Abstract: Various embodiments of an X-ray imaging system employ a C-arm (60) and an X-ray overlay controller (410). In a planning overlay display mode, the controller (410) processes a planning X-ray image (420) and a reference planning X-ray image (421), both illustrative of the planning X-ray calibration device (400) and further processes a base X-ray image (424, 425) (422) illustrative of a base X-ray calibration device to control a display of a planned tool trajectory overlay (412) and a tracked tool position overlay (413) onto the planning X-ray image (420). In a guiding overlay display mode, the controller (410) processes a pair of interventional X-ray images (424, 425) and a guiding X-ray image (426), all illustrative of a guiding X-ray calibration device (402), to control a display of a guidance tool trajectory overlay (414) and a racked tool position overlay (415) onto the guiding X-ray image (426).

Abstract: Various embodiments for X-ray imaging system employs a C-arm registration controller (830) for controlling a registration of a C-arm (60) to an X-ray marker (800) based on a generation by the C-arm (60) of an X-ray image (820) illustrative of the X-ray marker (800). The system further employs a registration confirmation controller (840) for controlling an interactive overlay display of a virtual confirmation marker (801) onto a display of the X-ray image (820) based on the registration of the C-arm (60) to the X-ray marker (800), and for controlling a misalignment correction of the interactive overlay display of the virtual confirmation marker (801) relative to the X-ray marker (800) as illustrated in the X-ray image (820) responsive to an operator interface with the interactive overlay display of the virtual confirmation marker (801). The C-arm registration controller (830) adjusts the registration of the C-arm (60) to the X-ray marker (800) based on the misalignment correction.

Abstract: Various embodiments of the present disclosure include a C-arm registration system employing a controller (70) for registering a C-arm (60) to a X-ray ring marker (20). The X-ray ring marker (20) includes a coaxial construction of a chirp ring (40) and a centric ring (50) on an annular base (30). In operation, the controller (70) acquires a baseline X-ray image illustrative of the X-ray ring marker (20) within a baseline X-ray projection by the C-arm (60) at a baseline imaging pose, derives baseline position parameters of the X-ray ring marker (20) within the baseline X-ray projection as a function of an illustration of the centric ring (50) within the baseline X-ray image, and derives a baseline twist parameter of the X-ray ring marker (20) within the baseline X-ray projection as a function of the baseline position parameters and of an illustration of the chirp ring (40) within the baseline X-ray image.

Abstract: A controller for determining shape of an interventional device includes a memory that stores instructions, and a processor that executes the instructions. When executed by the processor, the instructions cause the controller to execute a process that includes controlling an imaging probe to emit at least one tracking beam to an interventional medical device over a period of time comprising multiple different points of time. The process also includes determining a shape of the interventional medical device, based on a response to the tracking beams received over the period of time from a first sensor that moves along the interventional medical device during the period of time relative to a fixed location on the interventional medical device for the period of time.

Abstract: A system for tracking location of an interventional medical device (01) includes an interface (193) and a controller (190). The interface (193) interfaces the system to an optical shape sensing device (102) which has a shape that conforms to a shape of the interventional medical device (01). The controller (190) includes a memory (191) that stores instructions and a processor (192) that executes the instructions. The instructions cause the system to identify a shape of the optical shape sensing device (102) using optical shape sensing signals received from the optical shape sensing device (102) via the interface (193), and identify a shape of the interventional medical device (01) in a first coordinate space of a first imaging system that images the interventional medical device (01) in a first imaging mode. The instructions also cause the system to register the interventional medical device (01) to the first coordinate space.

Abstract: A system includes an interface (193) to an optical shape sensing device (102) with a shape conforming to a shape of an interventional medical device (01). The system also includes a controller (190) with a memory (191) that stores instructions and a processor (192) that executes the instructions. The instructions cause the system to identify a shape of the optical shape sensing device (102) using optical shape sensing signals received via the interface (193), identify the interventional medical device (01) in disparate coordinate spaces of imaging systems that image the interventional medical device (01) in disparate imaging modes, and register the coordinate spaces to each other and to the interventional medical device (01).

Abstract: Method of calculating a scaled virtual grid for x-ray projection images, comprising providing at least a first and a second co-registered x-ray projection image Ij—j=1, 2, . . . of a desired anatomy of a patient (step S1), defining two points P1 and P2 of the desired anatomy in 3-D space and determining 3-D coordinates of the two points P1 and P2 thereby using the x-ray projection images (step S2), calculating the scaled virtual grid based on the determined 3-D coordinates of the two points P1 and P2 (step S3), and projecting and displaying the calculated grid to a user on at least one of the first and the second co-registered x-ray projection image (step S4).

Abstract: A steerable multi-plane ultrasound imaging system (MPUIS) for steering a plurality of intersecting image planes (PL1 . . . n) of a beamforming ultrasound imaging probe (BUIP) based on ultrasound signals transmitted between the beamforming ultrasound imaging probe (BUIP) and an ultrasound transducer (S) disposed within a field of view (FOV) of the probe (BUIP). An ultrasound tracking system (UTS) causes the beamforming ultrasound imaging probe (BUIP) to adjust an orientation of the first image plane (PL1) such that a first image plane passes through a position (POS) of the ultrasound transducer (S) by maximizing a magnitude of ultrasound signals transmitted between the beamforming ultrasound imaging probe (BUIP) and the ultrasound transducer (S). An orientation of a second image plane (PL2) is adjusted such that an intersection (AZ) between the first image plane and the second image plane passes through the position of the ultrasound transducer (S).

