Works matching AU Segars, Paul

Results: 54

AAPM Truth‐based CT (TrueCT) reconstruction grand challenge.

Published in:

Medical Physics, 2025, v. 52, n. 4, p. 1978, doi. 10.1002/mp.17619

By:

Abadi, Ehsan;
Segars, W. Paul;
Felice, Nicholas;
Sotoudeh‐Paima, Saman;
Hoffman, Eric A.;
Wang, Xiao;
Wang, Wei;
Clark, Darin;
Ye, Siqi;
Jadick, Giavanna;
Fryling, Milo;
Frush, Donald P.;
Samei, Ehsan

Publication type:

Article

Breast radiation therapy fluence painting with multi‐agent deep reinforcement learning.

Published in:

Medical Physics, 2025, v. 52, n. 4, p. 2015, doi. 10.1002/mp.17615

By:

Dongrong, Yang;
Xinyi, Li;
Sua, Yoo;
Rachel, Blitzblau;
Susan, McDuff;
Sarah, Stephens;
Paul, Segars;
Q Jackie, Wu;
Yang, Sheng

Publication type:

Article

Virtual imaging trials in medicine: A brief takeaway of the lessons from the first international summit.

Published in:

Medical Physics, 2025, v. 52, n. 3, p. 1950, doi. 10.1002/mp.17587

By:

Samei, Ehsan;
Abadi, Ehsan;
Bakic, Predrag;
Bliznakova, Kristina;
Bosmans, Hilde;
Carton, Ann‐Katherine;
Frangi, Alejandro F.;
Glick, Stephen;
Lo, Joseph Y.;
Kinahan, Paul;
Maidment, Andrew;
Ria, Francesco;
Sechopoulos, Ioannis;
Segars, William Paul;
Tanaka, Rie;
Vancoillie, Liesbeth

Publication type:

Article

Estimation of threshold thickness of residual normal tissue in lung dysfunction detectable by dynamic chest radiography: A virtual imaging trial.

Published in:

Medical Physics, 2024, v. 51, n. 9, p. 5978, doi. 10.1002/mp.17271

By:

Yamaguchi, Shunya;
Tanaka, Rie;
Matsumoto, Isao;
Ohkura, Noriyuki;
Segars, William Paul;
Abadi, Ehsan;
Samei, Ehsan

Publication type:

Article

A systematic assessment and optimization of photon‐counting CT for lung density quantifications.

Published in:

Medical Physics, 2024, v. 51, n. 4, p. 2893, doi. 10.1002/mp.16987

By:

Sotoudeh‐Paima, Saman;
Segars, W. Paul;
Ghosh, Dhrubajyoti;
Luo, Sheng;
Samei, Ehsan;
Abadi, Ehsan

Publication type:

Article

Effect of tin spectral filtration on organ and effective dose in CT colonography and CT lung cancer screening.

Published in:

Medical Physics, 2024, v. 51, n. 1, p. 103, doi. 10.1002/mp.16836

By:

Fong, Grant;
Herts, Brian;
Primak, Andrew;
Segars, Paul;
Li, Xiang

Publication type:

Article

Development and CT image‐domain validation of a computational lung lesion model for use in virtual imaging trials.

Published in:

Medical Physics, 2023, v. 50, n. 7, p. 4366, doi. 10.1002/mp.16222

By:

Sauer, Thomas J.;
Bejan, Adrian;
Segars, Paul;
Samei, Ehsan

Publication type:

Article

A model for gastrointestinal tract motility in a 4D imaging phantom of human anatomy.

Published in:

Medical Physics, 2023, v. 50, n. 5, p. 3066, doi. 10.1002/mp.16305

By:

Subashi, Ergys;
Segars, Paul;
Veeraraghavan, Harini;
Deasy, Joseph;
Tyagi, Neelam

Publication type:

Article

Dose coefficients for organ dosimetry in tomosynthesis imaging of adults and pediatrics across diverse protocols.

Published in:

Medical Physics, 2022, v. 49, n. 8, p. 5439, doi. 10.1002/mp.15798

By:

Sharma, Shobhit;
Kapadia, Anuj;
Ria, Francesco;
Segars, W. Paul;
Samei, Ehsan

Publication type:

Article

Model‐based pulse pileup and charge sharing compensation for photon counting detectors: A simulation study.

