Search Results - "Segars, W. Paul"

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

Authors: Abadi, Ehsan Segars, W. Paul Felice, Nicholas et al.

Source: Medical Physics. Apr2025, Vol. 52 Issue 4, p1978-1990. 13p.

Subjects: Computed tomography, Image analysis, Computer-assisted image analysis (Medicine), Digital image processing

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

Authors: Sotoudeh‐Paima, Saman Segars, W. Paul Ghosh, Dhrubajyoti et al.

Source: Medical Physics. Apr2024, Vol. 51 Issue 4, p2893-2904. 12p.

Subjects: Lungs, Computed tomography, Human experimentation, Density

Improved Dynamic Cardiac Phantom Based on 4D NURBS and Tagged MRI.

Authors: Segars, W. Paul Lalush, David S. Frey, Eric C.

Source: IEEE Transactions on Nuclear Science; October 2009 pt1, Vol. 56 Issue 5, p2728-2738, 11p

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

Authors: Tian, Xiaoyu Li, Xiang Segars, W. Paul et al.

Source: Medical Physics. Apr2015, Vol. 42 Issue 4, p1575-1585. 11p.

Subjects: Computed tomography, Estimation theory, Electric current measurement, Diagnostic imaging, Radiation doses

An Observer Study Methodology for Evaluating Detection of Motion Abnormalities in Gated Myocardial Perfusion SPECT.

Authors: Lalush, David S. Jatko, Megan K. Segars, W. Paul

Source: IEEE Transactions on Biomedical Engineering; March 2005, Vol. 52 Issue 3, p480-485, 6p

Study of the Efficacy of Respiratory Gating in Myocardial SPECT Using the New 4-D NCAT Phantom.

Authors: Segars, W. Paul Tsui, Benjamin M. W.

Source: IEEE Transactions on Nuclear Science; June 2002 pt1, Vol. 49 Issue 3, p675-679, 5p

Modeling respiratory mechanics in the MCAT and spline-based MCAT phantoms.

Authors: Segars, W. Paul Lalush, David S. Tsui, Benjamin M. W.

Source: IEEE Transactions on Nuclear Science; February 2001 pt1, Vol. 48 Issue 1, p89-97, 9p

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

Authors: Hsu, Christina M. L. Palmeri, Mark L. Segars, W. Paul et al.

Source: Medical Physics. Oct2011, Vol. 38 Issue 10, p5756-5770. 15p.

Subjects: Breast cancer, Imaging phantoms, Three-dimensional imaging, Medical imaging systems, Image compression, Finite element method, High resolution imaging, Computer simulation

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

Authors: Bin He Yong Du Segars, W. Paul et al.

Source: Medical Physics. Feb2009, Vol. 36 Issue 2, p612-619. 8p. 1 Color Photograph, 6 Charts.

Subjects: Radioimmunotherapy, Imaging systems, Thermal dosimetry, Drug dosage, Monte Carlo method

Volumetric soft tissue perfusion assessment on a region basis from x‐ray angiography images: Motion compensation.

Authors: Taguchi, Katsuyuki Subramanian, Shalini Faria, Andreia V. et al.

Source: Medical Physics. Jun2025, Vol. 52 Issue 6, p3785-3799. 15p.

Subjects: Motion compensation (Signal processing), Perfusion imaging, Minimally invasive procedures, Digital subtraction angiography, Tissue analysis, Imaging systems, Patient positioning

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

Authors: Li, Xiang Samei, Ehsan Segars, W. Paul et al.

Source: Medical Physics. Jan2011, Vol. 38 Issue 1, p397-407. 11p.

Subjects: Radiation doses, Cancer risk factors, Cancer tomography, Cancer patients, Estimation theory, Monte Carlo method, Medical imaging systems, Anthropometry, Radiation dosimetry

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

Authors: Taguchi, Katsuyuki Polster, Christoph Segars, W. Paul et al.

Source: Medical Physics. Aug2022, Vol. 49 Issue 8, p5038-5051. 14p.

Subjects: Photon detectors, Photon counting, Line integrals, Computed tomography, Cadmium telluride, Computer performance

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

Authors: Sahbaee, Pooyan Segars, W. Paul Samei, Ehsan

Source: Medical Physics. Jul2014, Vol. 41 Issue 7, p1-N.PAG. 12p.

Subjects: Estimation theory, Cohort analysis, Computed tomography, Monte Carlo method, Medical care, Neurology

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

Authors: Li, Christina M. Segars, W. Paul Tourassi, Georgia D. et al.

Source: Medical Physics. Jul2009, Vol. 36 Issue 7, p3122-3131. 10p. 1 Color Photograph, 6 Black and White Photographs, 1 Diagram, 3 Charts, 3 Graphs.

Subjects: Three-dimensional imaging, Medical imaging systems, Algorithms, Imaging systems, Breast imaging centers, Diagnostic imaging

Correction to: Comparison of 12 surrogates to characterize CT radiation risk across a clinical population.

Authors: Ria, Francesco Fu, Wanyi Hoye, Jocelyn et al.

Source: European Radiology. Oct2021, Vol. 31 Issue 10, p8068-8068. 1p.

Subjects: Radiation exposure, Computed tomography, Medical imaging systems, Scholarly periodical corrections, Health risk assessment, Comparative studies

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.

Authors: Taguchi, Katsuyuki Sauer, Thomas J. Segars, W. Paul et al.

Source: Medical Physics. Dec2020, Vol. 47 Issue 12, p6087-6102. 16p.

Subjects: Cone beam computed tomography, Proof of concept, Standard deviations, X-rays, Perfusion imaging

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

Authors: Sharma, Shobhit Kapadia, Anuj Ria, Francesco et al.

Source: Medical Physics. Aug2022, Vol. 49 Issue 8, p5439-5450. 12p.

Subjects: GE Healthcare Inc., Knee, Imaging phantoms, Child patients, Tomosynthesis, Radiation dosimetry, Graphics processing units, Adults

Geographic Terms: Waukesha (Wis.)

Comparison of 12 surrogates to characterize CT radiation risk across a clinical population.

Authors: Ria, Francesco Fu, Wanyi Hoye, Jocelyn et al.

Source: European Radiology. Sep2021, Vol. 31 Issue 9, p7022-7030. 9p. 5 Charts, 2 Graphs.

Subjects: Cone beam computed tomography, Radiation, Medical personnel

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

Authors: Hsu, Christina M. L. Palmeri, Mark L. Segars, W. Paul et al.

Source: Medical Physics. Apr2013, Vol. 40 Issue 4, p043703-N.PAG. 1p.

Subjects: Imaging phantoms, Image databases, Mammograms, Image quality in medical radiography, Radiation doses, Radiobiology, Finite element method

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

Authors: Zhang, Yakun Li, Xiang Segars, W. Paul et al.

Source: Medical Physics. Feb2014, Vol. 41 Issue 2, pn/a-N.PAG. 12p.

Subjects: Chest X rays, Radiology, Tomosynthesis, Radiation, Computed tomography