NDLI: A study on the artifacts generated by dental materials in PET/CT image

Content Provider	IEEE Xplore Digital Library
Author	Hoon-Hee Park Ji Yun Shin Juyoung Lee Gye Hwan Jin Hyun Soo Kim Kwang-Yeul Lyu Byung Sam Kang Tae Soo Lee
Copyright Year	2013
Description	Author affiliation: Dept. of Radiol., Nambu Univ., Gwangju, South Korea (Gye Hwan Jin) \|\| Dept. of Biomed. Eng., Chungbuk Nat. Univ., Cheongju, South Korea (Hoon-Hee Park; Ji Yun Shin; Tae Soo Lee) \|\| Dept. of Radiol. Technol., Shingu Coll., South Korea (Hyun Soo Kim; Kwang-Yeul Lyu; Byung Sam Kang) \|\| Adv. Mol. Imaging, Philips Healthcare, South Korea (Juyoung Lee)
Abstract	PET/CT system reduces the scanning time and provides an anatomical image because it realizes a CT-based attenuation corrected image without using an isotope, such as 68Ge or 137Cs, in the attenuation correcting method due to the recent technological development. On the other hand, artifacts are generated in a CT image by dental materials, which affect the attenuation corrected PET image. Against this backdrop, this study performed a clinical experiment and a phantom experiment. The clinical experiment targeted 40 patients without oral disease, including 20 patients who had metal prosthesis in their tooth and 20 patients who had a dental implant in tooth. In the phantom experiment, a dental cast was used for a PET/CT scan after the metal prosthesis and the dental implant was inserted in the original dental phantom to make a dental cast. According to the study results, when the patients had metal prosthesis, standard uptake value (SUV) decreased by approximately 19.6% in the dark streak artifact region and increased by approximately 90.1% in the bright streak artifact region, compared with the artifact free region. In the phantom with metal prosthesis, the SUV decreased by approximately 18.1% in the dark streak artifact region and increased by 18.0% in the bright streak artifact region, compared to the artifact free region. When the patients with dental implant, the SUV decreased by approximately 19.1% in the dark streak artifact region and increased by 96.6% in the bright streak artifact region, compared with the artifact free region. In the phantom with dental implant, the SUV decreased by approximately 14.4% in the dark streak artifact region and increased by 7.0% in the bright streak artifact region, compared to the artifact free region. Therefore, by considering these results, we can improve the diagnostic accuracy in oral and maxillofacial cancer.
Starting Page	2465
Ending Page	2468
File Size	1765131
Page Count	4
File Format	PDF
ISBN	9781457702167
ISSN	1557170X
DOI	10.1109/EMBC.2013.6610039
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-03
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computed tomography Positron emission tomography Dentistry Metals Phantoms Implants Attenuation
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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