed type examination table and a gantry.

  A first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a diagram showing a schematic configuration of a ring-type positron ECT device according to a first embodiment of the present invention. FIG. 1 (1) shows a schematic configuration when the scanner 4 is in a retracted state, and FIG. FIG. 4 is a diagram showing a schematic configuration when the scanner 4 is in a use state.

  The ring-type positron ECT device according to the first embodiment of the present invention includes a chair-type examination table 1 on which a subject 9 is seated and a gantry 2 as shown in FIGS. The gantry 2 includes a leg 3 having a lower end fixed to the floor, a holding part 8 rotatably supported above the leg 3, a scanner 4 having one end held by the holding part 8, and a holding part 8 and a shaft attachment. And a small gear 7 that meshes with the large gear 6, and a motor 5 that is pivotally attached to the small gear 7 and fixed to the leg 3.

  In the scanner 4, a substantially cylindrical tunnel 10 for inserting an inspection site of the subject 9 is formed in a substantially central portion, and a detector 11 is disposed in the vicinity of the outer periphery of the tunnel 10. As the motor 5 rotates, the scanner 4 rotates about the holding portion 8 as the center of rotation. When the image is not taken, the scanner 4 is in the retracted position as shown in FIG. 1 (1), and when the image is taken, shown in FIG. As shown, the examination site of the subject 9 is at a position where it is inserted into the tunnel 10.

  The examination of the subject 9 is performed as follows. (1) Place the subject 9 on the examination table 1. (2) Start the motor 5 and rotate the scanner 4 to insert the examination site (head) of the subject 9 into the tunnel 10. (3) Take a picture. (4) The motor 5 is reversely rotated to return the scanner 4 to the retracted position. (5) Remove the subject 9 from the examination table 1.

  Since the present invention has the above-described configuration, the subject 9 who sits on the chair-type examination table 1 and undergoes the examination moves the scanner 4 held by the holding unit 8 to the retracted position behind the subject 9 as the subject 9 rotates. Since it moves, there is no feeling of anxiety that the scanner 4 falls over the head. Further, when the scanner 4 captures an image at a position where the field of view of the subject 9 is not interrupted, the scanner 4 does not enter the field of view of the subject 9 in all steps of a series of examinations. Therefore, the presence of the scanner 4 is not conscious, and the feeling of pressure applied can be greatly reduced.

  A second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a diagram showing a schematic configuration of a ring-type positron ECT device according to Embodiment 2 of the present invention. FIG. 2 (1) shows a schematic configuration when the scanner 24 is in a retracted state, and FIG. FIG. 4 is a diagram showing a schematic configuration when the scanner 24 is in a use state.

  The ring-type positron ECT device according to the second embodiment of the present invention includes a bed type examination table 21 on which a subject 29 is laid down and a gantry 22 as shown in FIGS. The gantry 22 includes a leg 23 having a lower end fixed to the floor, a holding part 28 rotatably supported above the leg 23, a scanner 24 having one end held by the holding part 28, and a holding part 28 and a shaft attachment. The large gear 26, the small gear 27 that meshes with the large gear 26, the motor 25 that is pivotally attached to the small gear 27 and fixed to the leg 23, and supports one end of the scanner 24 when the scanner 24 is in the retracted state. It is composed of support columns 32.

  The scanner 24 is formed with a substantially cylindrical tunnel 30 into which an inspection site of the subject 29 is inserted at a substantially central portion, and a detector 31 is disposed in the vicinity of the outer periphery of the tunnel 30. As the motor 25 rotates, the scanner 24 rotates about the holding unit 28 as a rotation center. When the scanner 24 is not photographing, the scanner 24 is in the retracted position as shown in FIG. 2 (1), and when photographing, the scanner 24 is shown in FIG. 2 (2). As described above, the examination site of the subject 29 is in a position to be inserted into the tunnel 30.

  The examination of the subject 29 is performed as follows. (1) Lay the subject 29 on the examination table 21. (2) The motor 25 is activated and the scanner 24 is rotated to insert the examination site (head) of the subject 29 into the tunnel 30. (3) Take a picture. (4) The motor 25 is reversely rotated to return the scanner 24 to the retracted position. (5) Remove the subject 29 from the examination table 21.

  Since the present invention has the above-described configuration, the subject 29 who is lying on the bed-type examination table 21 and is inspected moves the scanner 24 held by the holding unit 28 out of the field of view of the subject 29 with rotation. Therefore, there is no sense of anxiety or pressure that makes the scanner 24 fall. Further, when the imaging is performed at a position where the scanner 24 does not obstruct the field of view of the subject 29, the scanner 24 does not enter the field of view of the subject 29 in all steps of a series of examinations. Therefore, the presence of the scanner 24 is not conscious, and the feeling of pressure applied can be greatly reduced.

  In the embodiment shown in the figure, the movement between the retracted state and the used state of the scanners 4 and 24 is performed only by rotational movement, but other moving means, for example, parallel movement may be combined and moved. In the embodiment, the motors 5 and 25 are used as the driving source for the movement of the scanners 4 and 24. However, other means such as a linear actuator may be used, or a configuration of manually moving the scanners may be used.

  In the embodiments, the present invention is applied to a ring-type positron ECT device. However, a ring-type single photon ECT device, a detector-facing positron ECT device, a detector-facing single-photon ECT device, an X-ray imaging device, etc. The present invention is also applicable to diagnostic imaging apparatuses. As described above, the present invention is not limited to the illustrated examples and includes various modifications.

  The present invention relates to an image diagnostic apparatus such as a positron ECT apparatus, a single photon ECT apparatus, an X-ray CT apparatus, or an X-ray imaging apparatus, and can be used particularly for an apparatus configuration that does not give a sense of anxiety and pressure to a subject. There is sex.

1 Examination table 2 Gantry 3 Leg 4 Scanner 5 Motor 6 Large gear 7 Small gear 8 Holding unit 9 Subject 10 Tunnel 11 Detector 21 Examination table 22 Gantry 23 Leg 24 Scanner 25 Motor 26 Large gear 27 Small gear 28 Holding unit 29 Examinee 30 Tunnel 31 Detector 32 Prop

Claims (7)

  In an image diagnostic apparatus provided with an examination table on which a subject is placed and a gantry, the gantry is a scanner, a holding unit that rotatably holds the scanner, and the scanner is rotated and out of the field of view of the subject. An image diagnostic apparatus comprising: a rotational movement means that moves to the position.   2. The diagnostic imaging apparatus according to claim 1, wherein the gantry according to claim 1 is a gantry constituting a ring-type positron ECT device.   2. The diagnostic imaging apparatus according to claim 1, wherein the gantry according to claim 1 is a gantry constituting a ring type single photon ECT apparatus.   2. The diagnostic imaging apparatus according to claim 1, wherein the gantry according to claim 1 is a gantry constituting a detector-facing positron ECT device.   2. The diagnostic imaging apparatus according to claim 1, wherein the gantry according to claim 1 is a gantry constituting a detector-facing single photon ECT device.   2. The diagnostic imaging apparatus according to claim 1, wherein the gantry according to claim 1 is a gantry constituting an X-ray CT apparatus.   In an X-ray imaging apparatus comprising an examination table on which a subject is placed, a support unit that supports an X-ray tube and an image receiving device, and a leg unit that holds the support unit, the leg unit rotates the support unit. An X-ray imaging apparatus comprising: a holding part that holds the support part; and a rotational movement unit that moves the support part out of the field of view of the subject while rotating.

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