The Michigan Engineer News Center

Yong Long selected as Barbour Scholar

The Barbour Scholarship, established in 1914, recognizes women at the University of Michigan of the highest academic and professional caliber.| Short Read
EnlargeYong Long with Prof. Jeff Fessler
IMAGE:  Yong Long with Prof. Jeff Fessler

Yong Long, PhD student in the Electrical Engineering: Systems program, has been selected as a Barbour Scholar for the 2010-11 academic year. She is working with Professor Jeffrey Fessler in EECS-ECE Division, as well as Prof. James M. Balter in the Medical School, Department of Radiation Oncology,

Long conducts research in statistical image reconstruction for X-ray CT, medical image registration and their applications to radiotherapy. She describes her research in improving the quality of CT image and radiotherapy:

“3D statistical image reconstruction methods have the potential to significantly improve image quality and reduce patient X-ray dose in medical computed tomography (CT) scans. The primary drawback of statistical methods compared to conventional image reconstruction methods is the increased computation time. We have developed a new algorithm for performing the most computationally expensive portion of statistical methods in a way that requires less computation than traditional methods yet provides improved image quality.

Estimating motion of tumors from a series of projection radiographs acquired during arc therapy using a reference CT volume has become a promising technique for targeting treatment. We have investigated the influence of rotational arc length on accuracy limits of projection-to-volume registration. These information limits will impact not only the complexity and operational parameters of positioning or tracking methodologies, but more importantly may indicate optimal design of radiographic localization technology integrated with linear accelerators.”

About the Award

The Rackham Barbour Scholarship was established in 1914 by Levi L. Barbour to recognize women at the University of Michigan of the highest academic and professional caliber from the area formerly known as the Orient to study modern science, medicine, mathematics and other academic disciplines and professions critical to the development of their native lands.

Yong Long with Prof. Jeff Fessler
Portrait of Catharine June


Catharine June
ECE Communications and Marketing Manager

Electrical Engineering and Computer Science

(734) 936-2965

3301 EECS

The electrons absorb laser light and set up “momentum combs” (the hills) spanning the energy valleys within the material (the red line). When the electrons have an energy allowed by the quantum mechanical structure of the material—and also touch the edge of the valley—they emit light. This is why some teeth of the combs are bright and some are dark. By measuring the emitted light and precisely locating its source, the research mapped out the energy valleys in a 2D crystal of tungsten diselenide. Credit: Markus Borsch, Quantum Science Theory Lab, University of Michigan.

Mapping quantum structures with light to unlock their capabilities

Rather than installing new “2D” semiconductors in devices to see what they can do, this new method puts them through their paces with lasers and light detectors. | Medium Read