Devices and techniques for magnetic detection of myocardial forces are generally described. In some examples, cardiac tissue may be cultured such that the cardiac tissue adheres to a first post and a second post. In further examples, a magnetometer may detect a change in a magnetic field resulting from a deflection of the first post in a first direction from a first position to a second position. In some other examples a signal corresponding to the change in the magnetic field may be generated. In still other examples, frequencies of the signal outside of a first frequency range may be excluded to produce a filtered signal. In various examples, the first frequency range may include frequencies associated with beating of cardiac tissue. In still further examples, a force exerted by the cardiac tissue may be determined based at least in part on the filtered signal.

Various embodiments disclosed herein comprise systems and methods to conform magnetic field sensors to a target geometry. In some examples, an apparatus is configured to conform to a target geometry. The apparatus comprises a sensor mount and a sensor array. The sensor mount comprises a flexible state for a first environmental condition and a rigid state for a second environmental condition. The sensor mount transitions from the flexible state to the rigid state when the first environmental condition transitions to the second environmental condition. The sensor mount transitions from the rigid state to the flexible state when the second environmental condition transitions to the first environmental condition. The sensor array is coupled to the sensor mount.

A magnetometer includes: a substrate; a diamond layer on the substrate, in which the diamond layer includes a defect sub-layer including multiple lattice point defects; a microwave field transmitter; an optical source configured to emit light including a first wavelength that excites the multiple lattice point defects from a ground state to an excited state; a photodetector arranged to detect photoluminescence including a second wavelength emitted from the defect sub-layer, in which the first wavelength is different from the second wavelength; and a magnet arranged adjacent to the defect sub-layer.

A magnetometer includes: a substrate; a diamond layer on the substrate, in which the diamond layer includes a defect sub-layer including multiple lattice point defects; a microwave field transmitter; an optical source configured to emit light including a first wavelength that excites the multiple lattice point defects from a ground state to an excited state; a photodetector arranged to detect photoluminescence including a second wavelength emitted from the defect sub-layer, in which the first wavelength is different from the second wavelength; and a magnet arranged adjacent to the defect sub-layer.

A medical apparatus includes circuitry configured to: acquire image information of an image of an organ in a living body; acquire biomagnetic field information from a biomagnetic field generated by the organ; a generate, from the image information, an organ model image of the organ two-dimensionally or three-dimensionally expressed; generate an electrocardiographic current image in which an over-time change in a current flowing through each position of the organ, acquired from the biomagnetic field information, is expressed by a change in a color attribute; and generate a composite image in which the organ model image and the electrocardiographic current image are superposed.

According to one embodiment of the invention, a magnetic sensor includes a first element part. The first element part includes a first magnetic element, first and s second structures, a first magnetic member, and a second magnetic member. A direction from the first magnetic layer toward the first counter magnetic layer is along a first direction. The first structure includes a first side magnetic layer. The second structure includes a second side magnetic layer. The first magnetic element is between the first structure and the second structure in a second direction crossing the first direction. The first magnetic element is separated from the first side magnetic layer and the second side magnetic layer. A direction from the first side magnetic layer toward the first magnetic member is along the first direction. A direction from the second side magnetic layer toward the second magnetic member is along the first direction.

The present invention provides a magnetic monitoring system for imaging, monitoring, scanning or mapping for brain or heart activity of subjects including children and adults, the system comprising of a magnetoencephalographic or magnetocardiographic system incorporating SQUID sensors for measuring brain activity or heart activity, the system including a plurality of Dewar helmets of variable sizes and shapes; and a plurality of monitoring interfaces; wherein the sensor system helmet is moveable by horizontal Dewar rotation. The sensor system includes configurations where the size and shape of helmets in the system may be different to accommodate different sized subjects for monitoring simultaneously.

The present invention provides a magnetic monitoring system for imaging, monitoring, scanning or mapping for brain or heart activity of subjects including children and adults, the system comprising of a magnetoencephalographic or magnetocardiographic system incorporating SQUID sensors for measuring brain activity or heart activity, the system including a plurality of Dewar helmets of variable sizes and shapes; and a plurality of monitoring interfaces; wherein the sensor system helmet is moveable by horizontal Dewar rotation. The sensor system includes configurations where the size and shape of helmets in the system may be different to accommodate different sized subjects for monitoring simultaneously.

According to one embodiment, a magnetic sensor includes a first sensor part, and a conductive member. The first sensor part includes a first magnetic element, a first side magnetic part, and a first counter side magnetic part. The conductive member includes a first corresponding portion along the first magnetic element. The first magnetic element includes a first magnetic layer, a first counter magnetic layer, a direction from the first magnetic layer toward the first counter magnetic layer being along a first direction, and a first intermediate magnetic layer located between the first magnetic layer and the first counter magnetic layer. The first side magnetic part includes a first side magnetic layer. The first counter side magnetic part includes a first counter side magnetic layer. The first intermediate magnetic layer is between the first side magnetic layer and the first counter side magnetic layer in a second direction.

Devices and systems as described herein is configured to sense a signal, such as a signal from an individual. In some embodiments, a signal is a magnetic field. In some embodiments, a source of a signal is an individual's organ, such as a heart muscle. A device or system, in some embodiments, comprises one or more sensors, such as an array of sensors configured to sense the signal. A device or system, in some embodiments, comprises a shield or portion thereof to reduce noise and enhance signal collection.