Published in:

Medical Physics, 2022, v. 49, n. 8, p. 5038, doi. 10.1002/mp.15779

By:

Taguchi, Katsuyuki;
Polster, Christoph;
Segars, W. Paul;
Aygun, Nafi;
Stierstorfer, Karl

Publication type:

Article

Generative learning approach for radiation dose reduction in X‐ray guided cardiac interventions.

Published in:

Medical Physics, 2022, v. 49, n. 6, p. 4071, doi. 10.1002/mp.15654

By:

Azizmohammadi, Fariba;
Navarro Castellanos, Iñaki;
Miró, Joaquim;
Segars, Paul;
Samei, Ehsan;
Duong, Luc

Publication type:

Article

Anatomically and physiologically informed computational model of hepatic contrast perfusion for virtual imaging trials.

Published in:

Medical Physics, 2022, v. 49, n. 5, p. 2938, doi. 10.1002/mp.15562

By:

Sauer, Thomas J.;
Abadi, Ehsan;
Segars, Paul;
Samei, Ehsan

Publication type:

Article

A GPU‐accelerated framework for individualized estimation of organ doses in digital tomosynthesis.

Published in:

Medical Physics, 2022, v. 49, n. 2, p. 891, doi. 10.1002/mp.15400

By:

Sharma, Shobhit;
Kapadia, Anuj;
Brown, Justin;
Segars, William Paul;
Bolch, Wesley;
Samei, Ehsan

Publication type:

Article

Assessment of pleural invasion and adhesion of lung tumors with dynamic chest radiography: A virtual clinical imaging study.

Published in:

Medical Physics, 2021, v. 48, n. 4, p. 1616, doi. 10.1002/mp.14750

By:

Tanaka, Rie;
Samei, Ehsan;
Segars, William Paul;
Abadi, Ehsan;
Matsumoto, Isao;
Tamura, Masaya;
Takata, Munehisa;
Yamashiro, Tsuneo

Publication type:

Article

Three‐dimensional regions‐of‐interest–based intra‐operative four‐dimensional soft tissue perfusion imaging using a standard x‐ray system with no gantry rotation: A simulation study for a proof of concept.

Published in:

Medical Physics, 2020, v. 47, n. 12, p. 6087, doi. 10.1002/mp.14514

By:

Taguchi, Katsuyuki;
Sauer, Thomas J.;
Segars, W. Paul;
Frey, Eric C.;
Xu, Jingyan;
Liapi, Eleni;
Stayman, J. Webster;
Hong, Kelvin;
Hui, Ferdinand K.;
Unberath, Mathias;
Du, Yong

Publication type:

Article

A database of 40 patient‐based computational models for benchmarking organ dose estimates in CT.

Published in:

Medical Physics, 2020, v. 47, n. 12, p. 6562, doi. 10.1002/mp.14373

By:

Samei, Ehsan;
Ria, Francesco;
Tian, Xiaoyu;
Segars, Paul W.

Publication type:

Article

Organ doses from CT localizer radiographs: Development, validation, and application of a Monte Carlo estimation technique.

Published in:

Medical Physics, 2019, v. 46, n. 11, p. 5262, doi. 10.1002/mp.13781

By:

Hoye, Jocelyn;
Sharma, Shobhit;
Zhang, Yakun;
Fu, Wanyi;
Ria, Francesco;
Kapadia, Anuj;
Segars, W. Paul;
Wilson, Joshua;
Samei, Ehsan

Publication type:

Article

Synthetic breast phantoms from patient based eigenbreasts.

Published in:

Medical Physics, 2017, v. 44, n. 12, p. 6270, doi. 10.1002/mp.12579

By:

Sturgeon, Gregory M.;
Park, Subok;
Segars, William Paul;
Lo, Joseph Y.

Publication type:

Article

CT breast dose reduction with the use of breast positioning and organ-based tube current modulation.

Published in:

Medical Physics, 2017, v. 44, n. 2, p. 665, doi. 10.1002/mp.12076

By:

Fu, Wanyi;
Tian, Xiaoyu;
Sturgeon, Gregory M.;
Agasthya, Greeshma;
Segars, William Paul;
Goodsitt, Mitchell M.;
Kazerooni, Ella A.;
Samei, Ehsan

Publication type:

Article

Population of 224 realistic human subject-based computational breast phantoms.

