Abstract: Described herein are apparatus and associated methods for the generation of at least one user adjustable, accurate, real-time, virtual surgical reference indicium. A method includes recording an image of an eye and producing a real-time multidimensional visualization using the recorded image. The method also includes determining at least one distinct visible feature within a patient specific pre-operative still image and producing the real-time, virtual surgical reference indicium in conjunction with the patient specific pre-operative still image. The method further includes aligning the real-time, virtual surgical reference indicium with the real-time, multidimensional visualization of the eye using the at least one distinct visible feature.

Abstract: A method of imaging to permit calculation of left:right striatum uptake ratios is provided, and the degree of asymmetry used to assist in the diagnosis of neurological diseases. Also provided are a method of diagnosis, method of patient selection, and method of therapy monitoring using the imaging method, and software tools for use in the method.

Abstract: A magnetic resonance imaging (MRI) radio frequency (RF) receive coil assembly is disclosed. The assembly comprises a deformable pad which comprises an array of tracking coils disposed on a surface of the deformable pad, each tracking coil corresponding to a grid point of the surface and configured to provide information of a position of the grid point. One or more RF receive coils are disposed within the deformable pad.

Abstract: A control device for an imaging system includes a video signal acquisition unit, a photometric unit, and a luminance control unit. The video signal acquisition unit is configured to acquire a video signal obtained by taking an image of fluorescence radiated from a subject under excitation by an excitation light that is emitted onto the subject. The photometric unit is configured to acquire brightness of the fluorescence based only on a color-specific video signal of one color corresponding to the fluorescence, the color-specific video signal being included in the video signal. The luminance control unit is configured to adjust luminance of a fluorescent image formed from the video signal, based on the brightness of the fluorescence acquired by the photometric unit.

Abstract: A system, method, and apparatus for performing intraocular lens implantation using real-time surgical reference indicium are disclosed. An example method includes recording a patient specific pre-operative still image of an eye prior to cyclorotation of the eye when a patient lies down for surgery and generating at least one real-time multidimensional visualization of at least a portion of the eye for display. The method further includes using the patient specific pre-operative still image to at least produce at least one virtual surgical reference indicium including an ocular natural vertical axis of the eye and align the at least one virtual surgical reference indicium to the eye in conjunction with the real-time multidimensional visualization of at least a portion of the eye. The patient specific pre-operative still image is captured under a dilation condition selected from the group consisting of natural dilation, chemical dilation, and no dilation.

Abstract: Provided is an ultrasound system configured to detect a flow noise signal at a phantom gate and display a visual indictor representing the detected flow noise signal. The ultrasound system transmits ultrasound signals to an object including a sample volume and receives echo signals from the sample volume and at least one phantom gate. The ultrasound system also generates an ultrasound image based on the received echo signals and displays the generated ultrasound image. Furthermore, the ultrasound system detects a flow noise signal at the at least one phantom gate by using the echo signals and displays a visual indicator representing the detected flow noise signal together with the ultrasound image.

Abstract: Intravascular devices, systems, and methods are disclosed. In some embodiments, a medical imaging system for imaging vasculature of a patient is provided. The imaging system includes a console that has one or more processors with a medical imaging system interface running thereon, an acquisition card in communication with the one or more processors and in communication with a patient interface module (PIM), and an intravascular imaging component in communication with the PIM and disposed on a distal end of a flexible elongate member. The medical imaging system interface provides a plurality of settings groups for selection by a user, each of the settings groups having pre-acquisition parameters and post-acquisition parameters that are optimal for imaging a desired viewing target within the vasculature. Associated methods and computer-readable media are provided.

Abstract: Embodiments of the present disclosure are related to intravascular imaging devices having a low reverberation housing and associated systems and methods. In some particular embodiments, the devices of the present disclosure include a transducer housing having a trough on the backside of the ultrasound transducer to deflect ultrasound signals away from the ultrasound transducer. For example, in some implementations an intravascular imaging device is provided that includes a catheter body; a drive cable extending through a lumen of the catheter body; a housing coupled to a distal section of the drive cable; and an ultrasound transducer mounted within the housing, wherein the housing includes a trough on a backside of the ultrasound transducer, the trough shaped to deflect ultrasound signals away from the ultrasound transducer. Methods of making such devices and systems are also provided.

Abstract: An ultrasonic imaging apparatus includes a plurality of transducers aligned in a line, a select circuit configured to cause transducers selected from the plurality of transducers to transmit an ultrasonic pulse and receive a plurality of received signals, respectively, and a digital signal processing circuit configured to align in time and add up the plurality of received signals weighted by a plurality of respective weighting factors, wherein the digital signal processing circuit changes the plurality of weighting factors according to a time position on the plurality of received signals such that ratios between the plurality of weighting factors change.

Abstract: Magnetic resonance methods comprise tractographically establishing a path along a structure in a specimen and finding a distribution of structure radii or cross-sectional areas along the path. Based on the distribution and the path, end-to-end functional characteristics of the structure are estimated. For example, nerve transit times or distributions of transit times can be estimated for a plurality of nervous system locations such as Brodmann areas. Comparison of estimated transit times or distributions thereof between reference values or other values from the same structure can be used to assess specimen health.

