| 摘要 |
<p>A hand-holdable inspection device (10) for three-dimensional inspection of a volume distal to a surface. The inspection device has a hand-holdable unit including a source of penetrating radiation (12) for providing a beam (14) of specified cross-section and a detector arrangement (46) for detecting penetrating radiation from the beam scattered by the object (36) in the direction of the detector arrangement and for generating a scattered radiation signal. Additionally, the inspection device has a controller (48) for characterizing the volume based at least on the scattered radiation signal. The detector arrangement includes one or more backscatter detectors that may be disposed asymmetrically with respect to the beam and at differing displacements with respect to the surface.</p> |
