Abstract:
A method for reconstructing a radioactive emission image of an overall volume having first and second volumetric regions, each volumetric region having respectively independent dynamic characteristics. The method comprises the following steps: a) obtaining radioactive emissions from the overall volume, including the volumetric regions, b) reconstructing an initial radioactive emission image of the volumetric region according to the radioactive emissions, c) segmenting the initial radioactive emission image to delineate the first and second volumetric regions, and d) separately reconstructing the first and the second volumetric regions according to the respectively independent dynamic characteristics.
Abstract:
A method may include collecting at least one analyte from within a body, ejecting the collected at least one analyte from the body through at least one dermal layer of the body, and receiving the ejected at least one analyte outside the body. A system may include a means for collecting at least one analyte from within a body, a means for ejecting the collected at least one analyte from the body through at least one dermal layer of the body, and a means for receiving the ejected at least one analyte outside the body.
Abstract:
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.
Abstract:
MRI guided cardiac interventional systems are configured to generate dynamic (interactive) visualizations of patient anatomy and medical devices during an MRI-guided procedure and may also include at least one user selectable 3-D volumetric (tissue characterization) map of target anatomy, e.g., a defined portion of the heart.
Abstract:
The application relates to a device for the iterative measurement of the circumference of an object, in particular a limb, comprising: a first longitudinal graduated measuring element having a first longitudinal direction, arranged to be placed alongside said object, in particular alongside said limb and defining a slide, a distal strap and a proximal strap each located in a plane substantially perpendicular to said longitudinal direction, and a slider engaging with said slide, linked to a second longitudinal graduated measuring element, said slider having a hole for the slide to pass through and being positioned between said distal strap and said proximal strap.
Abstract:
In certain embodiments, the invention relates to systems and methods for altering an image to compensate for variation in one or more physical and/or supervenient properties (e.g., optical absorption and/or scattering) in heterogeneous, diffuse tissue, thereby attenuating the effects of tissue waveguiding. The methods enable the proper identification of emission image regions that evidence waveguiding of electromagnetic radiation, and enables compensation of emission images for such waveguiding. The methods preserve the depth localization accuracy of the FMT approach and improve optical reconstruction in the targeted areas while eliminating spurious components of fluorescence from the acquired data set. Calibration methods for probe concentration mapping are also presented.
Abstract:
The invention concerns a device for non-invasive detection of malignant processes in human body. Diagnostically informative optical data are obtained by exposing human fingertips to pulsed electric fields strong enough to initiate atmospheric pressure corona discharge. The device that provides reliable information useful for detection of cancer-specific spectral signatures comprises a transparent electrode (4) to generate electric impulses, which is covered by a rigid transparent insulator (3); a flexible transparent membrane (2) positioned loosely on the free surface of the rigid insulator to facilitate the recombination processes; a dark opaque membrane (1) positioned on the transparent membrane to eliminate spurious light; an image-receiving camera (5) mounted beneath the optically transparent electrode and a computer to operate the device and process recorded data. Proper arrangement of 3 dielectric layers and the recording of images when thermodynamic equilibrium is already established, significantly improves the reproducibility of optical data.
Abstract:
A monitoring device includes a housing configured to be attached to a body of a subject. An optical emitter, optical detector, and sensor for measuring motion noise are located within the housing. Light transmissive material is in optical communication with the optical emitter and detector and is configured to deliver light from the optical emitter to one or more locations of the body of the subject and to collect light external to the housing and deliver the collected light to the detector. A signal processor is configured to receive and process signals produced by the optical detector and the motion noise sensor, and to remove noise from the signals produced by the optical detector. The signal processor may generate physiological parameters for the subject such as heart rate, blood flow, blood pressure, VO2max, heart rate variability, respiration rate, and blood gas/analyte level.
Abstract:
Systems to facilitate MRI-guided procedures are configured to generate proximity alerts for an MRI-guided procedure associated with at least one target site and/or at least one avoid zone.