This is a very short chapter, but it is nevertheless one of the most important ones. Quality assurance is the process by which one assures oneself that what is done is that which was intended to be done. Quality assurance (QA) is the sine qua non of any practice, but especially one in which people’s lives and health are at stake.


Quality Assurance Input Signal Field Size Planning Program Safety System 
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© Springer Science+Business Media, LLC 2007

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