Prof. Amir A. Amini Profile

Prof. Amir A. Amini

Professor and Endowed Chair in Bioimaging at Univ of Louisville

SPIE Involvement:

Conference Program Committee | Author

Area of Expertise:

MR Imaging of Flow and Motion , Image-Based Mechanics , Medical Image Analysis

Websites:

Company Website

Publications (37)

Proceedings Article | 2 April 2024 Poster + Paper

Segmentation of cerebral digital subtraction angiography (DSA) images in idiopathic intracranial hypertension and venous sinus stenosis: evaluating the efficacy of the segment anything model (SAM) and MedSAM

Amirkhosro Kazemi, Dale Ding, MJ Negahdar, Isaac Josh Abecassis, Amir Amini

Proceedings Volume 12930, 129302G (2024) https://doi.org/10.1117/12.3009709

KEYWORDS: Image segmentation, Data modeling, Angiography, Medical imaging, Image processing, Visualization, 3D modeling, Image analysis, Visual process modeling, Deep learning, Artificial neural networks, Neural networks

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Proceedings Article | 2 April 2024 Presentation + Paper

A denoising diffusion fluid flow generative model for stenotic pipe flows

Aryan Ghazipour, Amirkhosro Kazemi, Amir Amini

Proceedings Volume 12930, 1293009 (2024) https://doi.org/10.1117/12.3009713

KEYWORDS: Data modeling, Education and training, Diffusion, Statistical modeling, Simulations, Denoising, Sampling rates, Throat, Magnetic resonance imaging, 3D modeling

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Proceedings Article | 10 April 2023 Poster + Paper

Performance of a bank of 2D efficient-nets for benign/malignant classification of lung nodules in 3D thoracic x-ray CT scans

Tyler Settle, Benjamin Veasey, Albert Seow, Amir Amini

Proceedings Volume 12468, 124681G (2023) https://doi.org/10.1117/12.2657009

KEYWORDS: Lung, Feature extraction, Lung cancer, Computed tomography, Image classification, Education and training, Databases, X-rays, X-ray computed tomography, Visualization

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Proceedings Article | 10 April 2023 Poster + Paper

Estimation of hemodynamic parameters with deep-learning-based super-resolved 4D flow MRI velocity data

Amirkhosro Kazemi, Sean Callahan, Marcus Stoddard, Amir Amini

Proceedings Volume 12468, 124681H (2023) https://doi.org/10.1117/12.2657016

KEYWORDS: Magnetic resonance imaging, Interpolation, Deep learning, Hemodynamics, Blood circulation, Super resolution, Spatial resolution, Simulations, Temporal resolution, Image resolution, Artificial neural networks, Deep convolutional neural networks, Machine learning, CFD analysis, Fluid dynamics

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Proceedings Article | 4 April 2022 Poster + Paper

Reduced-order modeling of 4D flow MRI and CFD in stenotic flow using Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD)

Amirkhosro Kazemi, Marcus Stoddard, Amir Amini

Proceedings Volume 12036, 120361V (2022) https://doi.org/10.1117/12.2613383

KEYWORDS: Magnetic resonance imaging, Data modeling, Motion models, Matrices, Fluid dynamics, Computer simulations, Turbulence, Scanners, CFD analysis, Image processing

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Proceedings Article | 15 February 2021 Poster + Presentation + Paper

3D U-net for registration of lung nodules in longitudinal CT scans

Aryan Ghazipour, Benjamin Veasey, Albert Seow, Amir Amini

Proceedings Volume 11597, 115972S (2021) https://doi.org/10.1117/12.2581755

KEYWORDS: Lung, Computed tomography, 3D scanning, Magnetic resonance imaging, Lung cancer, Convolutional neural networks, Computer aided diagnosis and therapy, CAD systems, Brain

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Proceedings Article | 15 February 2021 Presentation + Paper

A 1D encoder-decoder deep network for pressure estimation from 4D flow MRI: in-vitro experiments

Ruponti Nath, Amirkhosro Kazemi, Sean Callahan, M. J. Negahdar, Marcus Stoddard, Amir Amini

