Various sensors and methods of assembling sensors are described. In some embodiments, the sensor assembly includes a first end, a body portion, and a second end. The first end can include a neck portion and a connector portion and the second end can include a flap, a first component, a neck portion, and a second component. A method is also described for sensor folding. The method can include using a circuit with an attached emitter and a detector that is separated by a portion of the circuit. The method can also include folding the portion of the circuit such that a first fold is created through the emitter and folding the portion of the circuit such that a second fold is created such that the first fold and second fold form an angle.

A radiation therapy system includes a radiation source capable of generating a beam of radiation; a magnetic resonance imaging (MRI) apparatus comprising at least one radiofrequency detector coil; and an electrically grounded dielectric material between the radiation source and the radiofrequency detector coil for shielding the at least one radiofrequency detector coil from the beam of radiation. Also disclosed is a radiofrequency detector coil for a magnetic resonance imaging (MRI) apparatus sheathed at least in part by a dielectric material that is adapted to be electrically grounded.

A device for detecting spatial differences in fluid level changes in a tissue of a patient may include a support structure for securing the device to a body part of the patient, a processing element operably connected to the support structure, a wireless networking interface operably connected to the support structure and in communication with the processing element and an external computing device via a network, a first transmission module operably connected to the support structure and in communication with the processing element, a second transmission module and a third transmission module operably connected to the support structure and in communication with the processing element. When activated, the first transmission module transmits a first time varying magnetic field through the tissue of the patient. The second and third transmission modules, which are spatially separated from one another, receive first and second versions, respectively, of the first time varying magnetic field.

A bioimpedance measurement apparatus is provided. The bioimpedance measurement apparatus includes an electrode-side board that is configured to be connected to a current electrode in contact with a body and that includes a current source configured to apply a current to the current electrode. The electrode-side board may be connected via a cable to a board in which a processing circuit configured to process a signal acquired through the electrode-side board and/or a frequency signal generator configured to provide a predetermined frequency signal to the electrode-side board are located.

A blood glucose measurement device is disclosed. The present blood glucose measurement device comprises: a substrate; a first resonance sensor and a second resonance sensor arranged on the substrate; and a shield layer arranged below the second resonance sensor with respect to the direction from the second resonance sensor toward a subject.

A system includes a sensor applicator, a sensor control device arranged within the sensor applicator and including an electronics housing and a sensor extending from a bottom of the electronics housing, and a cap coupled to one of the sensor applicator and the sensor control device, wherein the cap is removable prior to deploying the sensor control device from the sensor applicator.

An interference signal measuring facility is in a differential voltage measuring system with a signal measuring circuit for measuring bioelectric signals with a number of useful signal paths, each with a sensor electrode. In an embodiment, the interference signal measuring facility has an additional sensor lead for each sensor electrode each of which is electrically connected to a ground connection of a supply lead of a sensor electrode; and a measuring amplifier circuit, for each sensor electrode connected to the additional sensor lead via an electrical resistor, configured to detect a change in electric potential occurring on the sensor lead and to determine an electrode reference interference signal therefrom. Also described is an interference signal compensation facility; a differential voltage measuring system; and a method for generation an interference-reduced biological measurement signal are described.

Embodiments disclosed herein directed to systems, apparatuses, and methods for the suppression of artifacts in non-invasive electromagnetic recordings. A data set, such as an electroencephalography (EEG) or magnetoencephalography (MEG) data set may be recorded by a number of sensors. The data set may include contributions from a signal of interest and from artifacts. The contribution of artifacts may be suppressed by splitting the data set into projected data and residual data based on a spatial model of the signal of interest. The projected data may contain contributions from the signal of interest and artifacts, while the residual data may primarily contain contributions from artifacts. The projected and residual data may be compared to remove or reduce the contribution of artifacts from the projected data.

A vascular assessment device includes an antenna unit and a fabric unit. The antenna unit includes a substrate, a transmitting antenna and a receiving antenna spaced apart disposed on the substrate, and a circuit module disposed on the substrate. The circuit module cooperates with the transmitting antenna to emit a carrier radio wave toward a fistula of a subject, and receives, via the receiving antenna, a return wave signal formed through reflection of the carrier radio wave. The fabric unit is sleeved on the antenna unit, and includes an isolating layer adapted to be disposed between the transmitting antenna and the skin above the fistula. The fabric unit has a dielectric constant not greater than 3.

A heart rate detection system includes a light source outputting a light beam, an acousto-optical sensing element having a crystalline material, and a light analysis module. The crystalline material has an input end, an output end and a sensing end. The input end is connected to the light source. The light beam emits into the input end, passes through the crystalline material, and emits out of the output end. An acoustic wave signal is received by the sensing end and changes a structure of the crystalline material. The light analysis module is connected to the output end and receives and analyzes the light beam that passes through the crystalline material.