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Dec 2006

Awards and Honors

This month's Memo from the Dean [ext. link] by Dr. Kristina Johnson, Dean of the Pratt School of Engineering, highlighted current DAILabs student Amar Chawla and DAILAbs alumni Dr. Mia Markey. Mr. Chawla is a BME Ph.D. student (advised by Dr. Samei) whose team won the Duke Start-Up Challenge "most intriguing award in the Hi-Tech/IT/Software category" for his proposal of a stereo/biplane correlation imaging approach for homeland security applications. Dr. Markey received her Ph.D. in BME in 2002 (advised by Dr. Lo) and is now an assistant professor at the University of Texas in Austin. She received the 2006 American Medical Infomatics Association (AMIA) New Investigator Award, which recognizes an individual for "early informatics contributions and significant scholarly contributions on the basis of scientific merit and research excellence." In addition, Dr. Markey just graduated her first Ph.D. student Dr. Mehul Sempat. She also received the 2006 American Society for Engineering Education Gulf-Southwest Section Outstanding Teaching Award. The ASEE is the premier organization of engineering education and its highly coveted teaching awards recognize true leaders in innovative teaching and dedication to student learning. Dr. Markey was recognized for developing innovative teaching techniques, dedication to student mentorship, and exceptional teaching performance.

Oct 2006

New Faculty

We are pleased to announce that William Paul Segars, Ph.D. joined DAI Labs on October 1, 2006 as Assistant Professor of Radiology. Dr. Segars comes to us from Johns Hopkins University where he was an assistant professor in the department of environmental health sciences. He received his Ph.D. in biomedical engineering from the University of North Carolina in Chapel Hill in 2001. His expertise is in medical imaging simulation and computer phantoms. Learn more about his work in our Research section.

Sep 2006

Grant Awards

We congratulate the following faculty who received grant awards this year. Joseph Lo Ph.D. received an NIH/NCI R01 grant of $1,323,573 from the NIH for a 4 year research project entitled "Tomosynthesis for Improved Breast Cancer Detection." Ehsan Samei Ph.D. received a $135,000 grant from the Susan G. Komen Foundation for a 3 year project entitled "Biplane Correlation Imaging (BCI) for Early Detection of Breast Cancer" as well as a $40,000 grant from the Cancer Research and Prevention Foundation for a 2 year project entitled "Stereo Imaging as a New Technique in Early Detection of Breast Cancer."

New Students

Vorakarn Chanyavanich, MS, MP '06 - PhD student (advised by Dr. Lo)
Robert Jones, 3rd year medical student, working with Ehsan Samei on Pediatric CT
Xiang Li, MS, MP '05 - PhD student (advised by Dr. Samei)
Ben Pollard, MP '06 - MS student (advised by Drs. Samei and Tourassi)
Christy Shafer, BS, BME '06 - PhD student (advised by Dr. Lo)
Lakshmi Seetharaman, BS, BME '06 - MS student (advised by Dr. Lo)

Congratulations to Christy Shafer, who received the prestigious Clare Boothe Luce Fellowship [ext. link]. The program promotes the advancement of American women through higher education in the sciences, engineering, and mathematics. The fellowship provides financial support for three top women graduate school candidates in order to "encourage women to enter, study, graduate and teach" in the sciences, mathematics, and engineering.

Aug 2006

DAI Labs mourns the loss of Carey Floyd

A Duke faculty member for over 20 years, Carey Everett Floyd, Jr., 52, died at home on August 28 after a lengthy battle with cancer. His love for life and for others sustained him during his illness, and he relished the time spent in conversation with family, friends, and his numerous students until his very last days. He continued the scientific work he so enjoyed right until the end of his life, even after experiencing diminished physical stamina in recent months. He was the epitome of courage, creativity, and dedication, and was greatly loved by many people.

Carey was born on March 17, 1954 in Nashville, Tennessee. He received his undergraduate degree from Eckerd College in Florida and his PhD in physics at Duke University in 1981 in the area of experimental nuclear physics. He took a postdoctoral fellowship at the Triangle Universities Nuclear Laboratory in 1982, and a subsequent postdoctoral fellowship in the department of radiology at Duke University Medical Center in 1983. He became a full professor of radiology and biomedical engineering at Duke in 1997.

An eminent scientist, Dr. Floyd made numerous significant contributions to the science of medical imaging. His early work included important contributions in nuclear medicine, including a pioneering method of reconstructing SPECT images known as the inverse Monte Carlo technique. He then became well known for many significant research efforts in digital radiography, and he established one of the pre-eminent laboratories in the world in the field of computer-aided detection and diagnosis (CAD). CAD uses artificial intelligence in conjunction with medical images and patient information in order to improve the detection and diagnosis of disease. One of his last research efforts was a novel combination of nuclear physics and medical imaging, wherein neutrons are used to stimulate gamma emission for the imaging of trace elements in the body. In recognition of his significant scientific contributions, Dr. Floyd was awarded a lifetime career achievement award from the department of radiology at Duke University on July 14, 2006.

