Computed tomography scanning system and method using a field emission x-ray source

US7227924B2 · kind B2 · utility

Assignee

• The University of North Carolina at Chapel Hill · US

Inventors

• Otto Z. Zhou · Chapel Hill, US
• Yuan Cheng · Hangzhou City, CN
• Jian Zhang · Carrboro, US
• Yueh Lee · Durham, US
• Jianping Lu · Chapel Hill, US
• Weili Lin · Chapel Hill, US

Key dates

• Filing date: Feb 7, 2005
• Grant date: Jun 5, 2007
• Expiry date: Feb 7, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2223/612
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Computed tomography scanning systems and methods using a field emission x-ray source are disclosed. An exemplary micro-computed tomography scanner comprises a micro-focus field emission x-ray source, an x-ray detector, an object stage placed between the x-ray source and the detector, an electronic control system and a computer that control the x-ray radiation and detector data collection, and computer software that reconstructs the three dimension image of the object using a series of projection images collected from different projection angles. Exemplary methods obtain a computed tomography image of an object in oscillatory motion using the micro computed tomography scanner.