PubMed · 11639092
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O Ewert. 1998. [Not Available].. https://pubmed.ncbi.nlm.nih.gov/11639092/
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This review provides a discussion of the 14 videotape reviews that have appeared in the International Journal of Group Psychotherapy from 1996 through 2000. This retrospective analysis describes the recommendations made by the review authors concerning ways in which future video products may be enhanced to improve their instructional value. These recommendations include topics that might be given greater emphasis in future efforts as well as elements within the format of such tapes that aid learning and discussion.
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Beams of X-rays and electrons used in external beam radiotherapy are characterized by differences in penetration, build-up, divergence, scatter etc. This short communication describes a very simple phosphor-loaded box that can be used to demonstrate directly to students the different properties of beams and the effect of field modifiers such as wedge filters, lead shields etc.