Education

Doctor of Philosophy
Duke University ■ Durham, NC ■ Candidate
    Advisor: Dr. James T. Dobbins III
    Diagnostic Imaging focus
    (Proposed) dissertation title - Correlated Polarity Noise Reduction:
       Development and Assessment of a Novel Nonlinear Noise Reduction Algorithm


Bachelor of Arts

Summa Cum Laude ■ Central College ■ Pella, IA ■ 2008
    Advisors: Drs. Viktor Martisovits, Paul Naour, and Mark Johnson
    Math and Psychology minors
    Senior honors thesis title - Image Analysis: Building a Rabbit MRI Brain Atlas
    Study Abroad (London, UK)

Research Experience

PhD Researcher
Duke University ■ Durham, NC ■ 2008-Present
    Mentored by Dr. James T. Dobbins, III, Carl E. Ravin Advanced Imaging Laboratories
    Formulated novel motion correction techniques for a lower-cost CT system
    Simulated x-ray scatter and radiographic antiscatter grids with the PENELOPE suite of Monte Carlo
       simulation software
    Contributed to the development of correlated polarity noise reduction (CPNR)
    Generalized 1-D MTF measurement methodologies for the estimation of 2-D MTF
    Created a unique collection of tools for the evaluation of linear and nonlinear image processing algorithms - 
       specifically their resolution and distortion properties

Graduate Researcher
University of Wisconsin, Madison ■ Madison, WI ■ 2011
    Supervised by Dr. Charles Mistretta, Medical Physics
    Studied HYPR and VIPR techniques applied to magnetic resonance angiography
    Investigated possible hybridization of CPNR with HYPR to improve SNR

Summer Intern

West Virginia University ■ Morgantown, WV ■ 2007
    Mentored by Drs. Bernard Schreurs and Susan Lemiux, WVU Center for Neuroscience
    Operated GE Signa Excite 3T MRI
    Examined ventricular volume changes in the rabbit model of human Alzheimer's disease
    Used neuroscience software for data analysis (AFNI, FSL, etc.)
    Developed techniques for automated image segmentation and ventricular volume measurement using MATLAB

Honorary Laboratory Assistant

University College London ■ London, UK ■ 2005
    Supervised by Dr. Katherine Jeffery, Jeffery Laboratory
    Observed experimental studies of the rat hippocampus and its role in spatial memory formation and
       retrieval tasks
    Assisted in data collection from in vivo hippocampal place cells
    Used MATLAB in data collection and analysis

Teaching Experience

Graduate Teaching Assistant
Duke University ■ Durham, NC ■ 2010-2011
    Graduate-level Advanced Medical Imaging Physics (MEDPHY 331)
    Implemented “one-minute essays” and blogs (see Teaching Statement)
    Conducted interactive test review sessions
    Wrote homework assignments
    Graded assignments, tests, and presentations
    Held regular office hours

Undergraduate Teaching Assistant
Central College Pella, IA 2006-2008
    Undergraduate-level General Physics I and II (PHYS 111 and PHYS 112)
    Directed one out-of-class help session per week
    Implemented practice quizzes and tests as teaching and discussion aids
    Graded papers, homework, quizzes and tests (average of two assignments per week for 45 students)
    Taught proper laboratory and experimental procedure
    Led and guided experiments; Assessed weekly laboratory reports

Upward Bound Tutor-Counselor
Central College Pella, IA 2005
    Served under the Central College Upward Bound Pre-College Program
    Mentored 14 young men as a resident adviser
    Taught introductory college-level physics and calculus to 16 high school students
    Designed physics laboratories covering general mechanics
    Coached, organized, and supervised athletic events, service projects, and field trips for 114 students
       (UB Summer Schedule 2005)


Honors and Awards

Duke University
Certificate in College Teaching ■ In progress 
Director's Award for Exemplary Service (Medical Physics) ■ 2013
Carey E. Floyd Graduate Fellowship (Medical Physics) ■ 2012
Excellence in Teaching Assistantship Award (Medical Physics) ■ 2011, 2012
NIH Cross-disciplinary Training Grant in Medical Physics (TG32 EB007185) ■ 2009-2011
Duke Medical Physics PhD Fellowship ■ 2008-2009

Central College

Richard J. Mentink Award in Physics ■ 2008
Psi Chi National Honor Society in Psychology ■ 2006-2008
Iowa Conference All-Academic Track Team ■ 2006
Varsity Letter Award, Track and Field ■ 2005,2006
Alpha Zeta Mu Honor Society ■ 2005-2006
Collegiate All-American Scholar ■ 2005
H.S. Kuyper Full Tuition Scholarship ■ 2004-2008
Robert C. Byrd Honors Scholar ■ 2004-2008
Thrivent Financial for Lutherans Scholarship ■ 2004-2008
Dean’s List ■ 2004-2008
National Dean’s List ■ 2004
State of Iowa Scholar ■ 2004

Leadership Activities

Duke University
Carl E. Ravin Advanced Imaging Laboratories Student Representative ■ 2012-Present
Ad Hoc Reviewer, Medical Physics ■ 2012
Medical Physics Recruitment Committee ■ 2011-Present
Medical Physics Student Handbook Executive Editor ■ 2009-2011
Medical Physics Student Advisory Board ■ 2009-2010
Medical Physics Liaison to the Graduate School Association ■ 2009-2010
Medical Physics Student Mentorship Coordinator ■ 2009-2010

