JP2008029459A - Bio-magnetic field measuring instrument and measurement position setting method for bio-magnetic field measuring instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify an operation procedure for setting a measurement position of a test object in a bio-magnetic field measuring instrument, precisely adjust the position in the bio-magnetic field measuring instrument, reduce the occupation space of the measuring instrument and provide a bio-magnetic field measuring instrument attaining the issues and provide a measurement position setting method for the test object in the bio-magnetic field measurement. <P>SOLUTION: This bio-magnetic field measuring instrument includes a measuring means having fluxmeters for measuring magnetic fields generated from the test object, a stage for disposing the test object, a criterion predetermining a positional relation between a predetermined fluxmeter out of the fluxmeters and the stage, a reference position adjusting mechanism capable of horizontally and vertically driving for adjusting the test object and the reference position, a carrier mechanism carrying the stage to the measuring means, and a positioning mechanism disposing the carried stage in a predetermined position of the measuring means. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a biomagnetic field measurement that measures a weak magnetic field (magnetism, magnetic field) generated from the brain, heart, etc. of a living body using a superconducting quantum interference device (SQUID), which is a superconducting device. Related to the device.

  In particular, the present invention relates to a biomagnetic field measurement apparatus that enables easy alignment of a subject and a magnetometer.

  In the biomagnetic field measurement apparatus, since the SQUID magnetometer is installed in an insulating container such as an opaque dewar, it is difficult to accurately grasp the positional relationship between the subject and the magnetic field sensor.

  As a means for grasping the positional relationship, for example, in the technique related to the magnetoencephalograph described in Patent Document 1, a plurality of SQUID magnetometers are arranged at the bottom of a dewar whose outer shape is matched to the curvature of the head, and are arranged at a plurality of locations on the head. The magnetic field generated by energizing the installed magnetic field generating coil is measured by the SQUID magnetometer, and the output relationship between the magnetic field generated by the magnetic field generating coil and the SQUID magnetometer is simulated.

  By estimating the position of the magnetic field generating coil that minimizes the difference between the theoretical value and the measured value of the output voltage by the SQUID magnetometer, the position coordinates of the head portion where the magnetic field generating coil is arranged are specified.

  Further, in the technique related to the magnetocardiograph described in Patent Document 2, first and second markers are arranged on the surface of the sword-like projection to be examined and the cervical root, respectively, and a line connecting the first and second markers. However, the abdomen is placed at the bottom of the bottom of the cryocontainer so as to be along one direction in which the magnetometers are arranged inside the cryocontainer, and the arithmetic processing unit creates an image representing functional information related to cardiac activity from the magnetic field waveform signal The first marker is placed on the body surface of the xiphoid process, and the pixel size of the image representing the functional information matches the pixel size of the morphological image including the heart imaged by the imaging device And executing a process for creating a functional image having pixels of the same size as the morphological image, a process for matching the position of the first marker in the functional image, and a process for creating a composite image of the functional image and the morphological image Yes.

JP-A-4-303416 JP 2001-170018 A

  In the conventional biomagnetic field measurement apparatus, the measurement position setting method of the inspection object includes a step of aligning the inspection object and a reference for arranging the inspection object, and a step of aligning the reference and the reference of the measurement apparatus (measuring means) The operation procedure is complicated.

  In addition, the measurement position setting method described above requires an operator to work beside the inspection target in order to perform accurate position adjustment. Therefore, a space for the operator to arrange in addition to the inspection object is required inside the measuring apparatus.

  Accordingly, an object of the present invention is to simplify an operation procedure related to setting of a measurement position of an inspection object in a biomagnetic field measurement apparatus. In addition, to achieve accurate position adjustment in the biomagnetic field measurement device, to reduce the space occupied by the measurement device.

  And it is providing the measuring position setting method of the test object in the biomagnetic field measuring device which achieved said subject, and biomagnetic measurement.

  The configuration of the present invention for achieving the above object is as follows.

