Medical Physics before the Millennium A Personal Experience Franca T. Kuchnir, PhD, FAAPM Associate Professor Emerita The University of Chicago Department.

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Presentation transcript:

Medical Physics before the Millennium A Personal Experience Franca T. Kuchnir, PhD, FAAPM Associate Professor Emerita The University of Chicago Department of Radiation and Cellular Oncology April 27, 2013

Sealed glass Radon applicators

Argonne Cancer Research Hospital (ACRH) (Attached to Billings Hospital)

Dr. Kerst with the 2.5 and 22 MeV betatrons (at the University of Illinois)

Kerst and Skaggs with the doughnut. Skaggs points at the electron beam exit port. Med. Phys. 2, p297,1975

7 22-MV beam characteristics Am. J. Roegenology, Radium Ther. v.60 p.153, 1948

22-MV beam 9cm dia. at 75 cm Isodose Distributions Am. J. Roegenology, Radium Ther. v.60 p.153, 1948

9

2,000-Ci Isocentric Co-60 unit, SAD = 80cm. Lanzl, Skaggs, MachinistDr Carpenter, Therapist, Patient, Lanzl

2,000-Ci Co-60 unit Lanzl Co-60 unit Controls and Lead Glass Observation Window and dose plotting device

2-MV Van de Graaff Patient set up Controls and Lead Glass Viewing Window

Text Dr. Henry Kaplan showing the insides of the 6-MeV lineac developed to treat cancer The first patient treated with electrons for retinoblastoma in 1957 Stanford University’s First Medical Lineac

5-50 MV Lineac Power Vault

5-50 MV Lineac Gantry beam transport

5-50 MeV Lineac rotating and scanning gantry

Routine operation of the Lineac required both a physics and a therapy technician. Skaggs at the Lineac controlsTherapist, Dr. Mel Griem, Physics Tech.

Measurements for treatment planning

19 Fletcher’s Textbook of Radiotherapy 2D Isodose Hand Calculation

2D Compensator Fletcher’s Textbook of Radiotherapy

vvv Eric J. Hall’s textbook “Radiobiology for the Radiologist” Relative Biologic Effectiveness RBE = 4 Oxygen Enhacement Ratio

vvv Neutrons time of flight spectra

ACRH neutron facility floor plan Radiology, v.111, p.471, 1974

Neutron energy spectra

25 Deuterium gas target and cooling system

Fermilab Neutron Therapy Facility

Oxygen Enhancement Ratio Relative Biological Effectiveness Radiobiology for the Radiologist by Eric J. Hall

vvv

Neutrons difference spectra Phys. Med. Biol. v. 24, p. 721, 1979

vvv 30 Solutions for k(E).K( E) Phys. Med. Biol. v. 24, p. 721, 1979

vvv Solutions for k(E) Phys. Med. Biol. v. 24, p. 721, 1979

“They shall beat their swords into plowshares.” (Isaiah 2:4, Joel 3:10, Micah 4:3)