Retired at age 69 from regular position; available for occasional
November 1990 - December 1997
USAF Medical Center Keesler
Biloxi MS 39534-5300
Responsible for clinical physics, including calibration and quality assurance of CLINAC 6-100 and 2100C accelerators, in a radiation therapy department treating about 40 patients each day.
Create special devices for patient positioning and beam shaping for customized electron and photon beam therapy.
Teach in-service training for Therapy Technologists and other
December 1989 - May 1990
Department of Radiation Oncology
Ohio State University
300 W. Tenth Ave.
Columbus, Ohio 43210-1228
Temporary position for acceptance testing, calibration, and beam
data acquisition with three new Siemens KD and MD accelerators in a new
cancer treatment center.
|December 1976 - July 1989
Department of Radiation Oncology
Major areas of responsibility have included:
Startup and calibration of TOSHIBA LMR-15 linac including 10 MV x-ray and 6-16 MeV electron beams and the development of our own beam blocking system, large-field and low-energy electron beams, and whole-skin electron therapy for mycosis fungoides.
Shielding design and installation supervision for Varian CLINAC 4-100 including CTM computer monitor system; commissioning and calibration including data entry to THERAPLAN treatment planning computer system.
Calibration and data entry for Varian CLINAC 1800.
Calibrations and operational adjustments of Picker C-9 isocentric cobalt therapy machine.
Specification, purchase, and startup of PDPll computer system to run TP-11 treatment planning system as an add-on option from AECL, with extra capabilities for machine control and real-time data acquisition applications.
Brachytherapy Physics including intracavitary 137Cs and interstitial 125I, 198Au, and 192Ir in temporary and permanent implants. Assist with sterile procedures, check source calibrations, maintain inventory, calculate prescribed activity and absorbed dose distributions.
Development of a B.S. Physicist with no prior medical experience, from the position of electronics technician to that of Clinical Dosimetrist, with nearly full responsibility for routine treatment planning, therapy machine tune-up and calibration checks, and fabrication of customized radiation therapy appliances.
Training and supervision of therapy technologists in Physics applications including routine machine setting calculations, and regular checking of therapy patient records for accuracy and for the appropriate use of therapy modalities and calculation methods.
Periodic checks at a satellite small-town hospital to meet NRC and
AHA requirements for physics support of their Cobalt therapy program.
|Specification, purchase and installation of equipment for a
complete 700 square foot instrument shop including machine tools chosen
for their versatility to accommodate awkward pieces for patient
positioning devices, as well as bench space and fume hood for working
with lead, 158o alloy, wax, silicone latex, vinyl molding
compound, and other materials used for x-ray and electron beam
The Radiological physics support at Riverside Methodist Hospitals has included self-sufficiency for maintenance and adjustment of the TOSHIBA LMR-15 electron accelerator and for immediate response to diagnose and correct minor faults on the other equipment. Although we use the manufacturers' service representatives for routine care of the Varian CLINAC 1800 and 4/100 accelerators and XIMATRON simulator we avoid unnecessary downtime by making adjustments and temporary repairs locally and knowing what is needed when we call for service.
1964 - Dec. 1976
Medical Physics Department
Michael Reese Hospital and Medical Center, Chicago, Illinois
Radiation Therapy Physics: Operation, maintenance, and improvement of 35 MeV Stanford and 6 MeV Varian linear accelerators for medical use, including computer aided design of optimized therapy port for 5-40 MeV electrons using a novel annular secondary scatterer for beam flattening.
Patient positioning aids such as retroreflective monitor using an optical pointer and coaxial photoelectric detector to interrupt the therapy machine and/or signal a technician if the patient moves away from a preset position by more than the chosen size of retroreflective adhesive tape target applied to the patient's skin.
Development of dosimetry instrumentation such as a digital dose integrator using a capacitive charge transfer system to achieve long-term stability and accuracy over a wide range of dose rates.
Research in Pulse Radiolysis: Responsible for adapting 35 MeV linear accelerator to experimental use with single pulses of electrons and for design and construction of optical and electronic systems to observe transient chemical products by microsecond absorption spectrophotometry in a research program sponsored by Dr. J. Ovadia of Michael Reese Hospital and Dr. L. I. Grossweiner of Illinois Institute of Technology.
Accelerator Physics: Responsible for upgrading of 35 MeV Stanford
linear accelerator, including design and construction of electron beam
focusing and steering magnets, beam position and waveform monitors, and
related high vacuum and temperature control systems.
|1954 - 1964
1954 Research Assistant
Department of Radiology,
Radiation Therapy Physics: Operation, maintenance, and improvement of Allis-Chalmers 24 MeV betatron for x-ray and electron therapy. Design specialized appliances for field shaping and patient positioning.
