Work

Partial volume and aliasing artefacts in helical cone-beam CT

Year: 2004

Type: article

Abstract: A generalization of the quasi-exact algorithms of Kudo et al (2000 IEEE Trans. Med. Imaging 19 902-21) is developed that allows for data acquisition in a 'practical' frame for clinical diagnostic helical, cone-beam computed tomography (CT). The algorithm is investigated using data that model nonlinear partial volume averaging. This investigation leads to an understanding of aliasing artefacts in helical, cone-beam CT image reconstruction. An ad hoc scheme is proposed to mitigate artefacts due to the nonlinear partial volume and aliasing artefacts.

Source: Physics in Medicine and Biology

DOI: 10.1088/0031-9155/49/11/017

Authors: Yu Zou, Emil Y Sidky, Xiaochuan Pan

Institution: University of Chicago

Language: English

Topic: Medical Imaging Techniques and Applications

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

Open Access status: bronze