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Robert Waag

TitleProfessor
InstitutionUniversity of Rochester, River Campus
DepartmentElectrical & Computer Engineering
AddressUniversity of Rochester Medical Center
School of Medicine and Dentistry
601 Elmwood Ave, Box 648
Rochester NY 14642
Other Positions
TitleProfessor
InstitutionSchool of Medicine and Dentistry
DepartmentImaging Sciences

 
 Selected Publications
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  1. Jiang W, Astheimer J, Waag R. Aberration compensation of an ultrasound imaging instrument with a reduced number of channels. IEEE Trans Ultrason Ferroelectr Freq Control. 2012 Oct; 59(10):2210-25.
    View in: PubMed
  2. Jiang W, Astheimer J, Waag R. A singular-value method for reconstruction of nonradial and lossy objects. IEEE Trans Ultrason Ferroelectr Freq Control. 2012 Mar; 59(3):590-604.
    View in: PubMed
  3. Jin J, Astheimer J, Waag R. Estimation of scattering object characteristics for image reconstruction using a nonzero background. IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Jun; 57(6):1248-62.
    View in: PubMed
  4. Hesford AJ, Astheimer JP, Waag RC. Acoustic scattering by arbitrary distributions of disjoint, homogeneous cylinders or spheres. J Acoust Soc Am. 2010 May; 127(5):2883-93.
    View in: PubMed
  5. Salahura G, Tillett JC, Metlay LA, Waag RC. Large-scale propagation of ultrasound in a 3-D breast model based on high-resolution MRI data. IEEE Trans Biomed Eng. 2010 Jun; 57(6):1273-84.
    View in: PubMed
  6. Hesford AJ, Astheimer JP, Greengard LF, Waag RC. A mesh-free approach to acoustic scattering from multiple spheres nested inside a large sphere by using diagonal translation operators. J Acoust Soc Am. 2010 Feb; 127(2):850-61.
    View in: PubMed
  7. Tillett JC, Astheimer JP, Waag RC. A model of distributed phase aberration for deblurring phase estimated from scattering. IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Jan; 57(1):214-28.
    View in: PubMed
  8. Tillett JC, Daoud MI, Lacefield JC, Waag RC. A k-space method for acoustic propagation using coupled first-order equations in three dimensions. J Acoust Soc Am. 2009 Sep; 126(3):1231-44.
    View in: PubMed
  9. Duncan DP, Astheimer JP, Waag RC. Scattering calculation and image reconstruction using elevation-focused beams. J Acoust Soc Am. 2009 May; 125(5):3101-19.
    View in: PubMed
  10. Astheimer JP, Waag RC. Born iterative reconstruction using perturbed-phase field estimates. J Acoust Soc Am. 2008 Oct; 124(4):2353-63.
    View in: PubMed
  11. Waag RC, Lin F, Varslot TK, Astheimer JP. An eigenfunction method for reconstruction of large-scale and high-contrast objects. IEEE Trans Ultrason Ferroelectr Freq Control. 2007 Jul; 54(7):1316-32.
    View in: PubMed
  12. Waag RC, Fedewa RJ. A ring transducer system for medical ultrasound research. IEEE Trans Ultrason Ferroelectr Freq Control. 2006 Oct; 53(10):1707-18.
    View in: PubMed
  13. Astheimer JP, Pilkington WC, Waag RC. Reduction of variance in spectral estimates for correction of ultrasonic aberration. IEEE Trans Ultrason Ferroelectr Freq Control. 2006 Jan; 53(1):79-89.
    View in: PubMed
  14. Waag RC, Astheimer JP. Statistical estimation of ultrasonic propagation path parameters for aberration correction. IEEE Trans Ultrason Ferroelectr Freq Control. 2005 May; 52(5):851-69.
    View in: PubMed
  15. Lacefield JC, Pilkington WC, Waag RC. Comparisons of lesion detectability in ultrasound images acquired using time-shift compensation and spatial compounding. IEEE Trans Ultrason Ferroelectr Freq Control. 2004 Dec; 51(12):1649-59.
