Does the beta regularization parameter of bayesian penalized likelihood reconstruction always affect the quantification accuracy and image quality of positron emission tomography computed tomography?
Does the beta regularization parameter of bayesian penalized likelihood reconstruction always affect the quantification accuracy and image quality of positron emission tomography computed tomography?
复制标题
贝叶斯惩罚可能重建的β正规化参数是否总是影响正电子发射断层扫描的量化准确性和图像质量？
DOI：
10.1002/acm2.13129
复制
发表时间：
2021-03
影响因子：
2.1
通讯作者：
Li S
中科院分区：
文献类型：
--
作者：
Wu Z;Guo B;Huang B;Zhao B;Qin Z;Hao X;Liang M;Xie J;Li S
This study aims to provide a detailed investigation on the noise penalization factor in Bayesian penalized likelihood (BPL)‐based algorithm, with the utilization of partial volume effect correction (PVC), so as to offer the suitable beta value and optimum standardized uptake value (SUV) parameters in clinical practice for small pulmonary nodules. A National Electrical Manufacturers Association (NEMA) image‐quality phantom was scanned and images were reconstructed using BPL with beta values ranged from 100 to 1000. The recovery coefficient (RC), contrast recovery (CR), and background variability (BV) were measured to assess the quantification accuracy and image quality. In the clinical assessment, lesions were categorized into sub‐centimeter (<10 mm, n = 7) group and medium size (10–30 mm, n = 16) group. Signal‐to‐noise ratio (SNR) and contrast‐to‐noise ratio (CNR) were measured to evaluate the image quality and lesion detectability. With PVC was performed, the impact of beta values on SUVs (SUVmax, SUVmean, SUVpeak) of small pulmonary nodules was evaluated. Subjective image analysis was performed by two experienced readers. With the increasing of beta values, RC, CR, and BV decreased gradually in the phantom work. In the clinical study, SNR and CNR of both groups increased with the beta values (P < 0.001), although the sub‐centimeter group showed increases after the beta value reached over 700. In addition, highly significant negative correlations were observed between SUVs and beta values for both lesion‐size groups before the PVC (P < 0.001 for all). After the PVC, SUVpeak measured from the sub‐centimeter group was no significantly different among different beta values (P = 0.830). Our study suggests using SUVpeak as the quantification parameter with PVC performed to mitigate the effects of beta regularization. Beta values between 300 and 400 were preferred for pulmonary nodules smaller than 30 mm.
登录
查看更多内容
DOI：
10.4103/0972-3919.110688
发表时间：
2012-04
期刊：
Indian journal of nuclear medicine : IJNM : the official journal of the Society of Nuclear Medicine, India
影响因子：
--
作者：
Pandey AK;Sharma P;Pandey M;Aswathi K;Malhotra A;Kumar R
通讯作者：
Kumar R
影响因子：
1.3
作者：
KESSLER, RM;ELLIS, JR;EDEN, M
通讯作者：
EDEN, M
影响因子：
1.8
作者：
Nuyts, J;Bequé, D;Mortelmans, L
通讯作者：
Mortelmans, L
影响因子：
2.6
作者：
Howard, Brandon A.;Morgan, Rustain;Borges-Neto, Salvador
通讯作者：
Borges-Neto, Salvador
影响因子：
10.6
作者：
Dewalle-Vignion, Anne-Sophie;Betrouni, Nacim;Vermandel, Maximilien
通讯作者：
Vermandel, Maximilien