Abstract: A device for supporting determination of return of spontaneous circulation, ROSC, during an associated cardiopulmonary resuscitation, CPR, procedure which is being performed on an associated patient. A sensor is used to sense a physiological signal of the patient. Frequency analysis of the signal is carried out to extract dominant fundamental frequency components in the signal. From this analysis it is possible to determine that there has been a potential ROSC.

Abstract: A magnetic resonance coil apparatus has a posterior coil unit. The magnetic resonance coil apparatus having a posterior coil unit includes a base unit, a tilting unit and a force transmission unit. The tilting unit, which includes at least one coupling element, is arranged on the base unit such that the tilting unit can tilt with respect to the base unit. For each coupling element of the tilting unit, the base unit includes at least one corresponding coupling element. The coupling state between the at least one coupling element of the tilting unit and the at least one corresponding coupling element of the base unit can be changed by actuating the force transmission unit.

Abstract: A blood pressure measuring device according to the present disclosure includes: a light emitting element, a light receiving element, and a signal processing module configured to calculate a blood pressure value on the basis of a signal reflected to the light receiving element. Herein, the signal processing module generates an optical arterial pulse on the basis of the signal reflected to the light receiving element by executing a blood pressure measuring program and calculates a blood pressure value on the basis of the optical arterial pulse.

Abstract: An ultrasound imaging system with pixel oriented processing is provided in which a method of producing a Doppler velocity image is accomplished by emitting unfocused acoustic signals into a medium over substantially an entire field; receiving scattered and reflected ultrasonic signals on a transducer array in response to the emission; processing the received ultrasonic signals to extract information to construct a Doppler velocity signal corresponding to at least one point in the medium; and generating on a display device the Doppler velocity image from the processed Doppler velocity signal. Acquisition sequences and signal processing algorithms are described that provide improved quantification of fluid flow parameters, including improved discrimination between regions of blood flow and tissue. Very high frame rate Spectral Doppler and Vector Doppler acquisition modes for real-time and post-acquisition visualization over a large field of view are described.

Abstract: A positron emission tomography (PET) detector configuration for a combined PET and computed tomography (CT) imaging system, wherein the CT system includes an annular cavity. The configuration includes a backplane having a neutral axis and an aperture. In addition, the configuration includes at least one PET detector located about the aperture, wherein a center of mass of the at least one PET detector is in-line with the neutral axis and wherein a portion of the at least one PET detector is located in the annular cavity thereby reducing a footprint of the combined PET and CT imaging system. Further, the location of the at least one PET detector reduces the strength needed for maintaining structural integrity of the backplane.

Abstract: A scanner of a blood flow measurement apparatus of an embodiment alternately performs first scan and second scan for first and second cross sections both intersecting an interested blood vessel. An image forming unit forms one or more images of the first cross section including a phase image of the first cross section and an image of the second cross section. A blood vessel region specification unit specifies a first blood vessel region in any of the one or more images of the first cross section and a second blood vessel region in the image of the second cross section. A gradient calculation unit calculates a gradient of the interested blood vessel at the first cross section based on the first and second blood vessel regions. A blood flow information generation unit generates blood flow information based on the phase image and the gradient.

Abstract: A system and method for determining at least one physiological parameter of a subject. The system comprises a sensor for skin apposition. The sensor comprises at least one light source for illuminating of a thoracic bone or a septum, and a detector for measuring of reflected and/or scattered light from blood vessels related to the thoracic bone or septum. The system further includes a control unit configured to control operation of the sensor and an analysing unit configured to analyse the measurement data for determining the at least one physiological parameter.

Abstract: An ultrasonic imaging system is described in which a column-row-parallel architecture is provided at the circuit level of an ultrasonic transceiver. The ultrasonic imaging system can include a N×M array of transducer elements and a plurality of transceiver circuits where each transceiver circuit is connected to a corresponding one transducer element of the N×M array of transducer elements. A shared pulser gate driver and a shared VGA is provided for each row and column. Selection logic includes row select, column select, and per-element bit select. Through the column-row-parallel architecture, a variety of aperture configurations can be achieved.

Abstract: An optical vital signs sensor configured to measure or determine vital signs of a user comprises a light source configured to generate a light beam having an angular range of angles of incidence. The light beam is directed towards the skin of the user. A photo detector is provided and is configured to detect light which is indicative of a reflection of the light beam from the light source in or from the skin of the user. The light source and the photo detector are arranged adjacent to each other and on the same side of the skin of the user. A light shaping unit is configured to shape the light beam of the light source before the light beam enters the skin by limiting the angular range of angle of incidence to less than 20°.

Abstract: The device for treating the vaginal canal by means of a laser beam comprises a retractor for the wall of the vaginal canal, associated with a scanning system for scanning the laser beam towards the wall by means of a pyramidal mirror for laser beam reflection.