When finalized, this draft guidance document will provide detailed recommendations for manufacturers about the information that should be included in premarket submissions (i.e., premarket approval (PMA) applications, humanitarian device exemption (HDE) applications, premarket notification (510(k)) submissions, investigational device exemption (IDE) applications and De Novo requests) for devices that include quantitative imaging functions.  In general, manufacturers preparing premarket submissions for devices that include quantitative imaging functions should provide performance specifications for the quantitative imaging functions, supporting performance data to demonstrate that the quantitative imaging functions meet those performance specifications, and sufficient information for the end user to obtain, understand and interpret the values provided by the quantitative imaging functions.