Motion compensated fan-beam reconstruction for nonrigid transformation.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 18599396.
- Also identified by DOI 10.1109/TMI.2008.925076.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
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 backprojection 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.
Medical subject headings
- Artifacts
- Motion
- Radiographic Image Interpretation, Computer-Assisted
- Signal Processing, Computer-Assisted