JPS59222137A - Nmr-ct apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to an NMR-CT apparatus (nuclear magnetic resonance computed tomography apparatus).

(b) Conventional technology NMI (-In CT equipment, the resonance signal obtained from the object is extremely weak, so it is necessary to shield the entire object and the gantry where the magnet main body is housed. Therefore, conventional In this case, one box-shaped shield room surrounding the gantry and the subject is used, or the entire ceiling, walls, and floor of the installation room are shielded to make the entire installation room one shield room.

However, such conventional shielded rooms are problematic from the standpoint of patient throughput.

In other words, the time required for changing the patient into the shield room and setting it up is actually about the same as the scanning time (approximately 10 minutes), but in the past, shield processing was performed after setting the patient. This is because a series of tasks, including scanning, processing the data obtained, and composing an image, must be repeated for each patient, which is inefficient.

(c) Purpose This invention is designed to improve the shield room for patients by improving the shield room, considering that unlike X-ray CT devices, NMR-CT devices are safer for technicians and patients in terms of radiation exposure, and the gantry body can be accessed even during scanning. An object of the present invention is to provide an NMR-CT apparatus with improved processing capacity.

(D) Structure According to the present invention, the gantry has a structure in which each of the plurality of patient beds can insert a patient into one common scanning area, and the one common scanning area Among these shield rooms, the shield room containing the patient being scanned is in a closed state with a shielding effect, and the other shield rooms are in an open state to protect the patient. It is characterized in that the following settings are performed.

(E) Example In the example described below, one scanning area is shared by two patient beds and two shield rooms. In Figure 1, installation room 1 has an NMR-CT
A gantry 2 of the device is installed, and a magnet for generating a magnetic field is housed in the gantry 2, and a magnetic field is generated within the tunnel section 3 by this magnet. The inside of this tunnel portion 3 is the scanning area. Two patient beds 4 and 5 having the same structure and having the same function are arranged on the left and right sides of the country 2. These patient beds 4.5 are such that a patient 6 can be inserted into a common scanning area. That is, the tunnel portion 3 in which the scanning area is formed in the gantry 2 has a structure that penetrates left and right as shown in FIG. 3, and the patient 6 can be inserted into this tunnel portion 3 from either the left or the right. Shield room 7.8 also. Gantry 2
are formed on the left and right sides of the gantry 2 so as to commonly include the same. Each of these shield rooms 7.8 has a shield door 9.1.
0 and a shield i11.12 that closes the tunnel part 3 of the gantry 2 at both ends (Fig. 2A
, Bref@).

In FIG. 1, a patient 6 is being scanned in the shield room 5, and during this time, the patient 6 is being replaced and set in the shield room 4.

That is, at this time, as shown in FIG. 2A, the door IO of the shield room 8 is closed and the shield lid 12 is closed.
is closed, and the shield room 8 including the scanning area is completely shielded from others.

The shield room 7 is also completely shielded by closing the shield lid 12. Therefore, in this state, whatever is done in the shield room 7 does not affect the shield room 8. Therefore, while scanning is being performed in the shield room 8, the door 9 of the shield room 7 can be opened to change the patient 6 or to set the patient 6 on the patient bed 4.

In this way, while the scanning is being performed in the shielded room 8, the patient 6 is replaced and set up in the shielded room 7, and scanning in the shielded room 7 can be started immediately after the scanning in the shielded room 8 is completed. That is, when scanning is to be performed in the shield room 7, the shield lid 12 is opened as shown in FIG. Then, the shield ill is closed and the door 9 is closed to completely shield the scanning area from others. While scanning is performed, the door 10 is opened in the shield room 8, and the patient 6 is changed and set up.

In this way, patient setting and changing and scanning can proceed in parallel in the two shielded rooms 7.8, doubling the patient throughput.

FIG. 3 shows one specific example of the shield lid, in which a shield pad 13 is slidably held within the tunnel portion 3 of the cant 2. This shield pad 13 is connected to a suppressing portion 1 provided at the tip of each patient bed 4.5.
4.15 and moves from end to end of the tunnel section 3.

For example, when inserting the patient 6 into the tunnel section 3 together with the patient bed 4 in order to scan the patient 6 on the groove bed 4-to, press the patient bed 4 as shown in FIG. The shield hat 13 is pushed to the right by the section 14, and the shield band 13 is crimped to the right end. After the shield pad 13 is crimped, the patient bed 4 is fixed to the patient 6.
is moved back a little to set it to the optimal position. In the case of scanning a patient on the patient bed 5, the shield pad 13 is similarly pressed against the left end of the tunnel section 3 by the suppressing section 15. In FIG. 3, one shield pad 13 serves as two shields a11 and a12.

It should be noted that the specific structure of the shield lid may be of various types other than the structure shown in FIG. 3.

(F) Effects According to the present invention, patient scanning and patient setting and replacement can be performed in parallel at the same time, and patient processing capacity is greatly increased:

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of one embodiment of the present invention, Fig. 2 A and B are schematic diagrams for explaining the operation, and Fig. 3 is a schematic diagram of one embodiment of the shield lid.
FIG. 3 is a schematic perspective view showing two specific examples. l... Installation room 2... Gantry 3...
Tunnel section 4.5...Patient bed 6...
Patient 7.8...Shield room 9, ■
0...Shield door 11.12...Shield lid 13...Shield pad 14.15...Pushing section 2nd A No.2 Float 3

Claims (1)

[Claims] (1) A gantry with a structure in which each of the plurality of patient beds can insert a patient into one common scanning area, and a shield room containing the patient during scanning are in a closed state with a shielding effect, a plurality of shielded rooms formed to commonly include the one common scanning area, the other shielded rooms being open for patient setting; An NMR-CT apparatus characterized by the following.