Search Results - "Sumanaweera, T."

Comparison and evaluation of retrospective intermodality brain image registration techniques by WEST, J, FITZPATRICK, J. M, MAES, F, SUETENS, P, VANDERMEULEN, D, VAN DEN ELSEN, P. A, NAPEL, S, SUMANAWEERA, T. S, HARKNESS, B, HEMLER, P. F, HILL, D. L. G, HAWKES, D. J, WANG, M. Y, STUDHOLME, C, MAINTZ, J. B. A, VIERGEVER, M. A, MALANDAIN, G, PENNEC, X, NOZ, M. E, MAGUIRE, G. Q, POLLACK, M, PELIZZARI, C. A, ROBB, R. A, DAWANT, B. M, HANSON, D, WOODS, R. P, MAURER, C. R, KESSLER, R. M, MACIUNAS, R. J, BARILLOT, C, LEMOINE, D, COLLIGNON, A

“…The primary objective of this study is to perform a blinded evaluation of a group of retrospective image registration techniques using as a gold standard a…”
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SU‐FF‐T‐559: Effect of Cardiac Motion On the Cyberknife Synchrony Tracking System for Radiosurgical Cardiac Ablation by Teo, BK, Dieterich, S, Blanck, O, Sumanaweera, T, Gardner, E

“…Purpose: To characterize the effect of cardiac motion on the CyberKnife Synchrony respiratory tracking system for radiosurgical cardiac ablation. Method and…”
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MR susceptibility misregistration correction by Sumanaweera, T.S., Glover, G.H., Binford, T.O., Adler, J.R.

“…The authors present a new in vivo method to correct the nonlinear, object-shape-dependent and material-dependent spatial distortion in magnetic resonance (MR)…”
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Quantitative 3-D diagnostic ultrasound imaging using a modified transducer array and an automated image tracking technique by Hossack, J.A., Sumanaweera, T.S., Napel, S., Ha, J.S.

“…An approach for acquiring dimensionally accurate three-dimensional (3-D) ultrasound data from multiple 2-D image planes is presented. This is based on the use…”
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MR geometric distortion correction for improved frame-based stereotaxic target localization accuracy by Sumanaweera, T S, Glover, G H, Hemler, P F, van den Elsen, P A, Martin, D, Adler, J R, Napel, S

“…We present a method to correct the geometric distortion caused by field inhomogeneity in MR images of patients wearing MR-compatible stereotaxic frames. Our…”
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A new frame-based registration algorithm by Yan, C. H., Whalen, R. T., Beaupre, G. S., Sumanaweera, T. S., Yen, S. Y., Napel, S.

“…This paper presents a new algorithm for frame registration. Our algorithm requires only that the frame be comprised of straight rods, as opposed to the N…”
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Registration error quantification of a surface-based multimodality image fusion system by Hemler, P F, Napel, S, Sumanaweera, T S, Pichumani, R, van den Elsen, P A, Martin, D, Drace, J, Adler, J R, Perkash, I

“…This paper presents a new reference data set and associated quantification methodology to assess the accuracy of registration of computerized tomography (CT)…”
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Tissue ablation using an acoustic waveguide for high-intensity focused ultrasound by Sommer, F. Graham, Sumanaweera, Thilaka S., Glover, Gary

“…High-intensity focused ultrasound (HIFU) has been shown capable of selective tissue destruction in humans, with promise as a tool for ablation of tumors,…”
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A system for multimodality image fusion by Hemler, P.F., Sumanaweera, T., van den Elsen, P.A., Napel, S., Adler, J.

“…This paper describes a semi-automatic system for registering and visualizing CT (computer tomography) and MR (magnetic resonance) images. This system has been…”
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Dynamic color Doppler extended field of view imaging by Bakircioglu, M., Sumanaweera, T., Bradley, C., Linyong Pang, Hossack, J.

“…A new method for generating dynamic color Doppler extended field of view (EFOV) images is presented. The method derives an ECG waveform from the spatial…”
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Quantifying MRI geometric distortion in tissue by Sumanaweera, T, Glover, G, Song, S, Adler, J, Napel, S

“…We present a method to quantify the MR field inhomogeneity geometric distortion to subpixel accuracy without using objects of known dimensions and without…”
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Characterization of spatial distortion in magnetic resonance imaging and its implications for stereotactic surgery by Sumanaweera, T S, Adler, Jr, J R, Napel, S, Glover, G H

“…The different sources of spatial distortion in magnetic resonance images are reviewed from the point of view of stereotactic target localization. The extents…”
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Carotid disease: automated analysis with cardiac-gated three-dimensional US technique and preliminary results by Napel, Sandy, Xu, Haobo, Paik, David S, Ross, Barbra A, Sumanaweera, Thilaka S, Hossack, John A, Jeffrey, Jr, R Brooke

“…Automatic analysis was performed of four-dimensional ultrasonographic (US) data in the carotid artery. The data, which were acquired in 31 subjects (eight…”
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Method for correcting magnetic resonance image distortion for frame-based stereotactic surgery, with preliminary results by Sumanaweera, T S, Adler, J R, Glover, G H, Hemler, P F, van den Elsen, P A, Martin, D, Napel, S

“…We previously described a technique for correcting patient-specific magnetic field inhomogeneity spatial distortion in magnetic resonance images (MRI), which…”
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A versatile system for multimodality image fusion by Hemler, P F, Sumanaweera, T S, van den Elsen, P A, Napel, S, Adler, J

“…This paper presents a versatile system for registering and visualizing computed tomography and magnetic resonance images. The system utilizes a semi-automatic,…”
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Cardiac image fusion by Sumanaweera, T.S., Conwell, B.

“…We present a method to enhance the image quality and the field of view of echocardiography by combining the data acquired through multiple windows to the heart…”
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A spiral 2D phased array for 3D imaging by Sumanaweera, T.S., Schwartz, J., Napolitano, D.

“…Presents simulation results suggesting that 2D arrays constructed by arranging N elements in an exponential spiral, while achieving comparable beam widths,…”
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Removing local motion from ultrasonic images using nonaffine registration for contrast quantification by Gardner, E.A., Sumanaweera, T.S., Woelmer, M.N., Steins, R.W., Leen, E.

“…A contrast quantification package has been developed to be part of a medical ultrasound system. This package provides motion compensation through nonaffine…”
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Quantitative 3D ultrasound imaging using an automated image tracking technique by Hossack, J., Sumanaweera, T.S., Napel, S.

“…A new method for acquiring dimensionally accurate 3D ultrasound data from multiple 2D image planes is proposed and tested. This is based on the use of a…”
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Freehand spatial compounding [ultrasonic imaging] by Sumanaweera, T.S., Bradley, C., Linyong Pang, Hossack, J., Allison, J.

“…A new retrospective method of spatial compounding is presented. Volunteer scans showed improved contrast to noise ratio, speckle noise variance suppression and…”
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