The construction of computer tomographic phantoms and their application in radiology and radiation protection |
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| Authors: | M Zankl R Veit G Williams K Schneider H Fendel N Petoussi G Drexler |
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| Institution: | (1) Dr. von Haunersches Kinderspital, Ludwig-Maximilians-Universität, Lindwurmstrasse 4, D-8000 München 2, Germany;(2) Gesellschaft für Strahlen- und Umweltforschung (GSF) München, Institut für Strahlenschutz, Ingolstädter Landstrasse 1, D-8042 Neuherberg, Germany;(3) Present address: Department of Radiology, Medical College of Ohio, Toledo, Ohio, USA |
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| Abstract: | Summary In order to assess human organ doses for risk estimates under natural and man made radiation exposure conditions, human phantoms have to be used. As an improvement to the mathematical anthropomorphic phantoms, a new family of phantoms is proposed, constructed from computer tomographic (CT) data. A technique is developed which allows any physical phantom to be converted into computer files to be used for several applications. The new human phantoms present advantages towards the location and shape of the organs, in particular the hard bone and bone marrow. The CT phantoms were used to construct three dimensional images of high resolution; some examples are given and their potential is discussed. The use of CT phantoms is also demonstrated to assess accurately the proportion of bone marrow in the skeleton. Finally, the use of CT phantoms for Monte Carlo (MC) calculations of doses resulting from various photon exposures in radiology and radiation protection is discussed.Dedicated to Prof. W. Jacobi on the occasion of his 60th birthday |
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