A measuring means with a magnetometer;
A stage for placing inspection objects;
A standard for determining the positional relationship between the measuring means and the stage;
A reference / inspection object position adjusting mechanism for aligning the measurement position of the inspection object with the reference;
A stage transport mechanism for transporting the stage to the measuring means;
A stage positioning mechanism is provided for determining the stage at a predetermined position of the measuring means.

  According to the present invention, it is possible to simplify the operation procedure related to the setting of the measurement position of the inspection object in the biomagnetic field measurement apparatus, and at the same time, it is possible to realize accurate position adjustment. Furthermore, the space occupied by the measuring device can be reduced.

  A typical configuration of the biomagnetic field measurement apparatus of the present invention will be described.

  The biomagnetic field measurement apparatus of the present invention includes a magnetic shield room, a SQUID magnetometer for measuring a magnetic field to be inspected (a magnetometer of a measuring means), a cryocontainer that cools the SQUID magnetometer, and the position of the cryocontainer. Gandries to be fixed, a refrigerant supply route for supplying refrigerant to the cryogenic container, a gas exhaust route for discharging the gas evaporated from the refrigerant in the cryogenic container to the outside of the magnetic shield room, and the inspection object to the measurement position And a reference plane (reference) for determining the arrangement of the inspection object.

  The magnetic shield room has a minimum shape that can accommodate the stage.

  The reference marker arranged on the reference plane (reference) is arranged at the intersection of the reference plane (reference) and the perpendicular line drawn from the SQUID magnetometer to the reference plane (reference).

  In order to match the measurement position of the reference marker and the inspection object, the stage is equipped with a stage position adjustment mechanism (x-axis direction reference / inspection object position adjustment mechanism) and stage position adjustment mechanism (y-axis direction reference / inspection object position adjustment mechanism). And a stage position adjustment mechanism (z-axis direction reference / inspection object position adjustment mechanism).

  The stage position adjustment mechanism (reference / inspection object position adjustment mechanism) has position adjustment drive means for moving the position in the x-axis direction, the y-axis direction, and the z-axis direction.

  The reference plane (reference) is made of a highly light-transmitting material such as an acrylic plate (nonmagnetic material), for example. The stage is transported using a stage transport mechanism.

  A stage conveyance mechanism is comprised from a stage, a slide rail, and a bearing, for example. The stage is transported in the stage driving direction (reference in the y-axis direction / inspection position adjusting mechanism) by the stage transport mechanism.

  The stage positioning mechanism includes, for example, a stage positioning pin and a stage positioning groove. The stage positioning mechanism is desired to be configured to reduce the displacement in the y-axis direction (in other words, vibration in the y-axis direction).

  In order to realize the above configuration, an elastic material (for example, rubber or sponge) that absorbs an impact at the time of collision is used for the stage positioning pin. Moreover, an adhesive tape is used for the contact surface of the stage positioning groove with the stage positioning pin.

  After transporting the inspection object to the measurement position, it is possible to correct the positional deviation in the x-axis direction using a stage position adjustment mechanism (reference in the x-axis direction / inspection object position adjustment mechanism). At the same time, it is possible to correct the positional deviation in the y-axis direction using the stage position adjusting mechanism (reference in the y-axis direction / inspection position adjusting mechanism).

  The reference plane (reference) is attached to the stage on which the inspection object is arranged. Further, the reference plane (reference) includes a reference position adjusting mechanism for facilitating the arrangement of the inspection object. Specifically, the reference plane (reference) includes a reference plane positioning mechanism and a reference plane drive mechanism.

  The reference plane positioning mechanism has a function of maintaining the parallelism between the reference plane and the stage. As one means for realizing this function, for example, an L-shaped angle can be used.

  The reference plane positioning mechanism 33 is directly attached to the stage. This reference plane (reference) is attached to the reference plane positioning mechanism so that the inspection object is disposed between the reference plane and the stage.

  However, the reference plane (reference) is provided with a reference plane drive mechanism so that the inspection object can be easily arranged on the stage. Thus, the position of the reference plane (reference) can be adjusted.

