A surgical instrument navigation system is provided that visually simulates a virtual volumetric scene of a body cavity of a patient from a point of view of a surgical instrument residing in the cavity of the patient. The surgical instrument navigation system includes: a surgical instrument; an imaging device which is operable to capture scan data representative of an internal region of interest within a given patient; a tracking subsystem that employs electro-magnetic sensing to capture in real-time position data indicative of the position of the surgical instrument; a data processor which is operable to render a volumetric, perspective image of the internal region of interest from a point of view of the surgical instrument; and a display which is operable to display the volumetric perspective image of the patient.

A computer-implemented method and system includes accessing neurophysiological and neurovascular data recorded during sleep. A function mapping is executed from said neurophysiological and neurovascular data to a target that is one of a glymphatic flow marker, a molecular analysis marker of neurodegeneration, or a neuroimaging marker of neurodegeneration. A target prediction model is output based on the function mapping. The target prediction model can receive new neurophysiological and neurovascular data and output a predicted marker of neurodegeneration.

A device and method of using the device to detect the presence and composition of clots and other target objects in a circulatory vessel of a living subject is described. In particular, devices and methods of detecting the presence and composition of clots and other target objects in a circulatory vessel of a living subject using in vivo photoacoustic flow cytometry techniques is described.

Closed cavity adjustable sensor mount systems include a sealed, closed cavity enclosing a sensor and forming a closed cavity sensor assembly. The closed cavity sensor assembly may be tilted and/or translated relative to a platform in order to adjust the orientation of the sensor to align it with an imaging optical axis. Following alignment, the closed cavity sensor assembly may be permanently or reversibly fixed in place. The closed cavity adjustable sensor mount systems may be part of medical imaging systems such as endoscopic imaging systems and/or open field imaging systems.

Dynamic contrast enhanced MRI data and dynamic susceptibility contrast MRI data for a volume of the patient's body including a tumor are used in order to identify the risk of lymph node metastasis. A volume of interest enclosing the tumor is identified and the MRI data for the volume of interest is processed in order to identify one or more parameters relating to the transverse relaxation rate and/or to dynamic changes in the transverse relaxation rate. A comparison is made to previously obtained similar parameters for other patients having similar tumors that are either known to exhibit lymph node metastasis or are known not to exhibit lymph node metastasis in order to determine if the MRI data indicates that the patient has a tumor at greater risk of exhibiting lymph node metastasis or a tumor with a lesser risk of exhibiting lymph node metastasis.

A surgical instrument navigation system is provided that visually simulates a virtual volumetric scene of a body cavity of a patient from a point of view of a surgical instrument residing in the cavity of the patient. The surgical instrument navigation system includes: a surgical instrument; an imaging device which is operable to capture scan data representative of an internal region of interest within a given patient; a tracking subsystem that employs electro-magnetic sensing to capture in real-time position data indicative of the position of the surgical instrument; a data processor which is operable to render a volumetric, perspective image of the internal region of interest from a point of view of the surgical instrument; and a display which is operable to display the volumetric perspective image of the patient.

An earpiece module includes a housing configured to be attached to an ear of a person, a first audio sensor within the housing configured to detect auscultatory sounds from an ear canal of the ear and generate a physiological information signal from the auscultatory sounds, and a second audio sensor within the housing and oriented in a direction towards an outside environment of the person. The second audio sensor is configured to detect sounds external to the person including voice sounds and footstep sounds, and to generate an environmental information signal from the external sounds. A processor is configured to receive the physiological information signal and the environmental information signal, process the external sounds in the physiological information signal and the environmental information signal to reduce the voice sounds and the footstep sounds from the physiological information signal and generate a cleaner physiological information signal.

The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods and compositions for making and using the compounds, methods incorporating the compounds, and kits incorporating the compounds. The disclosure also relates to compositions for incorporating the compounds as used for the targeted imaging of tumors. Conjugation of the amino acid linking groups increase specificity and detection of the compound. Methods and compositions for use thereof in diagnostic imaging are contemplated.

A system includes an earpiece and a telecommunications device in communication with the earpiece. The earpiece includes a power source, a processor configured to process at least one algorithm stored within the earpiece, and an optical sensor. The optical sensor includes at least one optical emitter configured to direct optical energy to a region of an ear of a subject wearing the earpiece and at least one optical detector configured to sense absorbed, scattered, and/or reflected optical energy emanating from the ear region. The telecommunications device is configured to modify the at least one algorithm, to download additional algorithms to the earpiece, and to activate and deactivate the optical sensor.

Wearable apparatus for monitoring various physiological and environmental factors are provided. Real-time, noninvasive health and environmental monitors include a plurality of compact sensors integrated within small, low-profile devices, such as earpiece modules. Physiological and environmental data is collected and wirelessly transmitted into a wireless network, where the data is stored and/or processed.