Dr. Floyd served the scientific community well in many capacities, including several decades on grant review study sections at the National Institutes of Health. He was director of the Digital Imaging Research Division within the department of radiology at Duke from 1992 until 2004. He also was co-director of the Duke Tumor Registry, and was involved in the establishment of the new medical physics graduate program at Duke.

More important than his luminary scientific accomplishments was his superb mentorship of dozens of individual students over the past two decades. He mentored numerous PhD students in biomedical engineering, many of whom now have influential careers of their own. He truly cared for his students, and they greatly loved him. In recognition of Carey's superb mentorship of students, a new graduate fellowship at Duke University was established in his honor. The Carey E. Floyd, Jr., Graduate Fellowship will be administered by the Medical Physics Graduate Program at Duke, and will provide future generations of outstanding students the distinction of being named Floyd Fellows.

Carey was truly a renaissance man, excelling in numerous areas outside of science. He was a gifted musician, playing bass and guitar in ten bands over the years. He loved model rocketry and model trains [ext. link], and was a skilled craftsman, as evidenced by the numerous house renovation projects he undertook. He enjoyed boating, and most of all, he treasured the company of family and friends with whom he loved to converse for hours on end about interesting topics. He was a humble, caring, loyal, and courageous person who will be greatly missed by those who knew and loved him.

He is survived by his wife, Elizabeth Floyd; his father, Carey E. Floyd; and his stepmother, Ann Herbert Floyd of Nashville, Tennessee.

In lieu of flowers, the family requests contributions be made in Carey's memory to the Carey E. Floyd, Jr., Graduate Fellowship, in care of the Medical Physics Graduate Program, Duke University Medical Center, Suite 101, 2424 Erwin Road, Durham, NC 27705. Letters of condolence may be sent to the home.

Jul 2006

Carey Floyd Lifetime Career Achievement Award

Carey poses with his earliest (1987-1995) trainees. From left: Jim Bowsher, Seema Garg, Joseph Lo, Mike Munley, Al Baydush, and Gina Tourassi.

DAI Labs honors its most senior faculty member, Carey E. Floyd, Jr., PhD. A recognized authority in nuclear medicine image reconstruction, computer aided diagnosis (CAD), and neutron-stimulated imaging, he received a Lifetime Career Achievement Award from the Department of Radiology. More than 100 friends, former students, colleagues, and collaborators attended the celebration which included addresses by the chairman of radiology, Carl Ravin, MD, Mia Markey, PhD, Gregg Trahey, PhD, and Jim Dobbins, PhD. The celebration was held at the Nasher Museum of Art at Duke University on July 14, 2006. Pictures of the event available here.

May 2006


Esi Cleland, BS, was admitted to the PhD program in Medical Physics at Duke.
Janelle Bender, BS, joined the laboratory of Nimmi Ramanujam, PhD, at Duke BME department to work on her PhD.
Chee Liang Hoe, MA, joined a venture firm in Atlanta.
Nariman Majdi-Nasab, PhD, joined Eastman Kodak Company as a scientist in its CAD division.
Stanton Stebbins, MD, joined Emory University for a residency in pediatrics.


Chee Liang Hoe, MS, completed his MA in Physics.
Jonathan Jesneck, Amy Sharma, and Jessie Xia successfully defended their preliminary exams and achieved the PhD candidacy status.
Ehsan Samei, PhD, was promoted to Associate Professor in Radiology with tenure.
Rob Saunders, MA, successfully completed his PhD in Physics in May 2006. He will continue as a Research Associate with DAI Labs.
Georgia Tourassi, PhD, was promoted to Associate Research Professor in Radiology and Faculty in Medical Physics.
Jessie Xia, MS, completed her MS degree in statistics at Duke.

Awards and Honors

Devon Godfrey, PhD and co-authors were honored with a cover page acknowledgement for his recent publication in Medical Physics: "Optimization of the matrix inversion tomosynthesis (MITS) impulse response and modulation transfer function characteristics for chest imaging."

In May 2006, Joseph Lo, PhD and Ehsan Samei, PhD each received the Director's Award for Exemplary Service from the Medical Physics Graduate Program at Duke University.

Georgia Tourassi, PhD and co-authors received a Reviewers' Choice recognition for their submission to the American Association of Physicists in Medicine (AAPM) 2006 Annual Meeting, a paper entitled "Information-theoretic CAD system in mammography: investigation of An entropy-based indexing scheme for improved computational efficiency and robust performance."

Jan 2006

New faculty position advertised. DAILabs seeks an individual to fill a position at the Assistant Professor or Associate Professor level. For more information, please see the job posting.

DAI News

Here is a copy of our 2006 Newsletter: 2006 Summer DAI News (PDF)