  Next, the contents of the present invention will be described based on examples.

  As shown in FIG. 1, the biomagnetic field measurement apparatus of the present invention includes a magnetic shield room 1, a SQUID magnetometer 12 for measuring a magnetic field to be examined, a cryogenic container 5 for cooling the SQUID magnetometer 12, and a low temperature. Gandry 6 for fixing the position of the container 5, a refrigerant supply route 7 for supplying the refrigerant to the low temperature container 5, and a gas exhaust route for discharging the gas evaporated from the refrigerant in the low temperature container 5 to the outside of the magnetic shield room 1. 8, a stage 9 for transporting the inspection object 11 to the measurement position, and a reference plane 10 (reference) for determining the arrangement of the inspection object 11.

  The magnetic shield room 1 has a minimum shape that can accommodate the stage 9. As a result, the space of the biomagnetic measurement device can be reduced.

  The reference marker 10a arranged on the reference plane 10 (reference) is a perpendicular line drawn from the reference plane 10 (reference) and the SQUID magnetometer 12 to the reference plane 10 (reference) (that is, the normal of the reference plane (z-axis direction)). 13) at the intersection.

  In order to align the reference marker 11a with the measurement position 11a of the inspection object, the stage 9 includes a stage position adjustment mechanism (x-axis direction reference / inspection object position adjustment mechanism) 17, a stage position adjustment mechanism (y-axis direction reference / inspection object). A position adjustment mechanism) 16 and a stage position adjustment mechanism (reference / inspection position adjustment mechanism in the z-axis direction) 18.

  Since the operator adjusts the measurement position 11a of the inspection object while visually confirming from the reference plane 10 (reference), it is desirable that the position of the inspection object can be confirmed through the reference plane 10 (reference).

  Therefore, the reference plane 10 (reference) is made of a material having high light transmittance such as an acrylic plate. In particular, the colorless and transparent acrylic plate can easily confirm the position of the inspection object.

  Since the biomagnetic field measuring apparatus measures a magnetic field, it is desirable to use a non-magnetic material for the reference plane 10 (reference). In the case of materials other than non-magnetic materials, measures that do not affect the magnetic field measurement to be inspected, for example, the reference plane 10 (reference) is removed during the magnetic field measurement, and the magnetic field measurement is performed.

  After adjusting the position of the inspection object 11, the inspection object is transported to the measurement position. The stage 9 is transported using a stage transport mechanism 14. The stage transport mechanism 14 includes, for example, a stage 9, a slide rail 14a, and bearings (14b to 14e).

  The stage transport mechanism 14 is desired to have a configuration in which the position of the stage 9 is reduced in the x-axis direction (in other words, vibration in the x-axis direction).

  Further, in order to transport the inspection object without impact, the stage transport mechanism 14 is desired to have a configuration in which the displacement in the z-axis direction (in other words, vibration in the z-axis direction) is reduced. The stage 9 is transported in the stage drive direction (y-axis direction) 20 by the stage transport mechanism 14.

  At this time, the inspection object 11 and the reference plane 10 (reference) do not collide with the cryogenic container 5. When the operator transports the stage 9 to the stage positioning mechanism 15, the inspection target is placed at the measurement position. In the figure, the inspection object is carried from the foot to the measurement position, but may be carried from the head to the measurement position.

The desk 19 mounts the computer 3 and the monitor 4. The signal of the SQUID magnetometer 12 is sent to the drive circuit 2 via the drive circuit signal cable 21. The signal of the drive circuit 2 is sent to the computer 3 via the measurement data transfer cable 22.
As shown in FIG. 2, the inspection object is placed at the measurement position. At this time, the measurement position 11a to be inspected is on the same straight line as the perpendicular line drawn from the SQUID magnetometer 12a at the specific position to the reference plane 10 (reference), that is, the normal line (z-axis direction) 13) of the reference plane (reference). Placed in.

