Square wave cone beam scanning trajectory for data completeness in three-dimensional computerized tomography
This paper describes a scanning and data acquisition method for three-dimensional computerized tomography (CT) imaging of a field of view containing at least a portion of an object illuminated by a cone beam source. It comprises: defining a source scanning trajectory as a path traversed by the source; employing the cone beam source fixed with reference to a two-dimensional array detector with both source and detector movably positioned relative to the object in order to scan about the object; specifying the source scanning trajectory as a square wave on a cylindrical surface surrounding the field of view such that each plane passing through the field of view intersects the scanning trajectory in at lease one point; and scanning at a plurality of positions along the source scanning trajectory to obtain cone beam projection data.
- Assignee:
- General Electric Co., Schenectady, NY (United States)
- Patent Number(s):
- US 5073910; A
- Application Number:
- PPN: US 7-572651
- OSTI ID:
- 5645418
- Resource Relation:
- Patent File Date: 27 Aug 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COMPUTERIZED TOMOGRAPHY
DATA ACQUISITION SYSTEMS
IMAGE SCANNERS
BEAM SHAPING
RADIATION DETECTORS
THREE-DIMENSIONAL CALCULATIONS
RADIATION SOURCES
TRAJECTORIES
DIAGNOSTIC TECHNIQUES
MEASURING INSTRUMENTS
TOMOGRAPHY
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments