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West Physics
3825 Paces Walk SE
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Atlanta, GA 30339

770-435-9186 • 1-866-275-WEST (9378) • FAX 770-599-2333

Office Hours: West Physics maintains liberal office hours for the convenience of our customers nationwide.


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News & Events

Vinobalan “Vino” Durairaj, Ph.D., DABR

Vino DurairajBiography

Before joining West Physics, Dr. Durairaj pursued a broad range of magnetic materials science research for his Ph.D. at the University of Kentucky. He developed novel compounds using sophisticated crystal growth techniques, characterized synthesized crystals using x-ray diffraction crystallography, and investigated their physical properties in the presence of applied electric and high magnetic fields.

Dr. Durairaj also has engaged in space physics research at the Indian Space Research Organization, as well as working in the area of cosmological theoretical physics. Finally, Dr. Durairaj has extensive teaching experience and has a great interest in helping others to understand and enjoy science and technology.

Dr. Durairaj is originally from Tirunelveli, India.


  • Doctor of Philosophy in Physics – University of Kentucky
  • Master of Science in Physics – University of Kentucky
  • Master of Science in Physics – Pondicherry University
  • Bachelor of Science in Physics – Manonmaniam Sundaranar University


  • American Board of Radiology – Diagnostic Radiological Physics


  • American Association of Physicists in Medicine
  • American Physical Society
  • Neutron Scattering Society of America


G Cao, V Durairaj, S Chikara, LE De Long, P Schlottmann – “Observation of Strong Spin Valve Effect in Bulk Ca3(Ru1-xCrx)2O7″ – Phys. Rev. Lett. 100 016604 (2008).

G Cao, V Durairaj, S Chikara, LE Delong, S Parkin, P Schlottmann – “Non-Fermi-liquid Behavior in nearly Ferromagnetic SrIrO3 Single Crystals” – Phy. Rev. B 76 100402(R) (2007).

G Cao, V Durairaj, S Chikara, S Parkin, P Schlottmann – “Partial Antiferromagnetism in Spin-chain Sr5Rh4O12, Ca5Ir3O12 and Ca4IrO6 Single Crystals” – Phys. Rev. B 75 134402 (2007).

S Chikara, V Durairaj, WH Song, YP Sun, XN Lin, A Douglass, G Cao – “Borderline Magnetism in Sr4Ru3O10: Impact of Dilute La and Ca Doping on Itinerant Ferromagnetism and Metamagnetism” – Phys. Rev. B 73 224420 (2006).

V Durairaj, S Chikara, XN Lin, A Douglass, G Cao, P Schlottmann, ES Choi, RP Guertin – “Highly Anisotropic Magnetism in Cr Doped Perovskite Ruthenates” – Phys. Rev. B 73 214414 (2006).

V Durairaj, XN Lin, S Chikara, E Elhami, A Douglass, G Cao, ZX Zhou, P Schlottmann – “Observation of Oscillatory Magnetoresistance Periodic in 1/B and B in Ca3Ru2O7″ – Phys. Rev. B 73 054434 (2006).

XN Lin, ZX Zhou, V Durairaj, P Schlottmann, G Cao – “Colossal Magnetoresistance by Avoiding a Ferromagnetic State in the Mott System Ca3Ru2O7″ – Phys. Rev. Lett. 95 017203 (2005).

Rosa McTee



Rosa McTee studied business and accounting at Manhattan Community College in New York City.  Ms. McTee has 15 years of experience in the medical physics industry and over 25 years of operational management experience prior to her current role. 
Ms. McTee is originally from New York.

Mary Quattlebaum, B.A.

Mary Quattlebaum


Ms. Quattlebaum studied International Affairs with a concentration in business, economics, and policy at Kennesaw State University in Kennesaw, GA. After graduating from college, Ms. Quattlebaum joined West Physics in February of 2008 and was in charge of West Physics’ administrative functions until moving into quality & process improvement in 2020.

Ms. Quattlebaum is originally from Columbia, South Carolina.


  • Bachelor of Arts; International Affairs – Kennesaw State University

Gregg Daversa, R.T. (R)(CT)(MR)

Gregg Daversa


Mr. Daversa’s experience base in the imaging industry spans over 25 years and encompasses a multitude of progressively more complex and challenging assignments. Prior to joining West Physics, Mr. Daversa worked at one of the nation’s largest outpatient and mobile imaging organizations, Insight Health Corp. Mr. Daversa started his career as a technologist, and then moved on to roles as an operations manager, clinical and didactic instructor, Director of Regulatory & Quality Improvement, and finally as Vice President of Clinical and Technology Services. During his years at Insight, he made significant advancements in the performance of the multimillion-dollar operation by building business relationships, upgrading technology, and implementing best practices for safety protocols and regulatory compliance.

In his most senior role at Insight, Mr. Daversa managed technology assessment, equipment procurement, and regulatory program for 60 fixed imaging sites and 100 mobile MRI & PET/CT units operating in 25 states. He identified opportunities to expand revenue generation and supported the business development team for mobile and imaging center acquisitions.

Mr. Daversa is originally from Jamestown, NY.


  • Associate of Science of Health Science – Jamestown Community College
  • School of Radiologic Technology – W.C.A. Hospital – Jamestown, NY
  • School for Advanced Imaging Technology – Albany Medical Center & College


  • American Registry of Radiologic Technologists – Magnetic Resonance Imaging, Computed Tomography & Radiography


  • American Society of Radiologic Technologists
  • American Healthcare Radiology Administrators
  • Radiological Society of North America

Seminars Presented

“Radiation Dose Reduction: Requirements and Options to Reduce Patient Dose” – 2013 AHRA Fall Conference (Chicago, IL) – October, 2013.

“CT Radiation Dose Reduction: Tying It All Together” – 2013 ASRT Educational Symposium and Annual Governance and House of Delegates Meeting (Albuquerque, NM) – June 2013.

“CT Radiation Dose Reduction: Tying It All Together” – 2013 AHRA Spring Conference (Los Angeles, CA) – April, 2013.

“The Business of Radiology” – 2008 MEDRAD Corporate Meeting of the Americas (Orlando, FL) – February, 2008.

“Preparing for a JCAHO Survey: Tips and Advice” – 3rd Annual Open MRI Conference (Las Vegas, NV) – May, 2000.

“Developing a Quality Improvement Program for an Open MRI Facility” – 2nd Annual Open MRI Conference (Las Vegas, NV) – March, 1999.

“MRI Registry Review” – 1995 ISRT Meeting (Indianapolis, IN) – October, 1995.

“Magnetic Resonance Angiography (MRA)” – North Carolina SRT Meeting (Asheville, NC) – October, 1995.