  The stage positioning mechanism 15 that determines the accuracy and reproducibility of alignment includes, for example, a stage positioning pin 9a and a stage positioning groove 15a.

  The stage positioning mechanism 15 is desired to have a configuration that reduces the displacement in the y-axis direction (in other words, vibration in the y-axis direction). In order to realize the above configuration, an elastic material (for example, rubber or sponge) that absorbs an impact at the time of collision is used for the stage positioning pin 9a.

  Moreover, an adhesive tape is used for the contact surface of the stage positioning groove with the stage positioning pin. A method using a throwing effect can also be used.

  As shown in FIG. 3, the inspection object 11 mounted on the stage 9 is arranged at the measurement position.

  The measurement position 11a to be inspected, which has been adjusted in advance to the reference marker 10a on the reference plane 10 (reference), is transported by the stage transport mechanism, and is a perpendicular drawn from the SQUID magnetometer 12a at the specific position to the reference plane 10 (reference). That is, they are arranged on the same straight line as the normal line (z-axis direction) 13 of the reference plane (reference).

  The reference marker 10 a on the reference plane 10 (reference) matches the normal line (z-axis direction) 13 of the reference plane (reference) by the stage positioning mechanism 15.

  Therefore, the measurement position 11a to be inspected coincides with the normal line (z-axis direction) 13 of the reference plane (reference). In this case, the accuracy and precision of the position in the x-axis direction are determined by the stage positioning mechanism 15.

  Further, it is possible to correct the positional deviation in the y-axis direction by using the stage position adjusting mechanism (reference in y-axis direction / inspection object position adjusting mechanism) 16.

  Furthermore, the reference plane size (y-axis direction) 10b is preferably such that the abdomen is covered from the head of the inspection object 11 in order to prevent the inspection object 11 from colliding with the bottom surface of the cryogenic container 5. Alternatively, the abdomen may be covered from the jaw of the inspection object 11.

  As shown in FIG. 4, the inspection object 11 mounted on the stage 9 is disposed at the measurement position.

  The measurement position 11a to be inspected, which has been adjusted in advance to the reference marker 10a on the reference plane 10 (reference), is transported by the stage transport mechanism, and is a perpendicular drawn from the SQUID magnetometer 12a at the specific position to the reference plane 10 (reference). That is, they are arranged on the same straight line as the normal line (z-axis direction) 13 of the reference plane (reference).

  The reference marker 10 a on the reference plane 10 (reference) matches the normal line (z-axis direction) 13 of the reference plane (reference) by the stage positioning mechanism 15.

  Therefore, the measurement position 11a to be inspected coincides with the normal line (z-axis direction) 13 of the reference plane (reference). In this case, the accuracy and precision of the position in the x-axis direction are determined by the stage transport mechanism 14.

  Further, it is possible to correct the positional deviation in the x-axis direction by using the stage position adjustment mechanism (x-axis direction reference / inspection object position adjustment mechanism) 17.

  Furthermore, the size (x-axis direction) 10c of the reference plane (reference) is equal to or less than the width of the stage (x-axis direction) at which the inspection object 11 can be sufficiently arranged to prevent the inspection object 11 from colliding with the bottom surface of the cryogenic vessel 5. Is desirable.

  As shown in FIG. 7, the reference plane 10 (reference) is attached to the stage 9 on which the inspection object 11 is arranged.

  Further, the reference plane 10 (reference) is provided with a reference position adjusting mechanism for facilitating the arrangement of inspection objects. Specifically, the reference plane 10 (reference) includes a reference plane positioning mechanism 30, a reference plane positioning mechanism 33, a reference plane driving mechanism 34, and a reference plane driving mechanism 32.

  The reference plane positioning mechanism 30 has a function of maintaining the parallelism between the reference plane 10 and the stage. As one means for realizing this function, for example, an L-shaped angle can be used.

  One or more reference plane positioning mechanisms 30 are attached to the reference plane positioning mechanism 33. The reference plane positioning mechanism 33 is directly attached to the stage. Alternatively, it is indirectly attached to the stage via the reference plane drive mechanism 32.

