Authors' Note: In measuring ionizing radiation such as gamma rays with an instrument such as a dosimeter, terms such as exposure-rate, flux, and fluence relate to the strength of the source. With regard to possible harm to humans and other biologic creatures, the absorbed dose is more important. The many different units involved in scientific descriptions may, in fact, detract from comprehension by non-experts. A simple rule of thumb, adopted by most professional societies, is to keep exposure "as low as reasonably achievable", as summarized in the acronymic slogan ALARA.
You can review all our verses on this intriguing topic by proceeding to a post on 'Edifying Nonsense' entitled 'Selected Topics in Diagnostic Imaging'. Click HERE!
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