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Comparison of Channel Methods and Observer Models for the Task-Based Assessment of Multi-Projection Imaging in the Presence of Structured Anatomical Noise

Autor: George Z. Zhang, Kyle J. Myers, Subok Park

Publikováno v: IEEE Transactions on Medical Imaging. 35:1431-1442

Although Laguerre-Gauss (LG) channels are often used for the task-based assessment of multi-projection imaging, LG channels may not be the most reliable in providing performance trends as a function of system or object parameters for all situations.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::724f0d3b75c18b809fc47a36f0462489
https://doi.org/10.1109/tmi.2016.2515027

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Model observer for assessing digital breast tomosynthesis for multi-lesion detection in the presence of anatomical noise

Autor: Tamara Miner Haygood, Mia K. Markey, Gezheng Wen, Subok Park

Publikováno v: Physics in medicine and biology. 63(4)

Model observers are widely used in task-based assessments of medical image quality. The presence of multiple abnormalities in a single set of images, such as in multifocal multicentric breast cancer (MFMC), has an immense clinical impact on treatment

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c654e58c18cabd6b0ecdf24f3230079
https://pubmed.ncbi.nlm.nih.gov/29376838

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Evaluating the sensitivity of the optimization of acquisition geometry to the choice of reconstruction algorithm in digital breast tomosynthesis through a simulation study

Autor: Kyle J. Myers, Predrag R. Bakic, Rongping Zeng, Subok Park

Publikováno v: Physics in Medicine and Biology. 60:1259-1288

Due to the limited number of views and limited angular span in digital breast tomosynthesis (DBT), the acquisition geometry design is an important factor that affects the image quality. Therefore, intensive studies have been conducted regarding the o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b2611bcc0d28a715802a1aea8a4e3c0
https://doi.org/10.1088/0031-9155/60/3/1259

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Synthetic Breast Phantoms from Patient Based Eigenbreasts

Autor: Gregory M. Sturgeon, Joseph Y. Lo, Subok Park, William P. Segars

Purpose The limited number of 3D patient-based breast phantoms available could be augmented by synthetic breast phantoms in order to facilitate virtual clinical trials (VCTs) using model observers for breast imaging optimization and evaluation. Metho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::492a52b59df48c03446ea2ad463691d8
https://europepmc.org/articles/PMC5734634/

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Model observer design for multi-signal detection in the presence of anatomical noise

Autor: Gezheng Wen, Mia K. Markey, Subok Park

Publikováno v: Physics in medicine and biology. 62(4)

As psychophysical studies are resource-intensive to conduct, model observers are commonly used to assess and optimize medical imaging quality. Model observers are typically designed to detect at most one signal. However, in clinical practice, there m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69d93e435c3767e1f149d7145baf94d6
https://pubmed.ncbi.nlm.nih.gov/28114105

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Model Observers in Medical Imaging Research

Autor: Xin He, Subok Park

Publikováno v: Theranostics

Model observers play an important role in the optimization and assessment of imaging devices. In this review paper, we first discuss the basic concepts of model observers, which include the mathematical foundations and psychophysical considerations i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e2b90f3fa7f83c96e8d53248248d3ca
https://doi.org/10.7150/thno.5138

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Model observer design for detecting multiple abnormalities in anatomical background images

Autor: Subok Park, Gezheng Wen, Mia K. Markey

Publikováno v: Medical Imaging: Image Perception, Observer Performance, and Technology Assessment

As psychophysical studies are resource-intensive to conduct, model observers are commonly used to assess and optimize medical imaging quality. Existing model observers were typically designed to detect at most one signal. However, in clinical practic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53f1c2f17f318206b5678ddb0d3d3d67
https://doi.org/10.1117/12.2217665

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Effect of anatomical backgrounds on detectability in volumetric cone beam CT images

Autor: Minah Han, Subok Park, Jongduk Baek

Publikováno v: Medical Imaging: Image Perception, Observer Performance, and Technology Assessment

As anatomical noise is often a dominating factor affecting signal detection in medical imaging, we investigate the effects of anatomical backgrounds on signal detection in volumetric cone beam CT images. Signal detection performances are compared bet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::126fa2f265fcdef2cbc1c877aa766f5d
https://doi.org/10.1117/12.2214689

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Eigenbreasts for statistical breast phantoms

Autor: J. T. Ratnanather, Subok Park, Michael D. Ketcha, Gregory M. Sturgeon, Michael I. Miller, Daniel J. Tward, William P. Segars, Joseph Y. Lo

Publikováno v: SPIE Proceedings.

To facilitate rigorous virtual clinical trials using model observers for breast imaging optimization and evaluation, we demonstrated a method of defining statistical models, based on 177 sets of breast CT patient data, in order to generate tens of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e526e430613a50a2561f2fec01c4077
https://doi.org/10.1117/12.2216398

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