ArticleJournal of medical imaging (Bellingham, Wash.)2015
Automatic correction of dental artifacts in PET/MRI.
Article in Journal of medical imaging (Bellingham, Wash.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- A review of PET attenuation correction methods for PET-MR.EJNMMI physics · 2023Review
- Validation of PET/MRI attenuation correction methodology in the study of brain tumours.BMC medical imaging · 2020Article
- Assessment of attenuation correction for myocardial PET imaging using combined PET/MRI.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2019Article
- Review
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Authors and funding
8 authors.
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Abstract
A challenge when using current magnetic resonance (MR)-based attenuation correction in positron emission tomography/MR imaging (PET/MRI) is that the MRIs can have a signal void around the dental fillings that is segmented as artificial air-regions in the attenuation map. For artifacts connected to the background, we propose an extension to an existing active contour algorithm to delineate the outer contour using the nonattenuation corrected PET image and the original attenuation map. We propose a combination of two different methods for differentiating the artifacts within the body from the anatomical air-regions by first using a template of artifact regions, and second, representing the artifact regions with a combination of active shape models and k-nearest-neighbors. The accuracy of the combined method has been evaluated using 25 [Formula: see text]-fluorodeoxyglucose PET/MR patients. Results showed that the approach was able to correct an average of [Formula: see text] of the artifact areas.
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