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  16. Varslot T, Angelsen B, Waag RC. Spectral estimation for characterization of acoustic aberration. J Acoust Soc Am. 2004 Jul; 116(1):97-108.
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  17. Tabei M, Mast TD, Waag RC. Simulation of ultrasonic focus aberration and correction through human tissue. J Acoust Soc Am. 2003 Feb; 113(2):1166-76.
    View in: PubMed
  18. Lacefield JC, Waag RC. Spatial coherence analysis applied to aberration correction using a two-dimensional array system. J Acoust Soc Am. 2002 Dec; 112(6):2558-66.
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  19. Lacefield JC, Waag RC. Examples of design curves for multirow arrays used with time-shift compensation. IEEE Trans Ultrason Ferroelectr Freq Control. 2002 Sep; 49(9):1340-4.
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  20. Lin F, Waag RC. Estimation and compensation of ultrasonic wavefront distortion using a blind system identification method. IEEE Trans Ultrason Ferroelectr Freq Control. 2002 Jun; 49(6):739-55.
    View in: PubMed
  21. Tabei M, Mast TD, Waag RC. A k-space method for coupled first-order acoustic propagation equations. J Acoust Soc Am. 2002 Jan; 111(1 Pt 1):53-63.
    View in: PubMed
  22. Lacefield JC, Waag RC. Time-shift estimation and focusing through distributed aberration using multirow arrays. IEEE Trans Ultrason Ferroelectr Freq Control. 2001 Nov; 48(6):1606-24.
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  23. Mast TD, Souriau LP, Liu DL, Tabei M, Nachman AI, Waag RC. A k-space method for large-scale models of wave propagation in tissue. IEEE Trans Ultrason Ferroelectr Freq Control. 2001 Mar; 48(2):341-54.
    View in: PubMed
  24. Mast TD, Hinkelman LM, Metlay LA, Orr MJ, Waag RC. Simulation of ultrasonic pulse propagation, distortion, and attenuation in the human chest wall. J Acoust Soc Am. 1999 Dec; 106(6):3665-77.
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  25. Mast TD, Hinkelman LM, Orr MJ, Waag RC. The effect of abdominal wall morphology on ultrasonic pulse distortion. Part II. Simulations. J Acoust Soc Am. 1998 Dec; 104(6):3651-64.
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  26. Hinkelman LM, Mast TD, Metlay LA, Waag RC. The effect of abdominal wall morphology on ultrasonic pulse distortion. Part I. Measurements. J Acoust Soc Am. 1998 Dec; 104(6):3635-49.
    View in: PubMed
  27. Jansson TT, Mast TD, Waag RC. Measurements of differential scattering cross section using a ring transducer. J Acoust Soc Am. 1998 Jun; 103(6):3169-79.
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  28. Liu DD, Waag RC. Estimation and correction of ultrasonic wavefront distortion using pulse-echo data received in a two-dimensional aperture. IEEE Trans Ultrason Ferroelectr Freq Control. 1998; 45(2):473-90.
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  29. Mast TD, Nachman AI, Waag RC. Focusing and imaging using eigenfunctions of the scattering operator. J Acoust Soc Am. 1997 Aug; 102(2 Pt 1):715-25.
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  30. Mast TD, Hinkelman LM, Orr MJ, Sparrow VW, Waag RC. Simulation of ultrasonic pulse propagation through the abdominal wall. J Acoust Soc Am. 1997 Aug; 102(2 Pt 1):1177-90.
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  31. Hinkelman LM, Szabo TL, Waag RC. Measurements of ultrasonic pulse distortion produced by human chest wall. J Acoust Soc Am. 1997 Apr; 101(4):2365-73.
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  32. Liu DL, Waag RC. Harmonic amplitude distribution in a wideband ultrasonic wavefront after propagation through human abdominal wall and breast specimens. J Acoust Soc Am. 1997 Feb; 101(2):1172-83.
