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R J Shalek

Publications and source records attributed to R J Shalek.

At least 19 recordsLinked to original sources
PubMed1995

Fetal dose from radiotherapy with photon beams: report of AAPM Radiation Therapy Committee Task Group No. 36.

Approximately 4000 women per year in the United States require radiotherapy during pregnancy. This report presents data and techniques that allow the medical physicist to estimate the radiation dose the fetus will receive and to reduce this dose with appropriate shielding. Out-of-beam data are presented for a variety of photon beams, including cobalt-60 gamma rays and x rays from 4 to 18 MV. Designs for simple and inexpensive to more complex and expensive types of shielding equipment are described. Clinical examples show that proper shielding can reduce the radiation dose to the fetus by 50%. In addition, a review of the biological aspects of irradiation enables estimates of the risks of lethality, growth retardation, mental retardation, malformation, sterility, cancer induction, and genetic defects to the fetus.

Female↗
PubMed1990

RPC technical report #18: information that should be included in every patient's radiotherapy treatment record (external beam).

The Radiological Physics Center (RPC) has frequently been asked to develop a model daily treatment record. It became obvious that there was some minimum information that must be in patient records. However, equally obvious was the fact that practices at institutions could be very different, so organization of information in records was different. We have compiled a list of data that must be in a patient's treatment record to assure that the radiation treatment can be reconstructed at a later date. The ordering of this information in forms and records is left to the discretion of the institution.

Forms and Records Control↗
PubMed1986

Mailable TLD system for photon and electron therapy beams.

The mailable TLD system developed by the Radiological Physics Center for monitoring calibration of photon beam energies from cobalt 60 to 25 MV and electron beam energies from 6 to 20 MeV has been in use since 1977 for photons and since 1982 for electron beams. Design considerations, proper use of the system and calibration techniques are detailed. The accuracy of the system is comparable to that of ion chamber measurements made in a water phantom, although it shows less precision.

Electrons↗