초록 ▼

A multiple angle tomographic system includes a rotating gantry with a source, e.g., an x-ray source, and detector array combination mounted thereon so as to acquire a plurality of projections of objects passing through the gantry. A pre-screen subsystem utilizes a subset of the projections from thos

A multiple angle tomographic system includes a rotating gantry with a source, e.g., an x-ray source, and detector array combination mounted thereon so as to acquire a plurality of projections of objects passing through the gantry. A pre-screen subsystem utilizes a subset of the projections from those that can be acquired during a full scan so as to define a first plurality of projections--e.g., eight projections--that are sufficient analyze whether there is a likelihood that a targeted object, e.g., a firearm and/or plastic explosives is present. If there is a likelihood that a targeted object is present, a full-image CT reconstruction is commanded, automatically or manually, so as to verify and more fully assess the detected object. This combination of pre-screen and selective full-image CT reconstruction provides thorough inspection of closed containers, e.g., passenger luggage, by providing multiple angle and perspective viewing of targeted objects.

대표청구항

[ What is claimed is:] [1.] A CT scanning system of the type for generating projection data of at least a portion of an object disposed within the system for each of a pretermined number N projections at corresponding N projection angles for each scan of the object, said system further comprising:

[ What is claimed is:] [1.] A CT scanning system of the type for generating projection data of at least a portion of an object disposed within the system for each of a pretermined number N projections at corresponding N projection angles for each scan of the object, said system further comprising: