A method for monitoring a health parameter in a person is disclosed. The method involves transmitting radio waves below the skin surface of a person and across a range of stepped frequencies, receiving radio waves on a two-dimensional array of receive antennas, the received radio waves including a reflected portion of the transmitted radio waves across the range of stepped frequencies, generating data that corresponds to the received radio waves, wherein the data includes amplitude and phase data, deriving data from at least one of the amplitude and phase data, and determining a value that is indicative of a health parameter in the person in response to the derived data.

A method for monitoring a health parameter in a person is disclosed. The method involves transmitting radio waves below the skin surface of a person and across a range of stepped frequencies, receiving radio waves on a two-dimensional array of receive antennas, the received radio waves including a reflected portion of the transmitted radio waves across the range of stepped frequencies, generating data that corresponds to the received radio waves, wherein the data includes amplitude and phase data, deriving data from at least one of the amplitude and phase data, and determining a value that is indicative of a health parameter in the person in response to the derived data.

An apparatus comprising at least two RIP measurement bands further comprises an electric power source arrangement, which excites simultaneously the at least two measurement bands with electric currents of different pseudo random variations, for making respiratory signals output by the at least two measurement bands unique. The apparatus also comprises a wireless transmitter arrangement, which transmits wirelessly respiratory information based on the respiratory signals output by the at least two measurement bands.

A system for evaluating the evolution of the structure of a subject's bone, the system including an implantable medical device including an implant body intended to be attached to the bone of the subject and at least one reflector coupled to the implant body, the reflector being configured to reflect an electromagnetic signal and being embedded in a surrounding tissue of the subject when the implant body is attached to the subject's bone and a calculation module configured to compute a parameter representative of the structure of the subject's bone, wherein the parameter is computed from a reflected signal corresponding to a reflection, on the reflector embedded in the surrounding tissue of the subject, of an excitation signal including at least one frequency in the characteristic frequency range of the reflector, the reflected signal being representative of at least one electrical property of the surrounding tissue.

A system for evaluating the evolution of the structure of a subject's bone, the system including an implantable medical device including an implant body intended to be attached to the bone of the subject and at least one reflector coupled to the implant body, the reflector being configured to reflect an electromagnetic signal and being embedded in a surrounding tissue of the subject when the implant body is attached to the subject's bone and a calculation module configured to compute a parameter representative of the structure of the subject's bone, wherein the parameter is computed from a reflected signal corresponding to a reflection, on the reflector embedded in the surrounding tissue of the subject, of an excitation signal including at least one frequency in the characteristic frequency range of the reflector, the reflected signal being representative of at least one electrical property of the surrounding tissue.

A vital sign detection device controls directivities of radio waves A and B toward an irradiation region of a subject to determine the vital signs of the subject. The first directivity is where the vital signs easily appear and the second directivity is where the vital signs are less likely to appear. Noise is reduced by taking a difference between information about a distance to the subject calculated on the basis of the radio wave A having the first directivity and information about a distance to the subject calculated on the basis of the radio wave B having the second directivity received by the receiver.

A vital sign detection device controls directivities of radio waves A and B toward an irradiation region of a subject to determine the vital signs of the subject. The first directivity is where the vital signs easily appear and the second directivity is where the vital signs are less likely to appear. Noise is reduced by taking a difference between information about a distance to the subject calculated on the basis of the radio wave A having the first directivity and information about a distance to the subject calculated on the basis of the radio wave B having the second directivity received by the receiver.

According to one embodiment, a sensor includes an element part, and a control circuit part. The element part includes first and second elements. Each of the first and second elements includes a first magnetic element and a first conductive member. The control circuit part includes a first current circuit, a differential circuit, and a phase detection circuit. The first current circuit is configured to supply a first current to the first conductive member. The differential circuit is configured to output a differential signal corresponding to a difference of a first signal and a second signal. The first signal corresponds to a change in a first electrical resistance of the first magnetic element of the first element, The second signal corresponds to a change in a second electrical resistance of the first magnetic element of the second element. The phase detection circuit is configured to perform a phase detection of the differential signal.

Disclosed are a system, method, and computer program product for generating pruned tractograms of neural fiber bundles. The method includes receiving scan data produced by diffusion imaging of at least a portion of a brain from a magnetic-resonance imaging (MRI) device. The method also includes generating an initial tractogram by mapping neuronal fiber pathways of a target fiber bundle of the scan data. The method further includes generating a density map using a set of tracts from the initial tractogram, identifying each tract that passes through a segment of the density map more than once, and setting a contribution of said tract to a unique tract count of the segment equal to a threshold pruning value. The method further includes generating a pruned tractogram by identifying a segment having a unique tract count less than or equal to the threshold pruning value and excluding the segment from the pruned tractogram.

The invention provides for a medical apparatus (100, 300, 400) comprising a subject support (102) configured for moving a subject (106) from a first position (124) to a second position (130) along a linear path (134). The subject support comprises a support surface (108) for receiving the subject. The subject support is further configured for positioning the subject support in at least one intermediate position (128). The subject support is configured for measuring a displacement (132) along the linear path between the first position and the at least one intermediate position. Each of the at least one intermediate position is located between the first position and the second position. The medical apparatus further comprises a camera (110) configured for imaging the support surface in the first position. Execution of machine executable instructions 116 cause the a processor (116) controlling the medical apparatus to: acquire (200) an initial image (142) with the camera when the subject support is in the first position; control (202) the subject support to move the subject support from the first position to the second position; acquire (204) at least one intermediate image (144) with the camera and the displacement for each of the at least one intermediate image as the subject support is moved from the first position to the second position; and calculate (206) a height profile (150, 600, 604) of the subject by comparing the initial image and the at least one intermediate image. The height profile is at least partially calculated using the displacement. The height profile is descriptive of the spatially dependent height of the subject above the support surface.