  The reference plane 10 (reference) is attached to the reference plane positioning mechanism 30 so that the inspection target is arranged between the stage 9 and the reference plane. However, the reference plane 10 (reference) is provided with a reference plane drive mechanism 34 so that the inspection object can be easily arranged on the stage.

  As a result, the position of the reference plane 10 (reference) can be adjusted in the reference plane driving direction 29. Further, the position of the reference plane 10 (reference) in the reference plane drive direction (x-axis direction) 31 can be adjusted by the reference plane drive mechanism 32.

  Further, the reference plane 10 (reference) may include a reference position adjustment mechanism in the z-axis direction. In order to measure the biomagnetic field to be examined, it is desirable that the reference plane positioning mechanism 30, the reference plane positioning mechanism 33, the reference plane drive mechanism 34, and the reference plane drive mechanism 32 are made of a nonmagnetic material.

  As shown in FIG. 5, the reference marker on the reference plane 10 (reference) is composed of a laser 25 coaxial with the normal line of the reference plane (reference).

  The reference marker on the reference plane 10 (reference) is composed of the reference plane 10 (reference), a laser oscillator 24 attached to the reference plane 10 (reference), and a reflector 23. The operator adjusts the position of the laser 25 coaxial with the normal of the reference plane (reference) to the measurement position 11a to be inspected.

  This position adjustment is in the y direction.

  In order to measure the biomagnetic field to be examined, it is desirable that the reflector 23 and the laser oscillator 24 be made of a specific magnetic material. The laser oscillator 24 is used when aligning the inspection object, and is not used when measuring the magnetic field of the inspection object.

  As shown in FIG. 6, the reference marker on the reference plane 10 is composed of a laser 28 coaxial with the normal of the reference plane.

  The reference marker on the reference plane 10 includes a reference plane 10, a laser oscillator 27 attached to the reference plane 10, and a reflection plate 26. The operator adjusts the position of the laser 28 coaxial with the normal of the reference plane to the measurement position 11a to be inspected.

  This position adjustment is in the x direction. By combining the position adjustment in the x direction and the y direction, the position of the measurement position 11a to be inspected accurately can be adjusted.

  In order to measure the biomagnetic field to be examined, it is desirable that the reflector 26 and the laser oscillator 27 are made of a specific magnetic material. The laser oscillator 27 is used when aligning the inspection object, and is not used when measuring the magnetic field of the inspection object.

  As shown in FIG. 8, the magnetic shield room 1 has a sealed shape.

  In this case, the stage 9 that transports the inspection object 11 is transported in the stage drive direction (x-axis direction) 35 by the rails 1 and 2 (36a and 36b).

  In the magnetic shield room 1 shown in FIG. 11, the stage is transported and moved in the x-axis direction in the stage driving direction.

  As shown in FIG. 9, the size (y-axis direction) 10b of the reference plane (reference) is preferably such that the operator 37 can confirm the measurement position 11a to be inspected with a finger. Specifically, a size (y-axis direction) equal to the measurement range of the magnetometer is desirable.

  As shown in FIG. 10, the size (x-axis direction) 10c of the reference plane (reference) is preferably a dimension that allows the operator 37 to confirm the measurement position a to be inspected with a finger. Specifically, a size equal to the measurement range of the magnetometer (x-axis direction) is desirable.

  In the above embodiment, the measuring means is a single magnetometer. The measuring means can have one or more magnetometers. In the reference plane (reference), a predetermined structure among one or a plurality of magnetometers is connected to form an intersection so that the positions of the remaining magnetometers are aligned.

  Finally, the above-described embodiments are summarized from the viewpoint of the measurement position setting method of the biomagnetic field measurement apparatus.

  First, a step of placing the inspection object on the stage provided with the measuring means is executed by the operation of the driver. Subsequently, a step is performed in which a reference plane (reference) in which the positional relationship between the measurement means and the stage is determined in advance is arranged on the inspection object using the reference position adjustment mechanism by the operation of the vehicle operator.

