Search Results - "S.K. Fung, George"

Metal Artifact Reduction Computed Tomography of Arthroplasty Implants: Effects of Combined Modeled Iterative Reconstruction and Dual-Energy Virtual Monoenergetic Extrapolation at Higher Photon Energies by Khodarahmi, Iman, Haroun, Reham R, Lee, Moses, Fung, George S.K, Fuld, Matthew K, Schon, Lew C, Fishman, Elliot K, Fritz, Jan

“…OBJECTIVEThe aim of this study was to compare the effects of combined virtual monoenergetic extrapolation (VME) of dual-energy computed tomography data and…”
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A computational fluid dynamic study of stent graft remodeling after endovascular repair of thoracic aortic dissections by Cheng, Stephen W.K., MS, Lam, Edward S.K., MPh, Fung, George S.K., PhD, Ho, Pei, MB, BS, Ting, Albert C.W., MS, Chow, Kwok W., BS, PhD

“…Objectives Significant stent graft remodeling commonly occurs after endovascular repair of thoracic aortic dissections because of continuing expansion of the…”
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Optimization and evaluation of reconstruction-based compensation methods and reconstruction parameters for Tc-99m MIBI parathyroid SPECT by Ekjeen, Tawatchai, Tocharoenchai, Chiraporn, Pusuwan, Pawana, Fung, George S.K, Ghaly, Michael, Du, Yong, Frey, Eric C

“…Abstract The value of Tc-99m MIBI parathyroid SPECT for localizing parathyroid hyperplasia in chronic renal failure patients remains inconclusive due to…”
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On stent-graft models in thoracic aortic endovascular repair: A computational investigation of the hemodynamic factors by Fung, George S.K, Lam, S.K, Cheng, Stephen W.K, Chow, K.W

“…Abstract In treating thoracic aortic diseases, endovascular repair involves the placement of a self-expanding stent-graft system across the diseased thoracic…”
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Advances in PET myocardial perfusion imaging: F-18 labeled tracers by Rischpler, Christoph, Park, Min-Jae, Fung, George S. K., Javadi, Mehrbod, Tsui, Benjamin M. W., Higuchi, Takahiro

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The z‐sbDBA, a new concept for a dynamic sheet‐based fluence field modulator in x‐ray CT by Huck, Sascha Manuel, Fung, George S. K., Parodi, Katia, Stierstorfer, Karl

“…Purpose We present a new concept for dynamic fluence field modulation (FFM) in x‐ray computed tomography (CT). The so‐called z‐aligned sheet‐based dynamic beam…”
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Application of the 4-D XCAT Phantoms in Biomedical Imaging and Beyond by Segars, W. Paul, Tsui, B. M. W., Cai, Jing, Yin, Fang-Fang, Fung, George S. K., Samei, Ehsan

“…The four-dimensional (4-D) eXtended CArdiac-Torso (XCAT) series of phantoms was developed to provide accurate computerized models of the human anatomy and…”
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On the potential of ROI imaging in x‐ray CT – A comparison of novel dynamic beam attenuators with current technology by Huck, Sascha Manuel, Fung, George S.K., Parodi, Katia, Stierstorfer, Karl

“…Purpose In this work, we explore the potential of region‐of‐interest (ROI) imaging in x‐ray computed tomography (CT). Using two dynamic beam attenuator (DBA)…”
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A simple approach to measure computed tomography (CT) modulation transfer function (MTF) and noise-power spectrum (NPS) using the American College of Radiology (ACR) accreditation phantom by Friedman, Saul N., Fung, George S. K., Siewerdsen, Jeffrey H., Tsui, Benjamin M. W.