Proceedings Volume 11600, 116000Y (2021) https://doi.org/10.1117/12.2582196

KEYWORDS: Magnetic resonance imaging, In vitro testing, Data modeling, Diagnostics, Computer simulations, Computational fluid dynamics

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Proceedings Article | 15 February 2021 Presentation + Paper

4D flow MRI and CFD simulations of pulsatile flow in a phantom model of arterial stenosis: visualizing the vortex dynamics

Amirkhosro Kazemi, Ruponti Nath, M. J. Negahdar, Marcus Stodddard, Amir Amini

Proceedings Volume 11600, 116001H (2021) https://doi.org/10.1117/12.2582312

KEYWORDS: Magnetic resonance imaging, Visualization, Visual process modeling, Computational fluid dynamics, Hemodynamics, Anisotropy

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Proceedings Article | 16 March 2020 Paper

3D U-Net for segmentation of pulmonary nodules in volumetric CT scans from multi-annotator truth estimation

William Funke, Benjamin Veasey, Jacek Zurada, Hichem Frigui, Amir Amini

Proceedings Volume 11314, 1131429 (2020) https://doi.org/10.1117/12.2548496

KEYWORDS: Image segmentation, Computed tomography, Lung, Lung cancer, 3D image processing, Convolutional neural networks

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Proceedings Article | 15 March 2019 Paper

A comparative study of graph search algorithms for segmenting coronary arteries from cine angiography

Benjamin Veasey, Shahab Ghafghazi, Amir Amini

Proceedings Volume 10953, 109531T (2019) https://doi.org/10.1117/12.2511988

KEYWORDS: Image segmentation, Angiography, Arteries, Image processing algorithms and systems, Image filtering, 3D image processing, X-rays, X-ray imaging, Quantitative analysis

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Proceedings Article | 15 March 2019 Paper

An MR compatible aortic arch phantom with calcific polymeric valves

Alex Henn, Sean Callahan, Michael Kendrick, Arash Kheradvar, Amir Amini

Proceedings Volume 10953, 109531L (2019) https://doi.org/10.1117/12.2511996

KEYWORDS: Magnetic resonance imaging, Polymers, Aorta, SolidWorks, Blood, Heart

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Proceedings Article | 12 March 2018 Paper

3D segmentation of the ascending and descending aorta from CT data via graph-cuts

Jungwon Cha, Alexander Henn, Marcus Stoddard, Amir Amini

Proceedings Volume 10578, 105781R (2018) https://doi.org/10.1117/12.2295967

KEYWORDS: Aorta, Image segmentation, Computed tomography, Tissues, 3D image processing, Binary data, Medical imaging, Computer engineering, Medicine, Magnetic resonance imaging

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Proceedings Article | 29 March 2016 Paper

3D segmentation of lung CT data with graph-cuts: analysis of parameter sensitivities

Jung won Cha, Neal Dunlap, Brian Wang, Amir Amini

Proceedings Volume 9788, 97882O (2016) https://doi.org/10.1117/12.2219897

KEYWORDS: Image segmentation, Lung, 3D image processing, X-ray computed tomography, Image processing algorithms and systems, Lung imaging, Radiotherapy, X-rays, Error analysis, Lung cancer, Binary data, Computed tomography

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Proceedings Article | 29 March 2013 Paper

A multimodal (MRI/ultrasound) cardiac phantom for imaging experiments

Vahid Tavakoli, Michael Kendrick, Mostafa Shakeri, Motaz Alshaher, Marcus Stoddard, Amir Amini

Proceedings Volume 8672, 867202 (2013) https://doi.org/10.1117/12.2008783

KEYWORDS: Heart, Ultrasonography, Tissues, Magnetic resonance imaging, Polymers, Echocardiography, Image segmentation, Connectors, Motion models, Manufacturing

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Proceedings Article | 29 March 2013 Paper

Strain as a novel index of regional pulmonary function from thoracic 4D CT images: in-vivo validation with tomographic SPECT ventilation and perfusion

Mohammadreza Negahdar, Neal Dunlap, Albert Zacarias, A. Cahid Civelek, Shiao Woo, Amir Amini

