Anisotropic transfer function for event location in an imaging device
AssigneeSiemens Medical Solutions USA, Inc.
InventorRonald E. Malmin
Life of this patent
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Abstract
An anisotropic imaging method and apparatus for determining the location of a radiation event. The method includes the steps of obtaining a sensor reading in response to a radiation event and applying an anisotropic transfer function to the sensor reading. The anisotropic transfer function adjusts the sensor reading by using a different transfer curve depending upon whether a spatial coordinate of the detected radiation event in the X-axis direction or a spatial coordinate in the Y-axis direction is being calculated.
Claims19
A method for radiation event location in an anisotropic radiographic imaging device that includes a plurality of sensors arranged in an array, comprising the steps of:
- obtaining output signals from at least a subset of said plurality of sensors in response to a radiation event occurring at a certain position in said array defined by a set of spatial coordinates;
- applying an anisotropic transfer function to said sensor output signals, which modifies said sensor output signals differently in accordance with a direction along the array over which consecutive sensor output signals are used to calculate a particular one of said set of spatial coordinates;
- and
- calculating said set of spatial coordinates using said modified sensor output signals.
An anisotropic imaging device, comprising:
- a plurality of sensors arranged in an array, at least a subset of said plurality of sensors generating an output signal in response to a radiation event occurring at a certain position in said array defined by a set of spatial coordinates;
- a processor communicating with said plurality of sensors;
- said processor obtaining said output signals from said subset of said plurality of sensors;
- said processor applying an anisotropic transfer function to said sensor output signals, which modifies said sensor output signals differently in accordance with a direction along the array over which consecutive sensor output signals are used to calculate a particular one of said set of spatial coordinates;
- and
- said processor calculating said set of spatial coordinates using said modified sensor output signals.
Dependencies are inferred from the claim text.