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  33. Liu DL, Waag RC. Propagation and backpropagation for ultrasonic wavefront design. IEEE Trans Ultrason Ferroelectr Freq Control. 1997; 44(1):1-13.
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  34. Mast TD, Waag RC. Wave space resolution in ultrasonic scattering measurements. J Acoust Soc Am. 1995 Dec; 98(6):3050-8.
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  35. Hinkelman LM, Liu DL, Waag RC, Zhu Q, Steinberg BD. Measurement and correction of ultrasonic pulse distortion produced by the human breast. J Acoust Soc Am. 1995 Mar; 97(3):1958-69.
    View in: PubMed
  36. Liu DL, Waag RC. Correction of ultrasonic wavefront distortion using backpropagation and a reference waveform method for time-shift compensation. J Acoust Soc Am. 1994 Aug; 96(2 Pt 1):649-60.
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  37. Liu DL, Waag RC. Time-shift compensation of ultrasonic pulse focus degradation using least-mean-square error estimates of arrival time. J Acoust Soc Am. 1994 Jan; 95(1):542-55.
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  38. Hinkelman LM, Liu DL, Metlay LA, Waag RC. Measurements of ultrasonic pulse arrival time and energy level variations produced by propagation through abdominal wall. J Acoust Soc Am. 1994 Jan; 95(1):530-41.
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  39. Waag RC, Astheimer JP, Smith JF. Analysis and computations of measurement system effects in ultrasonic scattering experiments. J Acoust Soc Am. 1992 Mar; 91(3):1284-97.
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  40. Sumino Y, Waag RC. Measurements of ultrasonic pulse arrival time differences produced by abdominal wall specimens. J Acoust Soc Am. 1991 Dec; 90(6):2924-30.
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  41. Waag RC, Demczar BA, Case TJ. Nonlinear receiver compression effects on the amplitude distribution of backscattered ultrasonic signals. IEEE Trans Biomed Eng. 1991 Jul; 38(7):628-33.
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  42. Quain RM, Waag RC, Miller MW. The use of frequency mixing to distinguish size distributions of gas-filled micropores. Ultrasound Med Biol. 1991; 17(1):71-9.
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  43. Waag RC, Astheimer JP. Characterization of measurement system effects in ultrasonic scattering experiments. J Acoust Soc Am. 1990 Nov; 88(5):2418-36.
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  44. Holen J, Nanna M, Lockhart J, Waag R. Doppler color flow in echocardiography: analytical and in-vitro investigations of the quantitative relationship between orifice flow and color jet dimensions. Ultrasound Med Biol. 1990; 16(6):543-51.
    View in: PubMed
  45. Richeson JF, Waag RC, Zwierzynski D, Schenk EA. Sequential topographical portrayal of myocardial blood flow. Am J Physiol. 1989 Aug; 257(2 Pt 2):H635-42.
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  46. Waag RC, Dalecki D, Smith WA. Estimates of wave front distortion from measurements of scattering by model random media and calf liver. J Acoust Soc Am. 1989 Jan; 85(1):406-15.
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  47. Waag RC, Dalecki D, Christopher PE. Spectral power determinations of compressibility and density variations in model media and calf liver using ultrasound. J Acoust Soc Am. 1989 Jan; 85(1):423-31.
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  48. Parker KJ, Lerner RM, Waag RC. Comparison of techniques for in vivo attenuation measurements. IEEE Trans Biomed Eng. 1988 Dec; 35(12):1064-8.
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  49. Peters KJ, Waag RC. Compensation for receiver bandpass effects on ultrasonic backscatter power spectra using a random medium reference. J Acoust Soc Am. 1988 Jul; 84(1):392-9.
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  50. Gracewski SM, Waag RC, Schenk EA. High-frequency attenuation measurements using an acoustic microscope. J Acoust Soc Am. 1988 Jun; 83(6):2405-9.
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  51. Sinai J, Waag RC. Ultrasonic scattering by two concentric cylinders. J Acoust Soc Am. 1988 May; 83(5):1728-35.