Proceedings Volume 8672, 867213 (2013) https://doi.org/10.1117/12.2009734

KEYWORDS: Single photon emission computed tomography, Lung, Computed tomography, X-ray computed tomography, Lung cancer, Tomography, X-rays, Radiotherapy, In vivo imaging, Optical flow

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Proceedings Article | 29 March 2013 Paper

Cardiac deformation analysis using 3D SinMod from 3D CSPAMM tagged MRI

Hui Wang, Amir Amini

Proceedings Volume 8672, 86720B (2013) https://doi.org/10.1117/12.2008426

KEYWORDS: 3D acquisition, 3D modeling, Data acquisition, Magnetic resonance imaging, Bandpass filters, 3D image processing, Modulation, Wavefronts, Linear filtering, Motion models

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Proceedings Article | 29 March 2013 Paper

Improved cardiac motion detection from ultrasound images using TDIOF: a combined B-mode/ tissue Doppler approach

Vahid Tavakoli, Marcus Stoddard, Amir Amini

Proceedings Volume 8672, 86720C (2013) https://doi.org/10.1117/12.2008781

KEYWORDS: Doppler effect, Speckle, Optical flow, 3D modeling, Ultrasonography, Tissues, In vivo imaging, Motion models, Heart, 3D image processing

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Proceedings Article | 29 March 2013 Paper

Comparison of Cartesian, UTE radial, and spiral phase-contrast MRI in measurement of blood flow in extracranial carotid arteries: normal subjects

MJ Negahdar, Mo Kadbi, Vahid Tavakoli, Jens Heidenreich, Amir Amini

Proceedings Volume 8672, 86720A (2013) https://doi.org/10.1117/12.2007438

KEYWORDS: Arteries, Magnetic resonance imaging, Computer programming, Independent component analysis, Phase contrast, Blood circulation, Simulation of CCA and DLA aggregates, Phase measurement, Data acquisition, Signal to noise ratio

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Proceedings Article | 18 April 2012 Paper

Comparison of relative pressures calculated from PC-MRI and SPIV with catheter-based pressure measurements in a stenotic phantom model

Iman Khodarahmi, Mostafa Shakeri, Melanie Kotys-Traughber, Michael Sharp, Amir Amini

Proceedings Volume 8317, 83170E (2012) https://doi.org/10.1117/12.914716

KEYWORDS: Magnetic resonance imaging, Throat, Velocity measurements, Cameras, Arteries, Particle image velocimetry, Angiography, 3D modeling, Instrument modeling, Computer programming

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Proceedings Article | 16 April 2012 Paper

A 3D optical flow technique based on mass conservation for deformable motion estimation from 4-D CT images of the lung

Mohammadreza Negahdar, Amir Amini

Proceedings Volume 8317, 83171F (2012) https://doi.org/10.1117/12.912628

KEYWORDS: Optical flow, Lung, Motion estimation, X-ray computed tomography, Image registration, 3D image processing, Medical imaging, Computed tomography, 3D modeling, X-ray imaging

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Proceedings Article | 16 April 2012 Paper

An automated landmark-based elastic registration technique for large deformation recovery from 4-D CT lung images

Mohammadreza Negahdar, Albert Zacarias, Rebecca Milam, Neal Dunlap, Shiao Woo, Amir Amini

Proceedings Volume 8317, 83171G (2012) https://doi.org/10.1117/12.912754

KEYWORDS: Image registration, Lung, Computed tomography, 3D modeling, Radiotherapy, Image segmentation, Data modeling, Tumors, Algorithm development, Lung cancer

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Proceedings Article | 16 March 2011 Paper

Cine phase-contrast MRI measurement of CSF flow in the cervical spine: a pilot study in patients with spinal cord injury

MJ Negahdar, M. Shakeri, E. McDowell, J. Wells, T. Vitaz, S. Harkema, A. Amini

Proceedings Volume 7965, 79652D (2011) https://doi.org/10.1117/12.881715

KEYWORDS: Injuries, Spinal cord, Spine, Magnetic resonance imaging, Brain, Image processing, Image segmentation, Diagnostics, Software development, Human-machine interfaces

