
🧭 Timeline:
Dr. Richard M. Fleming and Nuclear Imaging



Core Nuclear‑Imaging Contributions
1968 to1970s — Foundational and Doctoral Physics and Nuclear Research
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Completes advanced doctoral physics training, including classified research involving positron–plasma annihilation (a conceptual precursor to PET physics).
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Establishes the physics and mathematical base that later informs his nuclear‑imaging methodologies.
1980s — Transition into Medicine and Cardiology
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Completes medical training and begins integrating nuclear physics with cardiovascular medicine.
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Early work focuses on regional blood‑flow measurement, a core principle of nuclear cardiology.
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Foundational work leading to the development of the InflammoThrombotic Immunologic Response (ITIR) Disease (ITIRD) Theory—originally The Fleming Unified Theory of Vascular Disease (FUTVD).
1990s — Nuclear Cardiology and Flow Quantification
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Develops the Quadratic Blood Flow Equation, a mathematical model for quantifying coronary blood‑flow reserve and early precursor of A.I.^2.
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Begins applying nuclear‑imaging principles to cardiology, particularly SPECT and early PET modalities.
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Establishes himself as a nuclear cardiologist, combining physics, imaging, and clinical cardiology.
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Begins combining ITIRD and early versions of FMTVDM to define heart disease and measure which treatments work and those that do not.
1990s to 2000s — SPECT and PET Imaging and Metabolic Measurement of ITIRD Using FMTVDM
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Earns special certifications in Positron Emission Tomography (PET).
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Expands research into metabolic imaging, focusing on inflammation, ischemia, thrombosis, immunologic function and perfusion (InflammoThrombotic Immunologic Response; ITIR) continuum.
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Continues to define what will become the FMTVDM calibrated—quantitative patented methodology.
2000s — Continued Development of FMTVDM Quantitative Nuclear Imaging
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Publishes work on quantitative nuclear imaging, arguing for measurement‑based imaging rather than qualitative or SUV interpretations.
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Continues refining isotope‑based measurement of blood flow and metabolic activity.
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Lays groundwork for a standardized, reproducible imaging method.
2010s — FMTVDM Patent and Imaging System
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Secures the patent for FMTVDM (Fleming Method for Tissue and Vascular Differentiation and Metabolism).
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Patent covers methods and devices for measuring metabolic and regional blood‑flow differences using isotopes and imaging systems.
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Promotes the method as a calibrated, quantitative nuclear‑imaging standard.
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Continues to expand applications to cardiology, oncology, inflammatory and infectious diseases.
2020s — Continued Nuclear‑Imaging Advocacy
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Continues presentations at conferences on nuclear cardiology, nuclear medicine, and quantitative imaging.
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Emphasizes the shift from qualitative to quantitative nuclear imaging.
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Continues publishing and lecturing on ITIRD.
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Continues publishing and lecturing on PET, SPECT, and metabolic imaging.
2026 — FMTVDM FRONTIER
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Launches FMTVDM Whole Body SPECT and PET.
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Initiates Select Nation Status (SNS) Country Initiative.
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Redefines Medical and Scientific Global Leadership.




