Abstract: A delta-relaxation magnetic resonance imaging (DREMR) system is provided. The system includes a main field magnet and field shifting coils. A main magnetic field with a strength B0 can be generated using the main filed magnet and the strength B0 of the main magnetic field can be varied through the use of the field-shifting coils. The DREMR system can be used to perform signal acquisition based on a pulse sequence for acquiring at least one of T2*-weighted signals imaging; MR spectroscopy signals; saturation imaging signals and MR signals for fingerprinting. The MR signal acquisition can be augmented by varying the strength B0 of the main magnetic field for at least a portion of the pulse sequence used to acquire the MR signal.

Abstract: A medical imaging system for illuminating tissue samples using three-dimensional structured illumination microscopy is port-based surgery is provided. The system comprises: an image sensor; a mirror device; zoom optics; a light modulator; a processor; and collimating optics configured to convey one or more images from the modulator to the mirror, the mirror configured to convey the images to the zoom optics, the zoom optics configured: to convey the image(s) from the mirror to a tissue sample; and convey one or more resulting images, formed by the image(s) illuminating the sample, back to the mirror, which conveys the resulting image(s) from the zoom optics to the image sensor, and, the processor configured to control the modulator to form the image(s), the image(s) including at least one pattern selected to interact with the sample to generate different depth information in each of resulting image(s).

Abstract: A method of data acquisition at a magnetic resonance imaging (MRI) system is provided. The system receives at least a portion of raw data for an image, and detects anomalies in the portion of raw data received. When anomalies are detected, the system can correct those anomalies dynamically, without waiting for a new scan to be ordered. The system can attempt to scan the offending portion of the raw data, either upon detection of the anomaly or at some point during the scan. The system can also correct anomalies using digital correction methods based on expected values. The anomalies can be detected based on variations from thresholds, masks and expected values all of which can be obtained using one of the ongoing scan, previously performed scans and apriori information relating to the type of scan being performed.

Abstract: A method of data acquisition at a magnetic resonance imaging (MRI) system is provided. The system receives at least a portion of raw data for an image, and detects anomalies in the portion of raw data received. When anomalies are detected, the system can correct those anomalies dynamically, without waiting for a new scan to be ordered. The system can attempt to scan the offending portion of the raw data, either upon detection of the anomaly or at some point during the scan. The system can also correct anomalies using digital correction methods based on expected values. The anomalies can be detected based on variations from thresholds, masks and expected values all of which can be obtained using one of the ongoing scan, previously performed scans and apriori information relating to the type of scan being performed.

Abstract: A magnetic resonance imaging (MRI) system is provided. The system includes a main field magnet generating a main magnetic field B0. Moreover, the system further includes radio frequency (RF) receiver coils including a first combination of two coils, the two coils of the first combination decoupled based on quadrature decoupling such that the two coils of the first combination are able to receive signals orthogonal to each other and to B0. The two coils can be butterfly coils, the loop-plain of the butterfly coils arranged along a surface, the longitudinal axis of the butterfly coils being substantially orthogonal and crossing at substantially midpoint. The surface can be substantially orthogonal to B0 and be curved. The first of the two coils can also be a loop coil and the second of the two coils a butterfly coil.

Abstract: Systems, methods, and devices relating to tracking a vehicle on its journey. At predetermined reporting time intervals, the vehicle's location is determined using GNSS and a current vector is calculated based on a current location and an immediately preceding location. The difference between the current vector and the immediately preceding vector is then determined and this difference is stored in the data packet. The data packet is transmitted to the base station using a two-way radio data link at select predetermined transmission time intervals. The data in the data packet is encoded to minimize the number of bits needed to store each data point.

Abstract: A magnetic resonance imaging (MRI) system is provided. The system includes a main field magnet generating a main magnetic field B0. Moreover, the system further includes radio frequency (RF) receiver coils including a first combination of two coils, the two coils of the first combination decoupled based on quadrature decoupling such that the two coils of the first combination are able to receive signals orthogonal to each other and to B0. The two coils can be butterfly coils, the loop-plain of the butterfly coils arranged along a surface, the longitudinal axis of the butterfly coils being substantially orthogonal and crossing at substantially midpoint. The surface can be substantially orthogonal to B0 and be curved. The first of the two coils can also be a loop coil and the second of the two coils a butterfly coil.

Abstract: A method of correcting warping of an acquired image in an MRI system, caused by non-linearities in gradient field profiles of gradient coils is set forth, comprising a) constructing a computer model representing conducting pathways for each gradient coil in said MRI system; b) calculating a predicted magnetic field at each point in space for each said gradient coil in said model; c) measuring actual magnetic field at each point in space for each said gradient coil in said MRI system; d) verifying accuracy of said model by comparing said predicted magnetic field to said actual magnetic field at each said point in space and in the event said model is not accurate then repeating a)-d), and in the event said model is accurate then; constructing a distortion map for mapping coordinates in real space to coordinates in warped space of said acquired image based on deviations of said predicted magnetic field from linearity; and unwarping said warping of the acquired image using said distortion map.

Abstract: A method of configuring a conducting grid of elements interconnected at intersecting nodes by switches is described.