Central College

Psi Chi Vice President (elect), Psi Chi President (pro tempore) ■ 2007
Campus Ministries Worship Team (Bassist) ■ 2006-2008
Campus Ministries Executive Team ■ 2006-2008
Study Abroad (London, UK) ■ 2005
Leadership Development Institute ■ 2005
Pietenpol Dormitory Hall Council ■ 2004-2005
Intervarsity Technology Team ■ 2004-2005
Central College Honors Program ■ 2004-2008

Publications

Wells, J. R. & Dobbins, J. T. III. (2013). Frequency response and distortion properties of nonlinear image processing
algorithms and the importance of imaging context. Medical Physics 40(9). [In press] 

Wells, J. R. & Dobbins, J. T. III. (2012). Estimation of the two-dimensional presampled modulation transfer function of

Lemieux, S. K., Smith-Bell, C. A., Wells, J. R., Ezerioha, N. M., Carpenter, J. S., Sparks, D. L. & Schreurs, B. G. (2010).

Presentations

Wells, J. R., Segars, W. P., & Dobbins, J. T. III. TH-A-103-10 : Improved Segmentation of Low-Contrast Fibroglandular
Structures in High-Noise Breast CT Volumes for XCAT Modeling. 55th Annual Meeting of the AAPM, 2013 August 4-8, Indianapolis, IN. Hendee, W. R. (Ed.). (Oral presentation)
edge test device. 54th Annual Meeting of the AAPM, 2012 July 29 – August 2, Charlotte, NC. Hendee, W. R. (Ed.). Medical Physics 39(6): 3894. (Oral presentation)

Wells, J. R. & Dobbins, J. T. III. A closed-form, analytical solution to 3-D motion correction in lower-cost CT. 
MEDPHY 370: Frontiers in Biomedical Science; 2012 April 4, Duke University, Durham, NC. (Invited Presentation)

Wells, J. R., Segars, W. P., Kigongo, C. J. N. & Dobbins, J. T. III. A new approach to motion correction applied to lower-cost
CT for the developing world. 2010 Memphis Bioimaging Symposium, 2010 November 4-5, Memphis, TN. (Poster presentation - Honorable Mention)

Wells, J. R., Segars, W. P., Frush, D. P., McAdams, H. P., Kigongo, C. J. N. & Dobbins, J. T. III. A post-acquisition motion
correction strategy for lower-cost computed tomography for the developing world. 2010 NIBIB Training Grantees Meeting, 2010 June 24-25, Bethesda, MD. (Invited presentation)

Conference Proceedings and Presentations

image processing algorithms. SPIE Medical Imaging 2013, Physics of Medical Imaging; 2013 February 9-14; Lake Buena Vista, FL. Nishikawa, R. M. & Whiting, B. R. (Eds.), 8668. Bellingham, WA: SPIE – The International Society for Optical Engineering; 2013 March. (Oral presentation)

Dobbins, J. T. III, Wells, J. R., & Segars, W. P. Dose reduction in CT with correlated-polarity noise reduction: comparable
image quality at half the dose with projection space processing. SPIE Medical Imaging 2013, Physics of Medical Imaging; 2013 February 9-14; Lake Buena Vista, FL. Nishikawa, R. M. & Whiting, B. R. (Eds.), 8668. Bellingham, WA: SPIE – The International Society for Optical Engineering; 2013 March. (Oral presentation)

Dobbins, J. T. III & Wells, J. R. Correlated-polarity noise reduction: feasibility of a new statistical approach to reduce
 image noise. SPIE Medical Imaging 2011, Physics of Medical Imaging; 2011 February 12-17; Lake Buena Vista, FL. Samei, E. & Pelc, N. J. (Eds.), 7961. Bellingham, WA: SPIE – The International Society for Optical Engineering; 2011 March. (Oral presentation)

Wells, J. R., Segars, W. P., Kigongo, C. J. N. & Dobbins, J. T. III.
Refinement of motion correction strategies for lower-cost
CT for under-resourced regions of the world. SPIE Medical Imaging 2011, Physics of Medical Imaging; 2011 February 12-17; Lake Buena Vista, FL. Samei, E. & Pelc, N. J. (Eds.), 7961. Bellingham, WA: SPIE – The International Society for Optical Engineering; 2011 March. (Poster presentation)

Dobbins, J. T. III, Wells, J. R., Segars, W. P., Li, C. M. & Kigongo, C. J. N. Initial investigation into lower-cost CT for resource
 limited regions of the world. SPIE Medical Imaging 2010, Physics of Medical Imaging; 2010 February 13-18; San Diego, CA. Samei, E. & Pelc, N. J. (Eds.), 7622. Bellingham, WA: SPIE – The International Society for Optical Engineering; 2010 April. (Poster presentation)

Skills

Computing
MATLAB; GUI design; ImageJ/FIJI; Monte Carlo Software (PENELOPE); C; FORTRAN 77; LINUX; Mathematica; HTML; Web design; Microsoft Office Suite; Adobe Photoshop.

Equipment

GE Revolution XQ/i; (Prototype) GE Chest Tomosynthesis Unit;  GE Signa 3T MRI; Forklift and order selector certified.

Other

Dark room technique; Digital and film photography; Electronics (analog and digital circuitry); Welding (stick, MIG, and brazing); Carpentry; Construction.

Professional Membership

The International Society for Optics and Photonics (SPIE)
The American Association of Physicists in Medicine (AAPM)
The Southeastern Chapter of the AAPM (SEAAPM)

Updated 07/28/2013