Examining the Influence of Digital Phantom Models in Virtual Imaging Trials for Tomographic Breast Imaging
Examining the Influence of Digital Phantom Models in Virtual Imaging Trials for Tomographic Breast Imaging
复制标题
检查数字体模模型在乳腺断层成像虚拟成像试验中的影响
DOI:
10.48550/arxiv.2402.00812
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发表时间:
2024
期刊:
影响因子:
--
通讯作者:
Mini Das
中科院分区:
文献类型:
--
作者:
Amareswararao Kavuri;Mini Das
Purpose: Digital phantoms are one of the key components of virtual imaging trials (VITs) that aims to assess and optimize new medical imaging systems and algorithms. However, these phantoms vary in their voxel resolution, appearance and structural details. This study aims to examine whether and how variations between digital phantoms influence system optimization with digital breast tomosynthesis (DBT) as a chosen modality. Methods: We selected widely used and open access digital breast phantoms generated with different methods. For each phantom type, we created an ensemble of DBT images to test acquisition strategies. Human observer localization ROC (LROC) was used to assess observer performance studies for each case. Noise power spectrum (NPS) was estimated to compare the phantom structural components. Further, we computed several gaze metrics to quantify the gaze pattern when viewing images generated from different phantom types. Results: Our LROC results show that the arc samplings for peak performance were approximately 2.5° and 6° in Bakic and XCAT breast phantoms respectively for 3-mm lesion detection task and indicate that system optimization outcomes from VITs can vary with phantom types and structural frequency components. Additionally, a significant correlation (p¡0.01) between gaze metrics and diagnostic performance suggests that gaze analysis can be used to understand and evaluate task difficulty in VITs. Conclusion: Our results point to the critical need to evaluate realism in digital phantoms as well as ensuring sufficient structural variations at spatial frequencies relevant to the signal size for an intended task. In addition, standardizing phantom generation and validation tools might aid in lower discrepancies among independently conducted VITs for system or algorithmic optimizations.
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影响因子:
3.8
作者:
Gifford,HowardC;Liang,Zhihua;Das,Mini
通讯作者:
Das,Mini
DOI:
10.1117/12.2294981
发表时间:
2018
期刊:
SPIE Medical Imaging : Physics of Imaging
影响因子:
--
作者:
Nisbett, William H;Kavuri, Amareswararo;Das, Mini
通讯作者:
Das, Mini
影响因子:
3.8
作者:
Z. Zhao;G. Gang;J. Siewerdsen
通讯作者:
Z. Zhao;G. Gang;J. Siewerdsen
影响因子:
3.8
作者:
SIDDON, RL
通讯作者:
SIDDON, RL
影响因子:
4.6
作者:
Nisbett, William H.;Kavuri, Amar;Das, Mini
通讯作者:
Das, Mini