A deep learning approach for (18)F-FDG PET attenuation correction.
A deep learning approach for (18)F-FDG PET attenuation correction.
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DOI:
10.1186/s40658-018-0225-8
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发表时间:
2018-11-12
期刊:
影响因子:
4
通讯作者:
McMillan AB
中科院分区:
文献类型:
--
作者:
Liu F;Jang H;Kijowski R;Zhao G;Bradshaw T;McMillan AB
To develop and evaluate the feasibility of a data-driven deep learning approach (deepAC) for positron-emission tomography (PET) image attenuation correction without anatomical imaging. A PET attenuation correction pipeline was developed utilizing deep learning to generate continuously valued pseudo-computed tomography (CT) images from uncorrected 18F-fluorodeoxyglucose (18F-FDG) PET images. A deep convolutional encoder-decoder network was trained to identify tissue contrast in volumetric uncorrected PET images co-registered to CT data. A set of 100 retrospective 3D FDG PET head images was used to train the model. The model was evaluated in another 28 patients by comparing the generated pseudo-CT to the acquired CT using Dice coefficient and mean absolute error (MAE) and finally by comparing reconstructed PET images using the pseudo-CT and acquired CT for attenuation correction. Paired-sample t tests were used for statistical analysis to compare PET reconstruction error using deepAC with CT-based attenuation correction. deepAC produced pseudo-CTs with Dice coefficients of 0.80 ± 0.02 for air, 0.94 ± 0.01 for soft tissue, and 0.75 ± 0.03 for bone and MAE of 111 ± 16 HU relative to the PET/CT dataset. deepAC provides quantitatively accurate 18F-FDG PET results with average errors of less than 1% in most brain regions. We have developed an automated approach (deepAC) that allows generation of a continuously valued pseudo-CT from a single 18F-FDG non-attenuation-corrected (NAC) PET image and evaluated it in PET/CT brain imaging.
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影响因子:
3.3
作者:
Jang H;Liu F;Bradshaw T;McMillan AB
通讯作者:
McMillan AB
影响因子:
1.8
作者:
CENSOR, Y;GUSTAFSON, DE;TUY, H
通讯作者:
TUY, H
影响因子:
3.8
作者:
Mehranian, Abolfazl;Arabi, Hossein;Zaidi, Habib
通讯作者:
Zaidi, Habib
影响因子:
19.7
作者:
Liu, Fang;Jang, Hyungseok;McMillan, Alan B.
通讯作者:
McMillan, Alan B.
DOI:
10.1007/s00259-002-0796-3
发表时间:
2002-07-01
影响因子:
9.1
作者:
Burger, C;Goerres, G;von Schulthess, GK
通讯作者:
von Schulthess, GK