Polite Welcome:

Hello there! My name is Ryan Paul and I am elated you have taken the time to peruse this digital concoction of mine. I have been employed in the field of Nuclear Medicine for roughly 10 years and created this as a reference tool for other professionals that specialize in Nuclear Cardiology .

How I Am, Where I Am:

I was raised in Clarksville, TN which is roughly fifty minutes northwest of Nashville. I attended Austin Peay State University which offers a joint program in Nuclear Medicine Technology with Vanderbilt University in Nashville, TN. After fulfilling my undergraduate requirements with APSU I was accepted into the program and spent an entire year there with some of the most well known contributors and educators to the field of Nuclear Medicine. Upon finishing the program I had the honor of receiving my first job with Emory Healthcare. After four years of managing a general nuclear department I yearned for a faster paced environment. I gladly accepted the role for a chief technologist position at a newly established outpatient cardiac facility in Tucker, GA., which is located right outside of Atlanta. As of today I am happily employed with Atlanta Heart Specialists, LLC and advocate any technologist to look into the perks of becoming an expert in the field of Nuclear Cardiology.

Camera Experience

  • Elscint/GE - SP4
  • Elscint/GE - SP6
  • Elscint/GE - Cardial
  • Elscint/GE - Helix Dual-Head
  • GE - PET Advance Nxi
  • GE - Millenium MG
  • GE - Millenium MPR
  • GE - Myosight
  • GE - VG Millenium (First Generation)
  • GE - VG Hawkeye (Prototype)
  • GE - Infinia Hawkeye
  • GE - Ventri
  • Adac - Genesys
  • SMV/GE- FX40 (Belonged in a museum)


  • Bachelor of Science in Radiologic Technology - 2002
  • Certified Nuclear Medicine Technologist - 2002
  • Nuclear Cardiac Technologist - 2006


  • American Society of Nuclear Cardiology
  • Society of Nuclear Medicine


  •  ASPECT Trial: Apadenoson - 2011-2012

Current Interests Within Nuclear Medicine

  • UltraSPECT
  • GE 530c
  • Nuclear Cardiology Protocol Enhancements
  • OSEM/MLEM Filtering Techniques
  • A2A Receptor Agonists
  • Non-ubiquitous Cardiac Perfusion Agents


  • The Thallium Stallions - Southeastern Conference in Atlanta Fall 2007


Essential Links

Educational Links


  • Atlanta Heart Specialist's WBR DGP Protocol & Stress Hierarchy

    WBR Dual Gated MPI

    " The LVEF at rest is one of the most important prognostic factors in chronic CAD and is inversely associated with mortality. The LVEF with exercise similarly provides strong prognostic information. A drop in LVEF with stress is associated with severe CAD and predicts poor outcome at 2 to 5 years.......The presence of regional wall motion abnormalities has been associated with high-grade stenosis and worse outcome. Thus, there is benefit to performing gated SPECT imaging for both rest and stress studies." - Nuclear Cardiology: Practical Applications - Gary V. Heller, Robert C. Hendel

    Abnormal study which was performed with a Dual Gated Protocol w/UltraSPECT

    on a ECToolbox licensed Xeleris workstation

    Wide Beam Reconstruction

    " In conclusion, as a result of incorporation of resolution recovery with OSEM and the additional implementation of noise reduction with WBR, these new methods afford gated myocardial perfusion SPECT functional image quality with half-time acquisitions equivalent to, or possibly superior to, that achieved with full-time acquisitions processed with FBP. Image quality with WBR is superior, facilitating recognition of wall motion abnormalities in patients with SPECT perfusion defects. " - Journal of Nuclear Cardiology: Volume 15 #4- Dr.Gordon DePuey

    *Conventional Imaging

    Rest Emission = 23 seconds/frame = 14 minutes 38 seconds

    Stress Emission= 20 seconds/frame = 12 minutes 50 seconds

    Total Imaging Time = 27 minutes 28 seconds

    *Xpress 'Half-Time' UltraSPECT

    Rest Emission = 15 seconds/frame = 9 minutes 50 seconds

    Stress Emission= 10 seconds/frame = 6 minutes 50 seconds

    Total Imaging Time = 16 minutes 40 seconds

    *Xpress3 'Quarter Time' UltraSPECT

    Rest Emission = 6 seconds/frame = 4 minutes 26 seconds

    Stress Emission= 4 seconds/frame = 3 minutes 14 seconds

    Total Imaging Time = 7 minutes 40 seconds

    *Imaging Times Displayed are for Dual-Headed Gamma Cameras

Recommended Nomenclature

  • Gary Heller (Author), Robert Hendel (Author)

  • Elpida S. Crawford (Author), Syed Husain (Author)

  • Tomas B. Garcia

  • Joel Fuhrman

  • T. Colin Campbell (Author)

  • Peter Valk, Dominique Delbeke, Dale Bailey, David Townsend, Michael Maisey