  Thereafter, a step of adjusting the position of the inspection object on the reference plane (reference) using the reference / inspection object position adjusting mechanism is performed by the operation of the operator. Subsequently, a step of transporting the stage to the measuring means is executed by the operation of the driver.

  Furthermore, a step of positioning and arranging the stage using a stage positioning mechanism at a predetermined position of the measuring means is executed by the operation of the operator. By executing this measurement position setting method, accurate measurement is performed by the biomagnetic field measurement apparatus.

The figure which showed the example of a whole structure of the biomagnetic field measuring apparatus of 1st Example in this invention. In particular, an example of adjusting the position of the inspection object outside the magnetic shield room. The figure which showed the example of a whole structure of the biomagnetic field measuring apparatus of 1st Example in this invention. The figure explaining the state which has arrange | positioned the test object mounted in a stage in a measurement position especially. The figure explaining the state which has arrange | positioned the test object mounted in a stage in the measurement position in 1st Example of this invention. In particular, a diagram (y-z plane) illustrating the positional relationship between a SQUID magnetometer at a specific position, a marker on a reference plane, and a measurement position of an inspection target. The figure explaining the state which has arrange | positioned the test object mounted in a stage in the measurement position in 1st Example of this invention. In particular, a diagram (xz plane) illustrating the positional relationship between a SQUID magnetometer at a specific position, a marker on a reference plane, and a measurement position of an inspection target. The figure which showed the structural example of the reference plane of the biomagnetic field measuring device of 2nd Example in this invention, and the figure explaining the state which has arrange | positioned the test object mounted in a stage in a measurement position. In particular, a diagram (y-z plane) illustrating the positional relationship between the SQUID magnetometer at a specific position, the laser 1 coaxial with the normal of the reference plane, and the measurement position of the inspection object. The figure which showed the structural example of the reference plane of the biomagnetic field measuring device of 2nd Example in this invention, and the figure explaining the state which has arrange | positioned the test object mounted in a stage in a measurement position. In particular, a diagram (xz plane) illustrating a positional relationship among a SQUID magnetometer at a specific position, a laser 2 coaxial with the normal of a reference plane, and a measurement position of an inspection target. The figure explaining the reference plane attached to the stage in the 1st example of the present invention. In particular, a diagram illustrating the driving direction of the reference plane (xz plane). The figure which showed the example of whole structure of the biomagnetic field measuring apparatus of the 3rd Example in this invention. The figure explaining the state which has arrange | positioned the test object mounted in a stage in the measurement position in the example which implemented especially the position adjustment of the test object inside the magnetic shield room. The figure which showed the structural example of the reference plane of the biomagnetic field measuring device of 4th Example in this invention, and the figure explaining the state which has arrange | positioned the test object mounted in a stage in a measurement position. In particular, a diagram illustrating the size of the reference plane (yz plane). The figure which showed the structural example of the reference plane of the biomagnetic field measuring device of 4th Example in this invention, and the figure explaining the state which has arrange | positioned the test object mounted in a stage in a measurement position. In particular, a diagram illustrating the size of the reference plane (xz plane). The figure which showed the example of another magnetic shield room in the biomagnetic field measuring apparatus of 1st Example in this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Magnetic shield room, 1a ... Magnetic shield room floor, 2 ... Drive circuit, 3 ... Computer, 4 ... Monitor, 5 ... Low temperature container, 6 ... Gantry, 7 ... Refrigerant supply route, 8 ... Gas exhaust route, 9 ... Stage, 9a ... Stage positioning pin, 10 ... Reference plane (reference), 10a ... Reference marker, 10b ... Reference plane size (y-axis direction), 10c ... Reference plane size (x-axis direction), 11 ... Inspection object, 11a ... Measurement position of inspection object, 12 ... SQUID magnetometer, 12a ... SQUID magnetometer at a specific position, 13 ... Normal of reference plane (z-axis direction), 14 ... Stage transport mechanism, 14a ... Slide rail, 14b ... Bearing 1, 14c ... Bearing 2, 14d ... Bearing 3, 14e ... Bearing 4, 15 ... Stage positioning mechanism, 15a ... Stage positioning groove, 16 ... ST Position adjustment mechanism (y-axis direction), 17 ... stage position adjustment mechanism (x-axis direction), 18 ... stage position adjustment mechanism (z-axis direction), 19 ... desk, 20 ... stage drive direction (y-axis direction), 21 DESCRIPTION OF SYMBOLS ... Drive circuit signal cable, 22 ... Measurement data transfer cable, 23 ... Reflecting plates 1, 24 ... Laser oscillator (first laser), 25 ... Laser 1 (first laser) coaxial with the normal of the reference plane, 26 Reflector 2, 27 ... Laser oscillator (second laser) 28 ... Laser 2 (second laser) coaxial with normal of reference plane, 29 ... Reference plane drive direction 1, 30 ... Reference plane positioning mechanism 1 31 ... reference plane drive direction 2 (x-axis direction), 32 ... reference plane drive mechanism 2, 33 ... reference plane positioning mechanism 2,34 ... reference plane drive mechanism 1, 35 ... stage drive direction (x-axis direction), 36a ... Rail 1, 36b ... Le 2, 37 ... operator.

