According to some aspects, a magnetic resonance imaging system capable of imaging a patient is provided. The magnetic resonance imaging system comprising at least one B0 magnet to produce a magnetic field to contribute to a B0 magnetic field for the magnetic resonance imaging system and a member configured to engage with a releasable securing mechanism of a radio frequency coil apparatus, the member attached to the magnetic resonance imaging system at a location so that, when the member is engaged with the releasable securing mechanism of the radio frequency coil apparatus, the radio frequency coil apparatus is secured to the magnetic resonance imaging system substantially within an imaging region of the magnetic resonance imaging system.

An examination apparatus for medical examination, in particular determination of a blood pressure, of an animal, in particular an animal having a paw, particularly preferably an animal from the subfamily of the Felinae. The examination apparatus has a sensor device for the optical examination of an arterial blood flow of the animal, in particular for performing a photoplethysmography. For this purpose, the sensor device has at least one emitter for the emission of electromagnetic radiation and at least one detector for the detection of the radiation emitted by the emitter. The sensor device preferably has several emitters and several detectors that are arranged in a periodic structure. Alternatively or additionally, the sensor device has a limiting device which defines a border of a detection region of the sensor device so that a distance of the border from the sensor device is more than 0.5 mm and/or less than 5 mm.

A system for assisting an x-ray operator with properly positioning a patient's body part to be x-rayed. The system uses a range sensor and/or a camera supported on an x-ray emitter to collect data about the patient's body part to be x-rayed. The data is transmitted to a processor and compared to a selected reference envelope or image. The processor provides an x-ray operator with a positive or negative notification based on its analysis of the collected data and the selected reference envelope or image. A negative notification indicates that the patient's body part needs to be adjusted. A positive notification indicates that the patient's body part is ready to be x-rayed.

A portable multi-lead electrocardiogram device includes a holding case, a signal processing module and three metal contacts. The signal processing module is located in the holding case. The metal contacts are located on an exterior surface of the holding case and are electrically connected to the signal processing module. The metal contacts are respectively a body contact, a left hand contact and a right hand contact. The device can measure the electrical activities of the heart beat from two different directions, which greatly improves detecting capability. Professional 12-lead electrocardiogram can also be performed by multiple times of measuring. This portable device allows patients with history of myocardial infarction to perform electrocardiogram test timely when feeling ill and to seek medical attention early.

An electronic device that may include a first surface configured to be pressed onto a subject; a second surface disposed opposite to the first surface; a sensor configured to acquire a pulse wave of the subject; and a controller configured to calculate an index based on a propagation phenomenon of the pulse wave acquired by the sensor. The second surface may comprise a pressing part configured to be pressed by the subject. The sensor may be disposed adjacent to the first surface relative to the second surface. Also, the controller may be configured to start calculating the index based on a determination that an amplitude of the pulse wave acquired in a predetermined time is at or greater than a predetermined level.

The present disclosure relates to noninvasive methods, devices, and systems for measuring various blood constituents or analytes, such as glucose. In an embodiment, a light source comprises LEDs and super-luminescent LEDs. The light source emits light at at least wavelengths of about 1610 nm, about 1640 nm, and about 1665 nm. In an embodiment, the detector comprises a plurality of photodetectors arranged in a special geometry comprising one of a substantially linear substantially equal spaced geometry, a substantially linear substantially non-equal spaced geometry, and a substantially grid geometry.

The present disclosure relates to noninvasive methods, devices, and systems for measuring various blood constituents or analytes, such as glucose. In an embodiment, a light source comprises LEDs and super-luminescent LEDs. The light source emits light at at least wavelengths of about 1610 nm, about 1640 nm, and about 1665 nm. In an embodiment, the detector comprises a plurality of photodetectors arranged in a special geometry comprising one of a substantially linear substantially equal spaced geometry, a substantially linear substantially non-equal spaced geometry, and a substantially grid geometry.

The present disclosure relates to noninvasive methods, devices, and systems for measuring various blood constituents or analytes, such as glucose. In an embodiment, a light source comprises LEDs and super-luminescent LEDs. The light source emits light at at least wavelengths of about 1610 nm, about 1640 nm, and about 1665 nm. In an embodiment, the detector comprises a plurality of photodetectors arranged in a special geometry comprising one of a substantially linear substantially equal spaced geometry, a substantially linear substantially non-equal spaced geometry, and a substantially grid geometry.

The present disclosure relates to noninvasive methods, devices, and systems for measuring various blood constituents or analytes, such as glucose. In an embodiment, a light source comprises LEDs and super-luminescent LEDs. The light source emits light at least wavelengths of about 1610 nm, about 1640 nm, and about 1665 nm. In an embodiment, the detector comprises a plurality of photodetectors arranged in a special geometry comprising one of a substantially linear substantially equal spaced geometry, a substantially linear substantially non-equal spaced geometry, and a substantially grid geometry.

A portable polysomnography apparatus comprises a unitary flexible structured pillow that is embedded with one or more sensors for data collection. The one or more sensors can comprise a tilt sensor that is configured to generate respiratory effort signals based on tilting of the head of the subject on the pillow. The one or more sensors can further be configured to generate ballistocardiogram signals from movement of the head of the subject caused by beating of the heart of the subject. The polysomnography apparatus can be advantageously sized and shaped to cause the sleeping subject to properly orient her head with respect to the sensors for optimal data collection while the subject is asleep.