Search Results - "Fedewa, R.J."

A Ring Transducer System for Medical by Waag, R.C., Fedewa, R.J.

“…An ultrasonic ring transducer system has been developed for experimental studies of scattering and imaging. The transducer consists of 2048 rectangular…”
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Spatial coherence of the nonlinearly generated second harmonic portion of backscatter for a clinical imaging system by Fedewa, R.J., Wallace, K.D., Holland, M.R., Jago, J.R., Ng, G.C., Rielly, M.R., Robinson, B.S., Miller, J.G.

“…Correlation-based approaches to phase aberration correction rely on the spatial coherence of backscattered signals. The spatial coherence of backscatter from…”
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Spatial coherence of backscatter for the nonlinearly produced second harmonic for specific transmit apodizations by Fedewa, R.J., Wallace, K.D., Holland, M.R., Jago, J.R., Ng, G.C., Rielly, M.R., Robinson, B.S., Miller, J.G.

“…To be successful, correlation-based, phase-aberration correction requires a high correlation among backscattered signals. For harmonic imaging, the spatial…”
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Spatial coherence of backscatter for the nonlinearly produced second harmonic for speci .c transmit apodizations by Fedewa, R.J., Wallace, K.D., Holland, M.R., Jago, J.R., Ng, G.C., Rielly, M.R., Robinson, B.S., Miller, J.G.

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Impact of propagation through an aberrating medium on the linear effective apodization of a nonlinearly generated second harmonic field by Wallace, Kirk D., Holland, Mark R., Robinson, Brent S., Fedewa, Russell J., Lloyd, Christopher W., Miller, James G.

“…Techniques based on the nonlinearly generated second harmonic signal (tissue harmonic imaging) have rapidly supplanted linear (fundamental) imaging methods as…”
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1H-2 Prediction of Success for HIFU Treatments of Prostate Cancer Based on Acoustic Energy Density by Fedewa, R.J., Carlson, R.F., Seip, R., Sanghvi, N.T., Koch, M.O., Gardner, T.A.

“…A novel method [Fedewa, et. al., 2005] to predict the probability of success of prostate cancer treatments with HIFU immediately after treatment was developed…”
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Automated treatment planning for prostate cancer HIFU therapy by Fedewa, R.J., Seip, R., Carlson, R.F., Wohsing Chen, Sanghvi, N.T., Penna, M.A., Dines, K.A., Pfile, R.E.

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Measurements comparing the linearly propagated field using an effective apodization and the nonlinearly generated second harmonic field by Wallace, K.D., Fedewa, R.J., Holland, M.R., Ng, G.C., Robinson, B.S., Jago, J.R., Rielly, M., Miller, J.G.

“…We have previously introduced the concept of an "effective apodization" as a linear description of the nonlinearly generated harmonic components of a finite…”
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Effect of changing the transmit aperture on the spatial coherence of backscatter for the nonlinearly generated second harmonic by Fedewa, R.J., Wallace, K.D., Holland, M.R., Jago, J.R., Ng, G.C., Rielly, M.R., Robinson, B.S., Miller, J.G.

“…The present work measures the effective apodizations for the fundamental and second harmonic and uses the Van Cittert-Zernike theorem to predict the spatial…”
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Statistically significant differences in the spatial coherence of backscatter for fundamental and harmonic portions of a clinical beam by Fedewa, R.J., Wallace, K.D., Holland, M.R., Jago, J.R., Ng, G.C., Rielly, M.R., Robinson, B.S., Miller, J.G.

“…Correlation-based approaches to phase aberration correction rely on the spatial coherence of backscattered signals. The spatial coherence of backscatter was…”
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Backscatter imaging and myocardial tissue characterization by Miller, J.G., Perez, J.E., Wickline, S.A., Baldwin, S.L., Barzilai, B., Davila-Roman, V., Fedewa, R.J., Finch-Johnston, A.E., Hall, C.S., Handley, S.M., Hockett, F.D., Holland, M.R., Kovacs, A., Lanza, G.M., Lewis, S.H., Marsh, J.N., Mobley, J., Sosnovik, D.E., Trousil, R.L., Wallace, K.D., Waters, K.R.

“…The goal of myocardial ultrasonic tissue characterization is to complement two-dimensional and Doppler echocardiography by providing information (such as…”
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