头颈部18F-FDG-PET/CT联合成像：金属伪影校正方法
Combined 18F-FDG-PET/CT imaging of the head and neck. An approach to metal artifact correction.
作者信息
Schäfers K P, Raupach R, Beyer T
机构信息
Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Str. 33, 48149 Münster, Germany.
出版信息
Nuklearmedizin. 2006;45(5):219-22.
UNLABELLED
PET/CT imaging is particularly promising for head/neck malignancies, but dental implants lead to biased CT attenuation and PET activity values following CT-based attenuation correction (CT-AC).
OBJECTIVE
Here, we implement a metal artifact correction procedure (MAR) as part of the CT-AC for PET/CT imaging.
RESULTS
Phantom studies indicate a maximum quantitative bias in CT and PET of 1000 HU and 30 %, which is reduced to 230 HU and 6 %, respectively following MAR. These results were verified in selected patients.
CONCLUSION
Artifacts and biases from dental implants can be reduced in PET/CT imaging by applying a simple MAR as part of the CT-AC.
未标注
PET/CT成像对头颈部恶性肿瘤特别有前景，但牙科植入物会导致基于CT的衰减校正（CT-AC）后CT衰减和PET活性值出现偏差。
目的
在此，我们实施一种金属伪影校正程序（MAR）作为PET/CT成像CT-AC的一部分。
结果
体模研究表明，CT和PET中的最大定量偏差分别为1000 HU和30%，MAR后分别降至230 HU和6%。这些结果在选定患者中得到验证。
结论
通过应用简单的MAR作为CT-AC的一部分，可减少PET/CT成像中牙科植入物产生的伪影和偏差。
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