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  52. Witten A, Tuggle J, Waag RC. A practical approach to ultrasonic imaging using diffraction tomography. J Acoust Soc Am. 1988 Apr; 83(4):1645-52.
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  53. Moshfeghi M, Waag RC. In vivo and in vitro ultrasound beam distortion measurements of a large aperture and a conventional aperture focussed transducer. Ultrasound Med Biol. 1988; 14(5):415-28.
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  54. Lerner RM, Waag RC. Wave space interpretation of scattered ultrasound. Ultrasound Med Biol. 1988; 14(2):97-102.
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  55. Parker KJ, Asztely MS, Lerner RM, Schenk EA, Waag RC. In-vivo measurements of ultrasound attenuation in normal or diseased liver. Ultrasound Med Biol. 1988; 14(2):127-36.
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  56. Holen J, Waag RC, Gramiak R. Doppler ultrasound in aortic stenosis: in vitro studies of pressure gradient determination. Ultrasound Med Biol. 1987 Jun; 13(6):321-8.
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  57. Walach E, Liu CN, Waag RC, Parker KJ. Quantitative tissue characterization based on pulsed-echo ultrasound scans. IEEE Trans Biomed Eng. 1986 Jul; 33(7):637-43.
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  58. Holen J, Waag RC, Gramiak R. Representations of rapidly oscillating structures on the Doppler display. Ultrasound Med Biol. 1985 Mar-Apr; 11(2):267-72.
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  59. Holen J, Waag RC, Gramiak R, Violante MR, Roe SA. Doppler ultrasound in orifice flow. In vitro studies of the relationship between pressure difference and fluid velocity. Ultrasound Med Biol. 1985 Mar-Apr; 11(2):261-6.
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  60. Parker KJ, Lerner RM, Waag RC. Attenuation of ultrasound: magnitude and frequency dependence for tissue characterization. Radiology. 1984 Dec; 153(3):785-8.
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  61. Waag RC. A review of tissue characterization from ultrasonic scattering. IEEE Trans Biomed Eng. 1984 Dec; 31(12):884-93.
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  62. Campbell JA, Waag RC. Ultrasonic scattering properties of three random media with implications for tissue characterization. J Acoust Soc Am. 1984 Jun; 75(6):1879-86.
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  63. Parker KJ, Waag RC. Measurement of ultrasonic attenuation within regions selected from B-scan images. IEEE Trans Biomed Eng. 1983 Aug; 30(8):431-7.
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  64. Campbell JA, Waag RC. Normalization of ultrasonic scattering measurements to obtain average differential scattering cross sections for tissues. J Acoust Soc Am. 1983 Aug; 74(2):393-9.
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  65. Liu CN, Fatemi M, Waag RC. Digital processing for improvement of ultrasonic abdominal images. IEEE Trans Med Imaging. 1983; 2(2):66-75.
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  66. Waag RC, Schenk EA, Nilsson JO, Richeson JF. Topographic display and quantitative analysis of blood flow marker distribution in normal and infarcted hearts. IEEE Trans Biomed Eng. 1982 Oct; 29(10):694-700.
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  67. Waag RC, Lee PP, Persson HW, Schenk EA, Gramiak R. Frequency-dependent angle scattering of ultrasound by liver. J Acoust Soc Am. 1982 Aug; 72(2):343-52.
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  68. Gramiak R, Waag RC, Schenk EA, Lee PP, Thomson K, Macintosh P. Ultrasonic detection of myocardial infarction by amplitude analysis. Radiology. 1979 Mar; 130(3):713-20.
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  69. Gramiak R, Waag RC. Cardiac reconstruction imaging in relation to other ultrasound systems and computed tomography. AJR Am J Roentgenol. 1976 Jul; 127(1):91-9.
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  70. Waag RC, Gramiak R. Methods for ultrasonic imaging of the heart. Ultrasound Med Biol. 1976 Jun; 2(3):163-70.
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  71. Gramiak R, Waag RC, Simon W. Ciné ultrasound cardiography. Radiology. 1973 Apr; 107(1):175-80.
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Waag's Networks

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