Published in:

Medical Physics, 2016, v. 43, n. 1, p. 23, doi. 10.1118/1.4937597

By:

Erickson, David W.;
Wells, Jered R.;
Sturgeon, Gregory M.;
Samei, Ehsan;
Dobbins, James T.;
Segars, W. Paul;
Lo, Joseph Y.

Publication type:

Article

Adult abdomen-pelvis CT: Does equilibrium dose-pitch product better account for the kVp dependence of organ dose than conventional CTDI?

Published in:

Medical Physics, 2015, v. 42, n. 11, p. 6258, doi. 10.1118/1.4932222

By:

Xiang Li;
Morgan, Ashraf G.;
Liptak, Christopher L.;
Muryn, John S.;
Dong, Frank F.;
Primak, Andrew N.;
Segars, W. Paul

Publication type:

Article

Prospective estimation of organ dose in CT under tube current modulation.

Published in:

Medical Physics, 2015, v. 42, n. 4, p. 1575, doi. 10.1118/1.4907955

By:

Tian, Xiaoyu;
Li, Xiang;
Segars, W. Paul;
Frush, Donald P.;
Samei, Ehsan

Publication type:

Article

Radiation dosimetry in digital breast tomosynthesis: Report of AAPM Tomosynthesis Subcommittee Task Group 223.

Published in:

Medical Physics, 2014, v. 41, n. 9, p. 1, doi. 10.1118/1.4892600

By:

Sechopoulos, Ioannis;
Sabol, John M.;
Berglund, Johan;
Bolch, Wesley E.;
Brateman, Libby;
Christodoulou, Emmanuel;
Flynn, Michael;
Geiser, William;
Goodsitt, Mitchell;
Kyle Jones, A.;
Lo, Joseph Y.;
Maidment, Andrew D. A.;
Nishino, Kazuyoshi;
Nosratieh, Anita;
Ren, Baorui;
Paul Segars, W.;
Von Tiedemann, Miriam

Publication type:

Article

Patient-based estimation of organ dose for a population of 58 adult patients across 13 protocol categories.

Published in:

Medical Physics, 2014, v. 41, n. 7, p. 1, doi. 10.1118/1.4883778

By:

Sahbaee, Pooyan;
Segars, W. Paul;
Samei, Ehsan

Publication type:

Article

Assessment of individual organ doses in a realistic human phantom from neutron and gamma stimulated spectroscopy of the breast and liver.

Published in:

Medical Physics, 2014, v. 41, n. 6, p. 1, doi. 10.1118/1.4873684

By:

Belley, Matthew D.;
Segars, William Paul;
Kapadia, Anuj J.

Publication type:

Article

Comparison of patient specific dose metrics between chest radiography, tomosynthesis, and CT for adult patients of wide ranging body habitus.

Published in:

Medical Physics, 2014, v. 41, n. 2, p. n/a, doi. 10.1118/1.4859315

By:

Zhang, Yakun;
Li, Xiang;
Segars, W. Paul;
Samei, Ehsan

Publication type:

Article

A technique for estimating 4D-CBCT using prior knowledge and limited-angle projections.

Published in:

Medical Physics, 2013, v. 40, n. 12, p. 121701, doi. 10.1118/1.4825097

By:

Zhang, You;
Yin, Fang Fang;
Segars, W. Paul;
Ren, Lei

Publication type:

Article

Patient Specific Dosimetry Phantoms Using Multichannel LDDMM of the Whole Body.

Published in:

International Journal of Biomedical Imaging, 2011, p. 1, doi. 10.1155/2011/481064

By:

Tward, Daniel J.;
Ceritoglu, Can;
Kolasny, Anthony;
Sturgeon, GregoryM.;
Segars, W. Paul;
Miller, Michael I.;
Ratnanather, J. Tilak

Publication type:

Article

Establishing a framework to implement 4D XCAT Phantom for 4D radiotherapy research.

Published in:

Journal of Cancer Research & Therapeutics, 2012, v. 8, n. 4, p. 565, doi. 10.4103/0973-1482.106539

By:

Panta, Raj K.;
Segars, Paul;
Yin, Fang-Fang;
Jing Cai

Publication type:

Article

Coronary stenosis quantification in cardiac computed tomography angiography: multi-factorial optimization of image quality and radiation dose.