Calibrate and plot x-ray and electron depth-dose distributions. Consult with oncologist and technician on multiple-port and shaped-field treatment planning. Assist with patient preparation and positioning.
Design and build electro-optical analog computer for instantaneous display of isodose curves in multiple-port therapy planning.
Radiobiology Research: Design special appliances and instrumentation and assist with animal irradiation experiments. Participate in study of effect of patient's skin temperature upon skin reaction, with air jet cooling in an electron therapy port. Conduct experiments with pulsed radio-frequency irradiation of tumor-cell suspensions and macromolecules, using modified short-wave radio transmitter.
Teaching: Parts of a year-long course in radiological physics for residents in radiology and biological research personnel. Work with residents and staff doctors on radiotherapy planning and instrumentation
|1950 - 1954
Institute for Nuclear Studies
Operate 100 MeV G.E. betatron for experimental irradiations and machine adjustments.
Fabricate new accelerator tube and modified electron gun assemblies. Rebuild mass spectrometer leak detector, high vacuum equipment, ion chamber instruments.
|Education and Professional Affiliations
|B.S. (Physics) University of Chicago, 1954.
M.S. (Applied Physics) Illinois Institute of Technology,
Member, American Association of Physicists in Medicine
Member, American Association for the Advancement of Science
Member, Institute of Electrical and Electronic Engineers
Member, IEEE Computer Society
Attended AAPM Summer School, "Physics of Nuclear Medicine," Bucknell University, 1972.
AAPM Summer School, "Physical Aspects of Hyperthermia," Dartmouth College, 1981.
Varian customer training program, Basic and Advanced Maintenance of CLINAC 4/ and 6/100, November 1981.
AAPM Summer School, "Update on Physics of Nuclear Medicine," Fairleigh Dickinson University, 1983.
AAPM Summer School, "Magnetic Resonance Imaging",
University of Portland, 1985.
|L. L. Haas and G. H. Sandberg, "Modification of Depth Dose
Curves of High Energy X-Pay and Electron Beams by Interposed Bone." Radiology 66,
W.S. Moos and G.H. Sandberg, "Photographic method for Use in Isodose Plotting." Proc. Instrument Society of America 11, (1965).
L. L. Haas and G. H. Sandberg, "Modification of Depth Dose Curves of Various Radiations by Interposed Bone." British Journal of Radiology 30, 9 (1957).
G. H. Sandberg and W. S. Moos, "An Electronic Isodose Computer for Planning Multiportal Radiation Therapy, Featuring Instantaneous Display of Isodose Curves with Continuous Variability of Position and Fractional Dose in Each Field." Radiology 68, 103 (1957). (Abstract; work in progress and scientific exhibit at RSNA meeting; Award of Merit)
G. H. Sandberg, "Contour Plotter Monitors Multiple Beam Radiation." Electronics, Dec. 1958
L. I. Grossweiner, A. F. Rodde, G. Sandberg, J. Chrysachoos. "Pulse Radiolysis of Aqueous Eosin." Nature 210, 1154 (1966).
J. Ovadia. "Electron Energy Calibration by Nuclear Activation 'Ihresliolds, 10 - 25 MeV." Annals of N.Y. Acad. of Sci. 161, 3 July 1969.
J. Ovadia, F. Borger, J. Sadauskis, and G. H. Sandberg. "Limitations in the Use of Scattering Foils to Produce Flattened Distribution with Electrons of 10-40 MeV." Quarterly Bulletin of the AAPM, p. 18, December 1969 (abstract)
J. Ovadia, F. Borger and G. H. Sandberg. "Photodisintegration in oxygen and Energy Calibration of Electron Accelerators." Physics in Medicine and Biology 15, 140 (1970). (abstract)
G. H. Sandberg. "An Electro-Optical Patient Localization Monitor Using Retro-Reflecting Tape." Physics in Medicine and Biology 15, 192 (1970). (abstract)
G. H. Sandberg. "Apparatus for Pulse Radiolysis Research Assembled at Michael Reese Hospital, Radiation Therapy Department, Chicago, Illinois." Master's Thesis, Department of Physics, Illinois Institute of Technology. (Contains bibliography of 12 publications by others on radiation chemistry of organic dyes and macromolecules using apparatus described above.)
G. H. Sandberg "Patient Position Monitoring Methods and System for Use During Medical Diagnostic and Therapeutic Procedures." U.S. Patent no. 3629594 issued October 1971. Now a commercial product as the "Isovigilant" retroreflective laser pointer, available from Gammex, Inc, Milwaukee, Wis.