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Proceedings Article | 16 March 2011 Paper

The effect of PSF spatial-variance and nonlinear transducer geometry on motion estimation from echocardiography

Vahid Tavakoli, Amir Amini

Proceedings Volume 7965, 79651K (2011) https://doi.org/10.1117/12.878617

KEYWORDS: Motion estimation, Point spread functions, Transducers, Ultrasonography, Optical flow, Echocardiography, Tissues, Signal detection, Convolution, Computer simulations

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Proceedings Article | 16 March 2011 Paper

Cardiac motion tracking with multilevel B-splines and SinMod from tagged MRI

Hui Wang, Amir Amini

Proceedings Volume 7965, 796520 (2011) https://doi.org/10.1117/12.878825

KEYWORDS: Magnetic resonance imaging, Data modeling, Motion models, In vivo imaging, Fourier transforms, Bandpass filters, Tissues, Motion measurement, Distance measurement, Kinematics

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Proceedings Article | 9 March 2010 Paper

Tracking planar lung motion in 4D CT with optical flow: validations and comparison of global, local, and local-global methods

Mohammadreza Negahdar, Amir Amini

Proceedings Volume 7626, 762623 (2010) https://doi.org/10.1117/12.846003

KEYWORDS: Lung, Optical flow, Motion estimation, Image registration, Computed tomography, Optical tracking, Tumors, 4D CT imaging, X-ray computed tomography, Medical imaging

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Proceedings Article | 9 March 2010 Paper

Comparison of myocardial motion estimation methods based on simulated echocardiographic B-mode and RF data

Vahid Tavakoli, Jamie Kemp, Buddha Dawn, Marcus Stoddard, Amir Amini

Proceedings Volume 7626, 76260N (2010) https://doi.org/10.1117/12.845698

KEYWORDS: Point spread functions, Motion models, Motion estimation, Optical flow, Echocardiography, Computer simulations, 3D modeling, Data modeling, Kinematics, Transducers

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Proceedings Article | 9 March 2010 Paper

Accurate 2D cardiac motion tracking using scattered data fitting incorporating phase information from MRI

Hui Wang, Amir Amini

Proceedings Volume 7626, 76260M (2010) https://doi.org/10.1117/12.846390

KEYWORDS: Magnetic resonance imaging, Data modeling, Motion models, Tissues, Motion measurement, In vivo imaging, Heart, Fourier transforms, Information fusion, Bandpass filters

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Proceedings Article | 9 March 2010 Paper

Optical imaging of steady flow in a phantom model of iliac artery stenosis: comparison of CFD simulations with PIV measurements

Mostafa Shakeri, Iman Khodarahmi, M. Keith Sharp, Amir Amini

Proceedings Volume 7626, 76260L (2010) https://doi.org/10.1117/12.846324

KEYWORDS: Throat, Arteries, Particles, Velocity measurements, Cameras, Computer simulations, 3D modeling, Medical imaging, Optical imaging, Imaging systems

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Proceedings Article | 16 March 2006 Paper

Accurate recovery of 4D left ventricular deformations using volumetric B-splines incorporating phase based displacement estimates

Jian Chen, Nicholas Tustison, Amir Amini

Proceedings Volume 6143, 61432Q (2006) https://doi.org/10.1117/12.655668

KEYWORDS: Data modeling, 3D modeling, Magnetic resonance imaging, Solids, Motion models, Image restoration, 3D image processing, Electroluminescent displays, Heart, Medical imaging

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Proceedings Article | 13 March 2006 Paper

Pulsatile pressure measurements via harmonics-based orthogonal projection of noisy pressure gradients

Yuehuan Wang, Abbas Moghaddam, Geoffrey Behrens, Nasser Fatouraee, Juan Cebral, Eric Choi, Amir Amini

Proceedings Volume 6143, 61430C (2006) https://doi.org/10.1117/12.657162

KEYWORDS: Electroluminescent displays, Data modeling, Magnetic resonance imaging, In vitro testing, Computing systems, Solid modeling, Computer simulations, Blood, Signal to noise ratio, Iterative methods