“…Purpose: To develop an easily-implemented technique with free publicly-available analysis software to measure the modulation transfer function (MTF) and…”
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Technical Note: Sheet‐based dynamic beam attenuator – A novel concept for dynamic fluence field modulation in x‐ray CT by Huck, Sascha Manuel, Fung, George S. K., Parodi, Katia, Stierstorfer, Karl

“…Purpose It has been a long‐standing wish in computed tomography (CT) to compensate the emitted x‐ray beam intensity for the patient's changing attenuation…”
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Moment-based fast discrete Hartley transform by Liu, J.G., Chan, F.H.Y., Lam, F.K., Li, H.F., S.K. Fung, George

“…A novel approach to compute the discrete Hartley transform (DHT) is proposed. By using a modular mapping, DHT is approximated by the sum of a finite sequence…”
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Application of the 4D XCAT Phantoms in Biomedical Imaging and Beyond by Segars, W. Paul, Tsui, B.M.W., Cai, Jing, Yin, Fang-Fang, Fung, George S.K., Samei, Ehsan

“…The four dimensional (4D) eXtended CArdiac-Torso (XCAT) series of phantoms was developed to provide accurate computerized models of the human anatomy and…”
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Design of a digital phantom population for myocardial perfusion SPECT imaging research by Ghaly, Michael, Du, Yong, Fung, George S K, Tsui, Benjamin M W, Links, Jonathan M, Frey, Eric

“…Digital phantoms and Monte Carlo (MC) simulations have become important tools for optimizing and evaluating instrumentation, acquisition and processing methods…”
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Joint estimation of tissue types and linear attenuation coefficients for photon counting CT by Nakada, Kento, Taguchi, Katsuyuki, Fung, George S. K., Amaya, Kenji

“…Purpose: Newly developed spectral computed tomography (CT) such as photon counting detector CT enables more accurate tissue‐type identification through…”
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Motion estimation for cardiac functional analysis using two x‐ray computed tomography scans by Fung, George S. K., Ciuffo, Luisa, Ashikaga, Hiroshi, Taguchi, Katsuyuki

“…Purpose This work concerns computed tomography (CT)‐based cardiac functional analysis (CFA) with a reduced radiation dose. As CT‐CFA requires images over the…”
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Validation of a convolutional neural network algorithm for calcium score quantification using a multivendor dataset by Muscogiuri, Emanuele, van Assen, Marly, Tessarin, Giovanni, Razavi, Alexander, Schwemmer, Chris, Schoebinger, Max, Wels, Michael, Rapaka, Saikiran, Fung, George S.K., Stillman, Arthur E., De Cecco, Carlo N.

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Development of a Customizable Hepatic Arterial Tree and Particle Transport Model for Use in Treatment Planning by Crookston, Nathan R., Fung, George S. K., Frey, Eric C.

“…Optimal treatment planning for radioembolization of hepatic cancers produces sufficient dose to tumors for control and dose to normal liver parenchyma that is…”
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Task-based image quality evaluation of iterative reconstruction methods for low dose CT using computer simulations by Xu, Jingyan, Fuld, Matthew K, Fung, George S K, Tsui, Benjamin M W

“…Iterative reconstruction (IR) methods for x-ray CT is a promising approach to improve image quality or reduce radiation dose to patients. The goal of this work…”
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Evaluating the Performance of a Convolutional Neural Network Algorithm for Measuring Thoracic Aortic Diameters in a Heterogeneous Population by Monti, Caterina B, van Assen, Marly, Stillman, Arthur E, Lee, Scott J, Hoelzer, Philipp, Fung, George S K, Secchi, Francesco, Sardanelli, Francesco, De Cecco, Carlo N

“…The purpose of this work was to assess the performance of a convolutional neural network (CNN) for automatic thoracic aortic measurements in a heterogeneous…”
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Realistic analytical polyhedral MRI phantoms by Ngo, Tri M., Fung, George S. K., Han, Shuo, Chen, Min, Prince, Jerry L., Tsui, Benjamin M. W., McVeigh, Elliot R., Herzka, Daniel A.

“…Purpose Analytical phantoms have closed form Fourier transform expressions and are used to simulate MRI acquisitions. Existing three‐dimensional (3D)…”
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