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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. 1951. 1953.

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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



1951

1953

Argonne Cancer Research Hospital (ACRH)

(AttachedtoBillingsHospital)


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


22-MV beam characteristics

Am. J. Roegenology, Radium Ther. v.60 p.153, 1948

7


Isodose Distributions

22-MV beam

9cm dia. at 75 cm

Am. J. Roegenology, Radium Ther. v.60 p.153, 1948


9


Lanzl, Skaggs, Machinist

Dr Carpenter, Therapist, Patient, Lanzl

2,000-Ci Isocentric Co-60 unit, SAD = 80cm.


Controls and Lead Glass

Lanzl Co-60 unit

and dose plotting device

Observation Window

2,000-Ci Co-60 unit


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





Skaggs at the Lineac controls

Therapist, Dr. Mel Griem, Physics Tech.

Routine operation of the Lineac required both a physics and a therapy technician.



2D Isodose Hand Calculation

Fletcher’s Textbook of Radiotherapy


2D Compensator

Fletcher’s Textbook of Radiotherapy


vvv

Relative Biologic Effectiveness

RBE = 4

Oxygen Enhacement Ratio

Eric J. Hall’s textbook “Radiobiology for the Radiologist”


vvv

Neutrons time of flight spectra


ACRH neutron facility floor plan

Radiology, v.111, p.471, 1974





Relative Biological Effectiveness

Oxygen Enhancement Ratio

Radiobiology for the Radiologist by Eric J. Hall



vvv

Neutrons difference spectra

Phys. Med. Biol. v. 24, p. 721, 1979


vvv

Solutions for k(E).K(E)

30

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)


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