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Proceedings Article | 14 April 2005 Paper

Comparison of parallel and spiral tagged MRI geometries in estimation of 3-D myocardial strains

Nicholas Tustison, Amir Amini

Proceedings Volume 5746, (2005) https://doi.org/10.1117/12.597102

KEYWORDS: Magnetic resonance imaging, Data modeling, Motion models, In vivo imaging, Image segmentation, Motion measurement, Tissues, Solids, Medical imaging, 3D image processing

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Proceedings Article | 14 April 2005 Paper

Lagrangian and Eulerian biventricular strains from anatomical NURBS models using tagged MRI

Nicholas Tustison, Amir Amini

Proceedings Volume 5746, (2005) https://doi.org/10.1117/12.597106

KEYWORDS: Data modeling, 3D modeling, Magnetic resonance imaging, Tissues, Heart, Performance modeling, Computer programming, Motion models, Motion measurement, Medical imaging

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Proceedings Article | 30 April 2004 Paper

Quantifying vascular structures in MRA images using hybrid PDE and geometric deformable models

Jian Chen, Amir Amini

Proceedings Volume 5369, (2004) https://doi.org/10.1117/12.535883

KEYWORDS: Image segmentation, 3D modeling, 3D image processing, 3D image enhancement, Image enhancement, Electroluminescent displays, Tissues, Data modeling, Medical imaging, 3D metrology

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Proceedings Article | 30 April 2004 Paper

Myocardial kinematics based on tagged MRI from volumetric NURBS models

Nicholas Tustison, Amir Amini

Proceedings Volume 5369, (2004) https://doi.org/10.1117/12.533498

KEYWORDS: Data modeling, 3D modeling, Magnetic resonance imaging, Motion models, Tissues, Kinematics, Computer programming, Matrices, Statistical modeling, Motion measurement

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Proceedings Article | 2 May 2003 Paper

Fast method for computation of the static pressure field in stenotic geometries by PC MRI

Abbas Moghaddam, Nasser Fatouraee, Eric Choi, Amir Amini

Proceedings Volume 5031, (2003) https://doi.org/10.1117/12.480693

KEYWORDS: Magnetic resonance imaging, Gaussian filters, Signal to noise ratio, Blood, Imaging systems, Nonlinear filtering, Computer simulations, Fluid dynamics, Interference (communication), In vitro testing

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Proceedings Article | 24 April 2002 Paper

Markov random field model for 3D left-ventricular motion estimation from tagged MRI

Yasheng Chen, Amir Amini

Proceedings Volume 4683, (2002) https://doi.org/10.1117/12.463577

KEYWORDS: Solids, 3D modeling, Magnetic resonance imaging, Image filtering, Solid modeling, Statistical modeling, Motion models, 3D image processing, Motion estimation, Tissues

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Proceedings Article | 20 May 1999 Paper

Volumetric motion tracking of the left ventricle of the heart from tagged MRI by a B-spline solid model

Jiantao Huang, Amir Amini

Proceedings Volume 3660, (1999) https://doi.org/10.1117/12.349624

KEYWORDS: Solids, 3D modeling, Heart, Motion models, Magnetic resonance imaging, Data modeling, Tissues, Analytical research, 3D image processing, Image analysis

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Showing 5 of 37 publications

Proceedings Volume Editor (4)

SPIE Conference Volume | 8 March 2006

Medical Imaging 2006: Physiology, Function, and Structure from Medical Images

SPIE Conference Volume | 14 April 2005

Medical Imaging 2005: Physiology, Function, and Structure from Medical Images

SPIE Conference Volume | 30 April 2004

Medical Imaging 2004: Physiology, Function, and Structure from Medical Images

SPIE Conference Volume | 2 May 2003

Medical Imaging 2003: Physiology and Function: Methods, Systems, and Applications

Conference Committee Involvement (25)

Clinical and Biomedical Imaging

16 February 2025 | San Diego, California, United States

Clinical and Biomedical Imaging

20 February 2024 | San Diego, California, United States