Peruvian Scientists Quien es: Dwight Roberto Acosta Najarro


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201 Conant Rd. Apt. C, Rochester, NY

RESEARCH INTERESTS: 3D medical image understanding; Automatic and semi-automatic image segmentation; Image registration; Pattern recognition; Ultrasound; Elasticity.



University of Rochester                                                                                                                             Rochester, NY

Ph.D. in Electrical & Computer Engineering, advisor: Kevin J. Parker, expected February 2009
M.S. in Electrical & Computer Engineering (GPA: 4.00), March 2006

Rochester Institute of Technology (RIT)                                                                                          Rochester, NY

M.S. in Computer Engineering (GPA: 4.00), June 2004

Pontificia Universidad Católica del Perú (PUCP)                                                                         Lima, Perú

Engineering License with outstanding mention, October 2001
B.S. in Electronics (Electrical) Engineering, ranked 2 out of 60, August 2000


University of Rochester                                                                                                             Rochester, NY (2004-Present)

Research Assistant, 3D sonoelastography imaging for prostate cancer NIH Grant

Pontificia Universidad Católica del Perú                                                                         Lima, Peru (2006-Present)

Adjunct Faculty, Director of the Research Group of Medical Imaging

Rochester Institute of Technology                                                                                       Rochester, NY (2002-2004)

Research Assistant, Active Vision Laboratory, Computer Engineering Department
Synopsis S.A., IBM Business Partner                                                                                  Lima, Peru (2001-2002)
Instructor and Senior Programmer
Procter & Gamble                                                                                                                          Lima, Peru (2000)
Internship in the Customer Relationship Area
IBM                                                                                                                                                       Lima, Peru (1999-2000)
Internship in the Software Area


  • Castaneda B., Zhang M., Tamez-Pena G., Hoyt K., Bylund K., Christensen J., Saad W., Strang J., Rubens D. J., Parker K. J., “Semi-automatic measurement of thermally ablated hepatic lesions in in vivo sonoelastographic images,” in preparation.
  • Zhang M., Castaneda B., Christensen J., Saad W., Bylund K., Hoyt K., Strang J.G., Rubens D.J., Parker K.J., “Real-time sonoelastography of hepatic thermal lesions in a swine model,” Medical Physics, accepted.
  • Zhang M., Nigwekar P., Castaneda B., Hoyt K., Joseph J.V., di Sant’agnese A., Messing E.M., Strang J.G., Rubens D.J., Parker K.J., “Quantitative characterization of viscoelastic properties of human prostate correlated with histology,” Journal of Ultrasound in Medicine and Biology, in press.
  • Hoyt K., Castaneda B., Parker K.J., “Two dimensional sonoelastographic shear velocity imaging”, Journal of Ultrasound in Medicine and Biology, 2008; 34(2):276-288.
  • Castaneda B., Tamez-Pena G., Zhang M., Hoyt K., Bylund K., Christensen J., Saad W., Strang J., Rubens D. J., Parker K. J., “Measurement of thermally-ablated lesions in sonoelastographic images using level set methods,”  Proceedings of SPIE, v. 6920, Medical Imaging 2008: Ultrasonic Imaging and Signal Processing, pp. 692018-1 – 692018-8.
  • Zhang M., Castaneda B., Wu Z., Nigwekar P., Joseph J., Rubens D.J., Parker K.J., “Congruence of imaging estimator and mechanical measurements of viscoelastic properties of soft tissues,” Journal of Ultrasound in Medicine and Biology, 2007; 33(10):1617-31.
  • Castaneda B., Hoyt K., Zhang M., Pasternack D., Baxter L., Nigwekar P., di Sant'Agnese A., Joseph J., Strang J., Rubens D. J., Parker K. J., “Prostate cancer detection based on three dimensional sonoelastography,” Proceedings of the 2007 IEEE Ultrasonics Symposium, pp. 1353 – 1356.
  • Castaneda B., Zhang M., Bylund K., Christensen J., Saad W., Rubens D.J., Parker K.J., “Semi-automatic measurement of thermal ablated lesions in sonoelastography images,” Journal of Ultrasound in Medicine, 2007; 26:S87-S88.


    • Reviewer of IEEE Latin America Transactions (2008 – Present)
    • Intramural funds to develop image processing tools to diagnose tropical diseases, PUCP, Peru (2008)
    • Honorable Mention Poster Award, SPIE Medical Imaging (2008)
    • Finalist of the Mondialogo Engineering Award, UNESCO and Daimler (2007)
    • Winner of the Predictive Model Contest, Humana Inc. (2007)
    • Finalist in the New Investigator Award Competition, American Institute of Ultrasound in Medicine (2007)
    • Charles Merriam Teaching Assistant Prize, ECE – University of Rochester (2004-2005)
    • Good Samaritan International Scholarship for outstanding academic performance, RIT (2003)
    • Best Instructor of the year, Synopsis Educational Services, Peru (2001)
    • American Airlines Leadership Fellow (Leadership for the Americas Program), Peru (2000)
    • Procter & Gamble’s Award to Success, Peru (1999)



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