Abstract: A system for localizing a three-dimensional field of view of a beamforming ultrasound imaging probe based on a position indicator disposed within said field of view. The beamforming ultrasound imaging probe transmits and receives ultrasound signals within a three-dimensional field of view comprising a plurality of predetermined sub-volumes, each sub-volume being defined by a two dimensional array of beams. A controller causes the beamforming ultrasound imaging probe to scan the sub-volumes sequentially by transmitting and receiving ultrasound signals corresponding to each beam. A tracking system determines a position of the position indicator within the three-dimensional field of view; and determines a sub-volume in which the position indicator is located.

Abstract: A controller (220) for determining a shape of an interventional medical device in an interventional medical procedure based on a location of the interventional medical device includes a memory (221) that stores instructions and a processor (222) that executes the instructions. The instructions cause a system (200) that includes the controller (220) to implement a process that includes obtaining (S320) the location of the interventional medical device (201) and obtaining (S330) imagery of a volume that includes the interventional medical device. The process also includes applying (S340), based on the location of the interventional medical device (201), image processing to the imagery to identify the interventional medical device (201) including the shape of the interventional medical device (201). The process further includes (S350) segmenting the interventional medical device (201) to obtain a segmented representation of the interventional medical device (201).

Abstract: Various embodiments of the present disclosure include a C-arm registration system employing a controller (70) for registering a C-arm (60) to a X-ray ring marker (20). The X-ray ring marker (20) includes a coaxial construction of a chirp ring (40) and a centric ring (50) on an annular base (30). In operation, the controller (70) acquires a baseline X-ray image illustrative of the X-ray ring marker (20) within a baseline X-ray projection by the C-arm (60) at a baseline imaging pose, derives baseline position parameters of the X-ray ring marker (20) within the baseline X-ray projection as a function of an illustration of the centric ring (50) within the baseline X-ray image, and derives a baseline twist parameter of the X-ray ring marker (20) within the baseline X-ray projection as a function of the baseline position parameters and of an illustration of the chirp ring (40) within the baseline X-ray image.

Abstract: Systems and methods are provided for registering a shape sensing device, such as an optical shape sensing (OSS) device, with a previously obtained three-dimensional (3D) representation of a region of interest, the shape sensing device including an outer body for maneuvering through a passage in the region of interest and a force sensing region integrated with the outer body. The method determines multiple points at which an end of the outer body contacts a surface of an object in the region of interest, based on forces exerted on the end when contacting the surface and detected by the force sensing region; and registering the determined points with points in the 3D representation of the region of interest so that the registered points are in a common space.

Abstract: Various embodiments for X-ray imaging system employs a C-arm registration controller (830) for controlling a registration of a C-arm (60) to an X-ray marker (800) based on a generation by the C-arm (60) of an X-ray image (820) illustrative of the X-ray marker (800). The system further employs a registration confirmation controller (840) for controlling an interactive overlay display of a virtual confirmation marker (801) onto a display of the X-ray image (820) based on the registration of the C-arm (60) to the X-ray marker (800), and for controlling a misalignment correction of the interactive overlay display of the virtual confirmation marker (801) relative to the X-ray marker (800) as illustrated in the X-ray image (820) responsive to an operator interface with the interactive overlay display of the virtual confirmation marker (801). The C-arm registration controller (830) adjusts the registration of the C-arm (60) to the X-ray marker (800) based on the misalignment correction.

Abstract: Various embodiments of an X-ray imaging system employ a C-arm (60) and an X-ray overlay controller (410). In a planning overlay display mode, the controller (410) processes a planning X-ray image (420) and a reference planning X-ray image (421), both illustrative of the planning X-ray calibration device (400) and further processes a base X-ray image (424, 425) (422) illustrative of a base X-ray calibration device to control a display of a planned tool trajectory overlay (412) and a tracked tool position overlay (413) onto the planning X-ray image (420). In a guiding overlay display mode, the controller (410) processes a pair of interventional X-ray images (424, 425) and a guiding X-ray image (426), all illustrative of a guiding X-ray calibration device (402), to control a display of a guidance tool trajectory overlay (414) and a racked tool position overlay (415) onto the guiding X-ray image (426).

Abstract: A controller for determining shape of an interventional device includes a memory that stores instructions, and a processor that executes the instructions. When executed by the processor, the instructions cause the controller to execute a process that includes controlling an imaging probe to emit at least one tracking beam to an interventional medical device over a period of time comprising multiple different points of time. The process also includes determining a shape of the interventional medical device, based on a response to the tracking beams received over the period of time from a first sensor that moves along the interventional medical device during the period of time relative to a fixed location on the interventional medical device for the period of time.

Abstract: A position tracker driven display system for an interventional device (50) including an integration of one or more position trackers and one or more interventional tools. The position tracker driven display system employs a monitor (121) and a display controller (110) for controlling a real-time display on the monitor (121) of a tracking image illustrative of a navigation of a tracking node of the interventional device (50) within an anatomical region. The display controller (110) autonomously selects the tracking image among a plurality of registered spatial images illustrative of the anatomical region within an image space based on position tracking data informative of a position of the at least one position tracker within the anatomical region. The display controller (110) derives the autonomous selection of the tracking 120 image from a position of the tracking node of the interventional device (50) relative to the image space as indicated by the position tracking data.

Abstract: A tissue oximetry system employing diffuse optical spectroscopy includes an optical subsystem and an electronics and processing subsystem, together generating modulated optical signals processing a response optical signal in order to obtain measurements of blood oxygen values for a tissue from per-wavelength absorption values. Signal sources generate RF modulation signals, and ADC circuitry generates streams of digital sample values from analog detection signals.

Abstract: A tissue oximetry system employing diffuse optical spectroscopy includes an optical subsystem and an electronics and processing subsystem, together generating modulated optical signals processing a response optical signal in order to obtain measurements of blood oxygen values for a tissue from per-wavelength absorption values. Signal sources generate RF modulation signals, and ADC circuitry generates streams of digital sample values from analog detection signals.