Bell telephone magazine (1922) (14776243463)

Identifier: belltelephone7273mag00amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive



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these examinations, a radiothera-pist states the dose requirementsand such vital details as areas tobe excluded from radiation. Themedical physics staff then designsthe treatment plan by means of acomputer program to give the thera-pist what he wants; he examinesthe resulting printout and developsthe prescription. Holt emphasizes accuracy as wellas speed among the advantages ofcomputer-calculated treatment.The computer is such a powerfultool, he says. We can use it tooptimize a treatment plan for bestdosage, and can shift parametersaround until we get closest to theintent of the radiotherapist attend-ing the patient. If such treatmentcalculation were done by hand,wed have to be satisfied, as we usedto be, with much cruder results.But the computer, working so fast,can refine the calculations in very
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■■-■■ •;■;/?:•; .*■•> little time, and by averaging cangive us a spread from which theoptimum choice can be made. Intelligent terminalsand neutrons In addition to continually updat-ing the central computer programsas new knowledge becomes avail-able, the medical physics depart-ment at Memorial, always at thefrontier of research in its field, is ex-perimenting with the minicomputeras an intelligent terminal in placeof the teletypewriter. With a cath-ode ray tube as an adjunct, themini can produce rapid graphicdisplays—in three-dimensional rep-resentations, if necessary — andcan interact with the central ma-chine much faster than the tele-typewriter. Also under experimentare new sources of radiation: suchexotic sub-atomic particles, for ex-ample, as neutrons produced by aradioactive isotope supplied by theAtomic Energy Commission at$35,000 per microgram. Obviously,not many hospitals or laboratoriescan afford to experiment at thatlevel of expense. The whole purpo