Abstract: A method of correcting warping of an acquired image in an MRI system, caused by non-linearities in gradient field profiles of gradient coils is set forth, comprising a) constructing a computer model representing conducting pathways for each gradient coil in said MRI system; b) calculating a predicted magnetic field at each point in space for each said gradient coil in said model; c) measuring actual magnetic field at each point in space for each said gradient coil in said MRI system; d) verifying accuracy of said model by comparing said predicted magnetic field to said actual magnetic field at each said point in space and in the event said model is not accurate then repeating a)-d), and in the event said model is accurate then; constructing a distortion map for mapping coordinates in real space to coordinates in warped space of said acquired image based on deviations of said predicted magnetic field from linearity; and unwarping said warping of the acquired image using said distortion map.

Abstract: A method of configuring a conducting grid of elements interconnected at intersecting nodes by switches is described.

Abstract: A method of correcting warping of an acquired image in an MRI system, caused by non-linearities in gradient field profiles of gradient coils is set forth, comprising a) constructing a computer model representing conducting pathways for each gradient coil in said MRI system; b) calculating a predicted magnetic field at each point in space for each said gradient coil in said model; c) measuring actual magnetic field at each point in space for each said gradient coil in said MRI system; d) verifying accuracy of said model by comparing said predicted magnetic field to said actual magnetic field at each said point in space and in the event said model is not accurate then repeating a)-d), and in the event said model is accurate then; constructing a distortion map for mapping coordinates in real space to coordinates in warped space of said acquired image based on deviations of said predicted magnetic field from linearity; and unwarping said warping of the acquired image using said distortion map.

Abstract: A method of configuring a conducting grid of elements interconnected at intersecting nodes by switches is described.

Abstract: Systems, methods, and devices relating to tracking a vehicle on its journey. At predetermined reporting time intervals, the vehicle's location is determined using GNSS and a current vector is calculated based on a current location and an immediately preceding location. The difference between the current vector and the immediately preceding vector is then determined and this difference is stored in the data packet. The data packet is transmitted to the base station using a two-way radio data link at select predetermined transmission time intervals. The data in the data packet is encoded to minimize the number of bits needed to store each data point.

Abstract: Systems and methods relating to patch antennas. A patch antenna has a substrate, a resonant metal plate at one side of the substrate, and a ground plane at the other opposite side of the substrate. Two feed pins are used to couple the antenna to other circuitry. The feed pins pass through the substrate and holes in at the ground plane. The feed pins are physically disconnected from both the resonant metal plate and the ground plane. The feed pins are capacitively coupled to the resonant metal plate to provide an electronic connection between other circuitry and the patch antenna.

Abstract: A method for dynamically personalizing transportation in a vehicle comprises the steps of providing a vehicle including a messaging device for displaying messages, providing a central dispatch system for managing passenger allocation to the vehicle, receiving passenger specific information at the dispatch system, providing data relating to the passenger specific information from the dispatch system to the messaging device, and selecting and displaying a message based on the data for display. Further, a method is disclosed in which messages depending on passenger specific information, and messages independent form passenger specific information are selected and displayed. The messaging device is in communication with a video display unit or with a printing device for displaying messages received.

Abstract: A method for dynamically personalizing transportation in a vehicle comprises the steps of providing a vehicle including a messaging device for displaying messages, providing a central dispatch system for managing passenger allocation to the vehicle, receiving passenger specific information at the dispatch system, providing data relating to the passenger specific information from the dispatch system to the messaging device, and selecting and displaying a message based on the data for display. Further, a method is disclosed in which messages depending on passenger specific information, and messages independent form passenger specific information are selected and displayed. The messaging device is in communication with a video display unit or with a printing device for displaying messages received.

Abstract: A loop antenna which is electrically small relative to a wavelength of a signal which it is designed to receive. The antenna is an electrically small, low profile, band switchable antenna which can be mounted on a metallic surface such as a truck or railway car rooftop and can be used to communicate with earth satellites. The antenna is polarized such that the plane containing the electric field is horizontal. Alternatively, the antenna can receive circularly polarized signals.

Abstract: The present invention relates to a radio receiver for receiving a radio signal, a first circuit for beating the signal to zero intermediate frequency in phase and quadrature shifted signals, a circuit for amplifying the in phase and quadrature shifted zero intermediate frequency signals, a second circuit for beating the amplified intermediate frequency signals to predetermined non-zero intermediate frequency in phase and quadrature shifted signals, a summer for summing the non-zero signals, and a circuit for applying the summed signals to a discriminator to obtain an output signal. Other embodiments are extended POCSAG for enhanced battery saving, paging sequence numbers for reception integrity control, digital AFC, script control of the pager for organizer/schedule applications, a vibrator holster for improved pager format and saving of battery power, intelligent low battery detection, and features arising from electronic on/off function.

Abstract: A bias circuit for a pair of field effect transistor (FET) stages comprising a circuit for AC coupling a signal amplified by a first stage to the input of a second stage, a power source for supplying DC operating current to both of the stages in series, a circuit for sensing current drawn by the second stage and in response thereto for controlling bias of the first stage, and a circuit for blocking AC signals amplified by the first stage from being passed via a DC operating current path to the second stage, whereby the same DC operating current is passed through both first and second stages and is blocked from passing through the AC coupling circuit.