Published in:

Journal of Medical Imaging, 2023, v. 10, n. 6, p. 63502, doi. 10.1117/1.JMI.10.6.063502

By:

Zarei, Mojtaba;
Abadi, Ehsan;
Segars, William Paul;
Samei, Ehsan

Publication type:

Article

Quantification of uncertainty in the assessment of coronary plaque in CCTA through a dynamic cardiac phantom and 3D-printed plaque model.

Published in:

Journal of Medical Imaging, 2018, v. 5, n. 1, p. 013501-1, doi. 10.1117/1.JMI.5.1.013501

By:

Richards, Taylor;
Sturgeon, Gregory M.;
Ramirez-Giraldo, Juan Carlos;
Rubin, Geoffrey D.;
Koweek, Lynne Hurwitz;
Segars, William Paul;
Samei, Ehsan

Publication type:

Article

Breast dose reduction with organ-based, wide-angle tube current modulated CT.

Published in:

Journal of Medical Imaging, 2017, v. 4, n. 3, p. 031208-1, doi. 10.1117/1.JMI.4.3.031208

By:

Wanyi Fu;
Sturgeon, Gregory M.;
Agasthya, Greeshma;
Segars, William Paul;
Kapadia, Anuj J.;
Samei, Ehsan

Publication type:

Article

Organ dose variability and trends in tomosynthesis and radiography.

Published in:

Journal of Medical Imaging, 2017, v. 4, n. 3, p. 031207-1, doi. 10.1117/1.JMI.4.3.031207

By:

Hoye, Jocelyn;
Yakun Zhang;
Agasthya, Greeshma;
Sturgeon, Greg;
Kapadia, Anuj;
Segars, W. Paul;
Sameia, Ehsan

Publication type:

Article

Automated, patient-specific estimation of regional imparted energy and dose from tube current modulated computed tomography exams across 13 protocols.

Published in:

Journal of Medical Imaging, 2017, v. 4, n. 1, p. 1, doi. 10.1117/1.JMI.4.1.013503

By:

Sanders, Jeremiah;
Xiaoyu Tian;
Segars, William Paul;
Boone, John;
Samei, Ehsan

Publication type:

Article

Impact of breast structure on lesion detection in breast tomosynthesis, a simulation study.

Published in:

Journal of Medical Imaging, 2016, v. 3, n. 3, p. 1, doi. 10.1117/1.JMI.3.3.035504

By:

Kiarashi, Nooshin;
Nolte, Loren W.;
Lo, Joseph Y.;
Segars, W. Paul;
Ghate, Sujata V.;
Solomon, Justin B.;
Samei, Ehsan

Publication type:

Article

Determination of contrast media administration to achieve a targeted contrast enhancement in computed tomography.

Published in:

Journal of Medical Imaging, 2016, v. 3, n. 1, p. 1, doi. 10.1117/1.JMI.3.1.013501

By:

Sahbaee, Pooyan;
Segars, Paul P.;
Marin, Daniele;
Nelson, Rendon;
Samei, Ehsan

Publication type:

Article

RADAR Reference Adult, Pediatric, and Pregnant Female Phantom Series for Internal and External Dosimetry.

Published in:

Journal of Nuclear Medicine, 2012, v. 53, n. 11, p. 1807, doi. 10.2967/jnumed.112.106138

By:

Stabin, Michael G.;
Xu, X. George;
Emmons, Mary A.;
Segars, W. Paul;
Chengyu Shi;
Fernald, Michael J.

Publication type:

Article

Anthropometry‐based generation of personalized and population‐specific human airway models.

Published in:

International Journal for Numerical Methods in Biomedical Engineering, 2020, v. 36, n. 5, p. 1, doi. 10.1002/cnm.3324

By:

Kannan, Ravishekar;
Chen, ZJ;
Przekwas, Andrzej;
Segars, Paul;
Martin, Florian;
Kuczaj, Arkadiusz K.;
Hoeng, Julia

Publication type:

Article

Unsupervised synthesis of realistic coronary artery X-ray angiogram.

Published in:

International Journal of Computer Assisted Radiology & Surgery, 2023, v. 18, n. 12, p. 2329, doi. 10.1007/s11548-023-02982-3

By:

Martin, Rémi;
Segars, Paul;
Samei, Ehsan;
Miró, Joaquim;
Duong, Luc

Publication type:

Article

Radiation risk index for pediatric CT: a patient-derived metric.

