Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Synthetic scanner arrays in tomographic reconstructions from fan- and cone-beam projections

Not Accessible

Your library or personal account may give you access

Abstract

A deterministic method for artifact-free reconstruction from truncated sets of fan-beam projections that extends the artifact-free zone of fan-beam scanners is presented. Truncated partial sets of projections are merged into a complete virtual set of projections before reconstruction through synthetic scanner arrays. The reconstruction from the virtual set of projections yields the artifact-free representation of the whole object needed for evaluation of its global structure. The extent of the artifact-free zone in reconstructions from cone-beam projections is evaluated. The concept of synthetic linear and circular scanner arrays for reconstruction from truncated sets of projections is extended to cone-beam geometry. It is shown that linear scanner arrays are not directly applicable to cone-beam geometry but yield reasonable approximations if the partial sets of projections are resorted into a virtual set of wedge-beam projections before reconstruction. The presented solution constitutes a practical and exact deterministic method of horizontally extending the artifact-free zone in cone-beam geometry. The extension of the vertical limits of the artifact-free zone is discussed. The proposed methods provide a practical low-cost approach to artifact-free reconstruction of large objects. Illustrative examples are provided.

© 1994 Optical Society of America

Full Article  |  PDF Article
More Like This
Generalized fan beam reconstruction algorithm and its applications

Martin Müller and Gonzalo R. Arce
J. Opt. Soc. Am. A 11(9) 2410-2428 (1994)

Truncation artifacts in tomographic reconstructions from projections

Martin Müller and Gonzalo R. Arce
Appl. Opt. 35(20) 3902-3914 (1996)

Three-dimensional reconstruction of a bone image from cone beam projections

Nagaaki Ohyama, Soichi Inoue, Hideaki Haneishi, Jumpei Tsujiuchi, and Toshio Honda
Appl. Opt. 28(24) 5338-5341 (1989)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (17)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (33)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved