Motion Compensated Fan-Beam Reconstruction for Nonrigid Transformation

Motion Compensated Fan-Beam Reconstruction for Nonrigid Transformation

We develop an approximate fan-beam algorithm to reconstruct an object with time-dependent nonrigid transformation such as the heart. The method is in the form of derivative back- projection filtering with compensation of affine transformations on a local basis. Computer simulations showed the propos...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:IEEE transactions on medical imaging 2008-07, Vol.27 (7), p.907-917
Hauptverfasser: Taguchi, K., Kudo, H.
Format: Artikel
Sprache:eng
Schlagworte:
Algorithms
Biomedical imaging
Cardiac disease
Computed tomography
Computed tomography (CT)
Filtering
Heart
Humans
Image reconstruction
Imaging, Three-Dimensional - methods
Mathematics
Motion
motion compensation
Motion estimation
Myocardial Contraction
Noise reduction
Phantoms, Imaging
Radiation Dosage
Radiographic Image Interpretation, Computer-Assisted - methods
Radiology
Respiration
Scattering, Radiation
Signal Processing, Computer-Assisted
Time Factors
Tomography, X-Ray Computed - methods
X-ray imaging
X-Rays
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We develop an approximate fan-beam algorithm to reconstruct an object with time-dependent nonrigid transformation such as the heart. The method is in the form of derivative back- projection filtering with compensation of affine transformations on a local basis. Computer simulations showed the proposed method significantly reduces image artifact due to nonrigid motion. Therefore, with very little motion artifact, the proposed method allowed us to reconstruct images from projections over about one motion cycle, resulting in reduced image noise level down to 40% of the current level.
ISSN:0278-0062
1558-254X
DOI:10.1109/TMI.2008.925076