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Contact Info

Stephen A. McAleavey, Ph.D Department of Biomedical Engineering University of Rochester work Box 270168 Rochester, NY 14627-0168 office: Goergen Hall 309 p 585-275-7768 f 585-276-1999 McAleavey

Recent Publications

  • (2014 May). Analysis and measurement of the modulation transfer function of harmonic shear wave induced phase encoding imaging. - The Journal of the Acoustical Society of America.
  • (2013 Jun 10). Design and validation of two optical beacons for guidewire localization in breast-conserving surgery. - Applied optics.
  • (2013 Apr). Single tracking location methods suppress speckle noise in shear wave velocity estimation. - Ultrasonic imaging.
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Graduate Students

  • Photo of Etana Elegbe

    Etana Elegbe

    Spatially Modulated Ultrasound Radiation Force as a novel tool for tissue imaging and characterization.

  • Photo of Jonathan Langdon

    Jonathan Langdon

    Medical imaging research

Stephen A. McAleavey

  • Ph.D., University of Rochester, 2001
Photo of Stephen McAleavey
  • Associate Professor

    • Biomedical Engineering
    • Electrical & Computer Engineering
    • Rochester Center for Biomedical Ultrasound

McAleavey Lab

Research Overview

The development of novel, clinically applicable ultrasound imaging techniques is the primary goal of our laboratory's research. We are particularly interested in the use of motion-tracking techniques to enhance the contrast of ultrasound images. Motion of tissues, both physiological and artificial, can reveal the differences in tissue stiffness and type, as well as the presence of implanted devices. Furthermore, detection and tracking of tissue motion can guide the delivery of therapeutic agents. The interaction of ultrasound with tissue, statistical properties of ultrasound echoes and signal processing techniques are the topics we study in order to achieve these goals.

Acoustic Radiation Force Impulse (ARFI) imaging is one technique we are investigating. ARFI imaging uses short (<0.1ms) bursts of ultrasound to induce small but measurable (2-20 microns) displacements in tissue. The response of the tissue to this impulsive excitation is determined by material properties. By measuring this response we produce images with contrast not present in ordinary ultrasound images (B-scans).

Magnetically induced vibration of brachytherapy seeds, combined with ultrasonic motion tracking, allows us to produce high contrast images of brachytherapy seeds embedded in tissue. Brachytherapy seeds are ordinarily difficult to image with ultrasound, and their accurate placement is necessary for effective therapy. Our magnetically induced motion imaging (MIMI) technique could serve as an enabling technology for real-time treatment planning of prostate brachytherapy.