John Shepherd (physicist) explained

John Shepherd
Birth Name:John A. Shepherd
Birth Place:Austin, Texas
Nationality:American
Alma Mater:Texas Tech University (BS)
University of Virginia (PhD)
Organization:University of Hawaii
University of California San Francisco[1]
Occupation:Medical physicist
Years Active:1986-present
Known For:Radiomics

John A. Shepherd (born 1962) is an American physicist, professor of epidemiology and population sciences and director of the Shepherd Research Laboratory at the University of Hawaii Cancer Center in Honolulu, Hawaii. He is an expert in the use of dual-energy X-ray absorptiometry (DXA) for quantitative bone and soft tissue imaging, and pioneered the use of 3D optical imaging of the whole body for quantifying body composition and associated diseases including cancer risk, obesity, diabetes, and frailty. In 2016, he was the President of the Board of the International Society for Clinical Densitometry.[2]

Early life and education

Shepherd was born in Austin, Texas in 1962. He studied engineering physics at Texas Tech University in Lubbock, Texas, where he obtained his Bachelor of Science degree. He continued his education at the University of Virginia in Charlottesville, Virginia, where he received his PhD in engineering physics in 1993. He was the first to develop scintillating vapor-deposited Na(Tl) thin films for photon counting imaging detectors grown with a columnar structure for high spatial resolution.[3] He did his postdoctoral studies in biophysics at the Princeton University, where he adapted a phosphor created for color TV to emit green light well matched to the absorption of modern solid state detectors with very fast light output.[4]

Career

Shepherd designs and develops dual-energy X-ray absorptiometry systems, mammography and 3D optical biomarkers used to evaluate the risk of osteoporosis, breast cancer, and obesity.[5] He serves as the principal investigator for the National Institute of Diabetes and Digestive and Kidney Diseases funded Shape Up! Adults and Kids cohort.

Since 2020, Shepherd and his research team at the University of Hawaii Honolulu Cancer Center are working on Astro-3DO, the project which will use 3D optical cameras to measure the body shape and mass composition of astronauts in space. The work is supported by The Translational Research Institute for Space Health (TRISH).[6]

Since 2021, he was appointed as Deputy Director and Chief Scientific Officer at the University of Hawaii Honolulu Cancer Center.[7]

Awards and recognition

Patents

See also

Further reading

External links

Notes and References

  1. Web site: Comparing the Accuracy of Body Fat Scales . 2021-04-04 . ABC News . en.
  2. Web site: John Shepherd (0000-0003-2280-2541) . 2021-04-04 . orcid.org . en.
  3. Shepherd . J.A. . Sobottka . S.E. . Williams . M.B. . 1993-08-01 . Performance and fabrication of thin film NaI(Tl) scintillators for use on imaging photomultiplier tubes . 2021-04-04 . IEEE Transactions on Nuclear Science . 40 . 4 . 413–416 . 10.1109/23.256591. 1993ITNS...40..413S .
  4. Shepherd . John A. . 1997-11-01 . Study of afterglow in x-ray phosphors for use on fast-framing charge-coupled device detectors . 2021-04-04 . Optical Engineering . 36 . 11 . 3212 . en . 10.1117/1.601530. 1997OptEn..36.3212S .
  5. Web site: 3D body scanning is the new fitness technology . 2021-04-04 . www.kitv.com . en.
  6. Web site: Using 3D Cameras to Combat Muscle Atrophy for Astronauts . 2021-09-27.
  7. Web site: Senior Leadership - UH Cancer Center . 2021-09-27.
  8. Web site: NIH RePORTER projects . 2021-04-04 . reporter.nih.gov.
  9. Web site: John Shepherd - Fulbright Scholar Program . 2021-04-04 . cies.org.
  10. Web site: 2021 AIMBE Fellows - AIMBE . 2021-04-04 . en.
  11. Web site: Campbell . Matthew . 2024-05-20 . John Shepherd, PhD, Awarded B.H. and Alice C. Beams Endowed Professorship to Study Breast Cancer . 2024-06-17 . jabsom.hawaii.edu.
  12. Web site: AAPM History and Heritage - Fellows . 2024-06-17 . www.aapm.org.
  13. Web site: Multiple modality body composition analysis . 2021-04-04 . en.
  14. Web site: Bone densitometry using x-ray imaging systems . 2021-04-04 . en.
  15. Web site: Determining body composition using fan beam dual-energy x-ray absorptiometry . 2021-04-04 . en.
  16. Web site: Methods and apparatus for determining proportions of body materials . 2021-04-04 . en.
  17. Web site: Method for Assessing bone characteristics using digital 2-dimensional x-ray detector . 2024-06-17 . en.
  18. Web site: Device and method for determining proportions of body materials . 2024-06-17 . en.
  19. Web site: Method for Assessing bone characteristics using digital 2-dimensional x-ray detector . 2024-06-17 . en.
  20. Web site: Method for Assessing bone characteristics using digital 2-dimensional x-ray detector . 2024-06-17 . en.

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