Published in:

2017

By:

Samei, Ehsan;
Tian, Xiaoyu;
Paul Segars, W.;
Frush, Donald;
Frush, Donald P

Publication type:

journal article

Realistic phantoms to characterize dosimetry in pediatric CT.

Published in:

2017

By:

Carver, Diana E;
Kost, Susan D;
Fraser, Nicholas D;
Segars, W Paul;
Pickens, David R;
Price, Ronald R;
Stabin, Michael G

Publication type:

journal article

Generation of a suite of 3D computer-generated breast phantoms from a limited set of human subject data.

Published in:

Medical Physics, 2013, v. 40, n. 4, p. 043703, doi. 10.1118/1.4794924

By:

Hsu, Christina M. L.;
Palmeri, Mark L.;
Segars, W. Paul;
Veress, Alexander I.;
Dobbins, James T.

Publication type:

Article

Effects of protocol and obesity on dose conversion factors in adult body CT.

Published in:

Medical Physics, 2012, v. 39, n. 11, p. 6550, doi. 10.1118/1.4754584

By:

Li, Xiang;
Samei, Ehsan;
Williams, Cameron H.;
Segars, W. Paul;
Tward, Daniel J.;
Miller, Michael I.;
Ratnanather, J. Tilak;
Paulson, Erik K.;
Frush, Donald P.

Publication type:

Article

Organ doses, effective doses, and risk indices in adult CT: Comparison of four types of reference phantoms across different examination protocols.

Published in:

Medical Physics, 2012, v. 39, n. 6, p. 3404, doi. 10.1118/1.4718710

By:

Zhang, Yakun;
Li, Xiang;
Paul Segars, W.;
Samei, Ehsan

Publication type:

Article

Four-dimensional magnetic resonance imaging (4D-MRI) using image-based respiratory surrogate: A feasibility study.

Published in:

Medical Physics, 2011, v. 38, n. 12, p. 6384, doi. 10.1118/1.3658737

By:

Cai, Jing;
Chang, Zheng;
Wang, Zhiheng;
Paul Segars, William;
Yin, Fang-Fang

Publication type:

Article

An analysis of the mechanical parameters used for finite element compression of a high-resolution 3D breast phantom.

Published in:

Medical Physics, 2011, v. 38, n. 10, p. 5756, doi. 10.1118/1.3637500

By:

Hsu, Christina M. L.;
Palmeri, Mark L.;
Segars, W. Paul;
Veress, Alexander I.;
Dobbins, James T.

Publication type:

Article

Patient-specific radiation dose and cancer risk estimation in CT: Part I. Development and validation of a Monte Carlo program.

Published in:

Medical Physics, 2011, v. 38, n. 1, p. 397, doi. 10.1118/1.3515839

By:

Li, Xiang;
Samei, Ehsan;
Segars, W. Paul;
Sturgeon, Gregory M.;
Colsher, James G.;
Toncheva, Greta;
Yoshizumi, Terry T.;
Frush, Donald P.

Publication type:

Article

Patient-specific radiation dose and cancer risk estimation in CT: Part II. Application to patients.

Published in:

Medical Physics, 2011, v. 38, n. 1, p. 408, doi. 10.1118/1.3515864

By:

Li, Xiang;
Samei, Ehsan;
Segars, W. Paul;
Sturgeon, Gregory M.;
Colsher, James G.;
Toncheva, Greta;
Yoshizumi, Terry T.;
Frush, Donald P.

Publication type:

Article

Methodology for generating a 3D computerized breast phantom from empirical data.

Published in:

Medical Physics, 2009, v. 36, n. 7, p. 3122, doi. 10.1118/1.3140588

By:

Li, Christina M.;
Segars, W. Paul;
Tourassi, Georgia D.;
Boone, John M.;
Dobbins III, James T.

Publication type:

Article

Evaluation of quantitative imaging methods for organ activity and residence time estimation using a population of phantoms having realistic variations in anatomy and uptake.

Published in:

Medical Physics, 2009, v. 36, n. 2, p. 612, doi. 10.1118/1.3063156

By:

Bin He;
Yong Du;
Segars, W. Paul;
Wahl, Richard L.;
Sgouros, George;
Jacene, Heather;
Frey, Eric C.

Publication type:

Article