Measuring device and methods for characterization of a radiation field
AssigneeLaVision BioTec GmbH
InventorsFrank Killich, Uwe Engeland
Life of this patent
Estimating the term…
Abstract
A radiation field measuring device for the characterization of a radiation comprises a detector device and a reconstruction device. The detector device may have at least one detector camera, which contains at least one detector array arranged for the image recording of scattered radiation in a multiplicity of lateral directions that deviate from the longitudinal direction. The reconstruction device may be configured for the tomographic reconstruction of a field density of the scattered radiation in the radiation field.
Claims15
A radiation field measuring device (100), which is configured for characterizing a radiation field (1) that passes through a medium (2) in a longitudinal direction (z), comprising:
- a detector device (10) having at least one detector camera (11), which contains at least one detector array (12) arranged for the image recording of scattered radiation (3) that is generated in the medium by the radiation field (1) and is directed in at least 3 lateral directions, that deviate from the longitudinal direction (z), and
- a reconstruction device (20), which is configured for characterizing the radiation field (1) on the basis of image signals of the detector device (10) by means of a tomographic reconstruction of a field density of the scattered radiation (3) in the radiation field (1),
- characterized in that
- the detector device (10) comprises a plurality of detector cameras (11), each having at least one detector array (12) in which an associated detector camera is provided for each lateral direction in which a scattered radiation image is to be recorded or the detector device (10) comprises a single detector camera (11), which contains a plurality of detector arrays (12) that are each arranged for the image recording of scattered radiation (3) in one of the lateral directions,
- the detection device (10) is configured for a spectrally selective image recording of the scattered radiation (3), and
- the reconstruction device (20) is configured for the statistical or algebraic tomographic reconstruction of the field density of the scattered radiation (3) in the radiation field (1).
A method for characterizing a radiation field (1) that passes through a medium (2) in a longitudinal direction (z), using a radiation field measuring device (100), comprising the steps:
- recording an image by means of a detector device (10), of scattered radiation (3), which is generated in the medium (2) by the radiation field (1) and is directed in at least 3 lateral directions, that deviate from the longitudinal direction (z), and
- characterizing the radiation field (1) with a reconstruction device (20) using image signals of the detector device (10), wherein
- the reconstruction device (20) carries out a tomographic reconstruction of a field density of the scattered radiation (3) in the radiation field (1)
- characterized in that
- the detector device (10) comprises a plurality of detector cameras (11), each having at least one detector array (12) in which an associated detector camera is provided for each lateral direction in which a scattered radiation image is to be recorded or the detector device (10) comprises a single detector camera (11), which employs a plurality of detector arrays (12) that are each arranged for the image recording of scattered radiation (3) in one of the lateral directions,
- and wherein the image recording is carried out spectrally selectively, and
- the reconstruction device (20) carries out a non-analytical, in particular statistical or algebraic, tomographic reconstruction of the field density of the scattered radiation (3).
Dependencies are inferred from the claim text.