摘要:
A method for determining an applicable path of movement of an object in human or animal tissue is based on intensity data obtained by a 3D imaging technique. The applicable path of movement connects a starling position of the object with a defined target location. The method includes defining the target location of a reference point of the object and choosing at least one possible starting position of the reference point of the object. Further, the method includes determining a candidate path of movement between the corresponding possible starling position and the defined target location. Next, the candidate path of movement is evaluated for being an applicable path. The candidate path is evaluated based on information about local intensity extrema and/or intensity variation resulting from the intensity data along the candidate path of movement.
摘要:
A neurostimulation device is provided comprising an input, a neurostimulation probe, a stimulation unit and a distribution calculation module. At the input stimulation data is received comprising information relating to a stimulation preferability and an orientation of at least one fiber bundle. The neurostimulation probe comprises an array of stimulation electrodes which are coupled to the stimulation unit. The stimulation unit, in accordance with a specified current distribution, provides currents to the respective stimulation electrodes for generating an electric field gradient. The distribution calculation module is coupled to the input and the stimulation unit for based on the stimulation data determining a preferred position and orientation for the electric field gradient, and based on the preferred position and orientation for the electric field gradient, calculating the specified current distribution.
摘要:
A system (10) and method (20) for planning a neurosurgical operation are provided the system (10) comprises an input (11) for receiving functional data (25) and anatomical data of a brain region (31), and a processor (12) configured to perform the method (20) according to the invention. The method (20) comprises analyzing (26) the functional data (25) to form a network representation (27) of functional connections, mapping the network representation (27) of the functional connections and the anatomical data to a common coordinate system, determining an expected function loss associated with a simulated removal of network nodes (32) or network connections (42) from the network representation (27), and identifying critical network connections and/or critical network nodes based on the expected function loss.
摘要:
A method is provided for visualizing a surgical trajectory (32, 101, 42, 46, 47). The method comprises steps of receiving (71) 3D imaging information (31) of a region to undergo surgery and combining (72) the received 3D imaging information (31) with data from a digitized anatomical atlas. As a result, a combined map of the region to undergo surgery is obtained. The combined map comprises expected positions of anatomical structures (102, 103, 104) in the region to undergo surgery. The method further comprises steps of receiving (73) the surgical trajectory (32, 101, 42, 46, 47) for the surgery, determining (74) positions of intersections (43, 44) of the surgical trajectory (32, 101, 42, 46, 47) with the anatomical structures (102, 103, 104) and providing (75) the positions of the intersections (43, 44) in a coordinate system aligned with the surgical trajectory (32, 101, 42, 46, 47).
摘要:
The present invention relates to a recording apparatus, record carrier and method of recording data on at least two layers of a recording medium by using a radiation power, wherein individual recording speeds are determined for respective ones of the at least two layers at different values of the radiation power. A recording speed to be used for recording on an individual one of the at least two recording layers is selected based on a maximum radiation power specified for the recording operation, and the speed of the recording operation is controlled individually for each of the at least two layers based on the selected recording speed. The determination of the individual recording speeds at different radiation power values may be written or embossed on the record carrier. Furthermore, a recording sequence used for recording on the recording layers can be set based on the sensitivities and thus recording speeds. Thereby, total recording time can be minimized for multi-layer recording media.
摘要:
A method is provided for visualizing a surgical trajectory (32, 101, 42, 46, 47). The method comprises steps of receiving (71) 3D imaging information (31) of a region to undergo surgery and combining (72) the received 3D imaging information (31) with data from a digitized anatomical atlas. As a result, a combined map of the region to undergo surgery is obtained. The combined map comprises expected positions of anatomical structures (102, 103, 104) in the region to undergo surgery. The method further comprises steps of receiving (73) the surgical trajectory (32, 101, 42, 46, 47) for the surgery, determining (74) positions of intersections (43, 44) of the surgical trajectory (32, 101, 42, 46, 47) with the anatomical structures (102, 103, 104) and providing (75) the positions of the intersections (43, 44) in a coordinate system aligned with the surgical trajectory (32, 101, 42, 46, 47).
摘要:
A multilayer record carrier of a writable type has a first recording layer (40) having a first recording stack (50,51) of a first type and a second recording layer (41) having a second recording stack (54,55) of a second type. The first and second recording stacks have different writing parameters. Each recording layer has a pre-formed recording control pattern that is readable via a laser beam for indicating the track. At least one recording control pattern comprises a recording stack type indicator for indicating the writing parameters of the second recording stack. A recording device has a control unit (20) for adjusting recording parameters in the device in dependence of the recording stack type indicator retrieved from the recording control pattern.
摘要:
A stimulation apparatus includes a stimulation lead (102), a multiplexer (114), a stimulation signal generator (116), and a signal detector (120). The stimulation lead (102) includes a plurality of stimulation electrodes (112) disposed in an array about a distal portion of the lead body (110). The arrangement of the electrodes (112) facilitates the controlled steering of stimulating electrical field (118) in three dimensions. Four dimensional field steering may also be provided.
摘要:
A multi-stack optical data storage medium, for recording using a focused radiation beam having a wavelength λ and entering through an entrance face of the medium, has a first substrate having a first guide groove formed therein, and a first recording stack including a recordable type recording layer having a thickness dL0G in the groove and a thickness dL0L adjacent the groove. A second substrate has a second guide groove formed therein, and a second recording stack including a recordable type recording layer having a thickness dL1G in the groove and a thickness dL1L adjacent the groove. The second recording stack is at a position closer to the entrance face than the first recording stack. The depth of the first guide groove is smaller than 0.15λ and dL0L is substantially equal to or larger than dL1G.
摘要:
A stimulation apparatus includes a stimulation lead (102), a multiplexer (114), a stimulation signal generator (116), and a signal detector (120). The stimulation lead (102) includes a plurality of stimulation electrodes (112) disposed in an array about a distal portion of the lead body (110). The arrangement of the electrodes (112) facilitates the controlled steering of stimulating electrical field (118) in three dimensions. Four dimensional field steering may also be provided.