Accompanying CD-ROM ... "contains the Precision Calculator Companion for automatically calculating the short-term precision and least significant change values for a facility, and the statistical confidence level for any change in BMD, all of which are indispensable in the interpretation of serial bone density studies. In addition, a new continuing education test will allow, upon successful completion, 15 hours of Category A American Society of Radiologic Technologists' credit."--P. [4] of cover.