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Biological information monitoring apparatus and MRI apparatus

A technology of biological information and monitoring device, applied in the field of biological information monitoring device and magnetic resonance imaging device, can solve the problems of attenuation and difficulty in detecting the heartbeat and respiration of a subject

Pending Publication Date: 2020-09-22
CANON MEDICAL SYST COPRPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in a detection device using conventional radio waves, not only reflected waves from the subject but also reflected waves from various structures around the subject are received at the same time, so attenuation occurs, and it is difficult to stabilize with high reliability. Detect the heartbeat and respiration of the subject accurately

Method used

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  • Biological information monitoring apparatus and MRI apparatus
  • Biological information monitoring apparatus and MRI apparatus
  • Biological information monitoring apparatus and MRI apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0082] Hereinafter, a first embodiment of the present invention will be described based on the drawings.

[0083] figure 1 It is a block diagram showing the overall configuration of the living body information monitoring device 1 of the first embodiment. The living body information monitoring device 1 includes an antenna 10 and a living body information monitoring device main body 20 (hereinafter, simply referred to as the main body 20 ). The antenna 10 is a configuration of an antenna device (not shown). In the first embodiment, since the main body 20 of the living body information monitoring device basically has one antenna, the antenna device is constituted by one antenna. On the other hand, in other embodiments described later, there may be a case where the living body information monitoring device main body 20 has a plurality of antennas, and in this case, the antenna device is composed of a plurality of antennas.

[0084] The antenna 10 is placed close to the human bo...

no. 2 approach

[0116] Image 6 It is a block diagram showing the overall configuration of the living body information monitoring device 1 of the second embodiment. The living body information monitoring device 1 of the first embodiment basically has one antenna 10, whereas the living body information monitoring device 1 of the second embodiment has a transmitting antenna 10 (first antenna) and a receiving antenna 11 ( Second antenna) These are at least two antennas.

[0117] The living body information monitoring device main body 20 has substantially the same configuration as the first embodiment, and includes an RF signal generator 30 , a transmission circuit 40 , a coupling amount detection circuit 50 , and a displacement detection circuit 60 .

[0118] The main body 20 differs from the first embodiment in that the transmission circuit 20 of the second embodiment does not have a directional coupler (DC) 43 . The power amplifier (PA) 42 of the transmission circuit 20 and the transmission ...

no. 3 approach

[0134] Figure 10 It is a block diagram showing the overall configuration of the living body information monitoring device 1 of the third embodiment. The living body information monitoring device 1 of the third embodiment is a combination of the first embodiment and the second embodiment. Specifically, it is an embodiment configured such that a first mode corresponding to the first embodiment and a second mode corresponding to the second embodiment can be selected.

[0135] In the first mode, a high-frequency signal is input to the antenna 11, and based on the reflected signal from the antenna 11 (or the S11 parameter of the antenna 11), the heartbeat and respiratory movement of the subject are measured. On the other hand, in the second mode, a high-frequency signal is input to the antenna 10, and the heartbeat and respiration of the subject are measured based on the transmitted signal from the antenna 10 to the antenna 11 (or the S21 parameter from the antenna 10 to the ante...

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Abstract

In one embodiment, a biological information monitoring apparatus includes: an antenna assembly including at least one antenna, the antenna assembly being configured to be disposed close to an abject;a signal generator configured to generate a high-frequency signal; a coupling-amount detection circuit configured to detect coupling amount of near-field coupling due to an electric field between theobject and the at least one antenna by using the high-frequency signal; and a displacement detection circuit configured to detect a physical displacement of the object based on change in the couplingamount of near-field coupling.

Description

[0001] References to related applications [0002] This application is based on Japanese patent application 2019-044664 (filing date: March 12, 2019) and Japanese patent application 2020-001583 (filing date: January 8, 2020), and enjoys priority benefits from these applications. This application incorporates the entire content of this application by referring to these applications. technical field [0003] The embodiments disclosed in this specification and the drawings relate to a biological information monitoring device and a magnetic resonance imaging device. Background technique [0004] In imaging using a magnetic resonance imaging apparatus, collected data fluctuates according to human body motions caused by heartbeat (heartbeat), breathing, and the like. Therefore, for example, regarding the heartbeat, a method of affixing an electrocardiograph electrode to a human body, adjusting imaging timing using a signal output from the electrocardiograph, or correcting collect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B5/055A61B5/08A61B5/024
CPCA61B5/024A61B5/08A61B5/0004A61B5/0015A61B5/721A61B5/055A61B5/1126A61B5/05A61B5/7207G16H30/20G16H40/63G01R33/5612G01R33/34046G01R33/34038
Inventor 大石崇文富羽贞范
Owner CANON MEDICAL SYST COPRPORATION