Claims (9)

A measuring means with a magnetometer;
A stage for placing inspection objects;
A standard for determining the positional relationship between the measuring means and the stage;
A reference / inspection object position adjusting mechanism for aligning the measurement position of the inspection object with the reference;
A stage transport mechanism for transporting the stage to the measuring means;
A biomagnetic field measurement apparatus comprising a stage positioning mechanism for determining the stage at a predetermined position of the measuring means. The biomagnetic field measurement apparatus according to claim 1,
The biomagnetic field measurement apparatus according to claim 1, wherein the reference / inspection object position adjustment mechanism includes a position adjustment drive unit that drives in a horizontal direction and a vertical direction. The biomagnetic field measurement apparatus according to claim 1,
The biomagnetic field measurement apparatus according to claim 1, wherein the reference is positioned between the inspection object and the stage and is provided horizontally with no inclination with respect to the stage. The biomagnetic field measurement apparatus according to claim 3, wherein
The measuring means comprises one or more magnetometers;
The reference is located below a predetermined one of the one or more magnetometers,
The biomagnetic field measuring apparatus according to claim 1, wherein the reference is provided at an intersection where a perpendicular line lower than a predetermined one of the one or a plurality of magnetometers intersects. In the biomagnetic field measurement apparatus according to any one of claims 1 to 4,
The biomagnetic field measuring apparatus characterized in that the reference is made of a nonmagnetic material. In the biomagnetic field measurement apparatus according to any one of claims 1 to 5,
The biomagnetic field measuring apparatus according to claim 1, wherein the reference is made of a highly light-transmitting material such as an acrylic plate. The biomagnetic field measurement apparatus according to claim 6,
A perpendicular marker drawn from the position of a predetermined magnetometer among the one or more magnetometers provided in the measuring means is provided with a reference marker at an intersection where the reference is provided horizontally,
The biomagnetic field measurement apparatus, wherein the reference marker is composed of a laser irradiated from one or a plurality of laser light sources provided with the reference or the stage or a magnetometer. The biomagnetic field measurement apparatus according to claim 7,
The biomagnetic field characterized in that the reference marker is composed of a laser coaxial with a perpendicular line drawn down to the reference and provided horizontally from a position of a predetermined magnetometer among the one or more magnetometers Measuring device. A step of placing an inspection object on a stage provided with a measuring means by operation;
A step of arranging a reference for determining a positional relationship between the measuring unit and the stage in advance on the inspection object;
Adjusting the inspection object relative to the reference by operation;
Transporting the stage to the measuring means by operation;
And a step of placing the stage at a predetermined position of the measuring means by an operation, and a measuring position setting method for a biomagnetic field measuring apparatus.

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