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. 2012 Oct 12;13(6):776–783. doi: 10.3348/kjr.2012.13.6.776

Table 2.

Comparison of Mean Values and Visible Rated of Visible Objects between ACR Phantom and Digital Phantom

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Note.- Mean values are presented as mean ± standard deviation.

*Visible rate

Visible rates are calculated by the equation,

graphic file with name kjr-13-776-e002.jpg

The ACR has provided scoring criteria for the ACR Phantom and required minimum number of visualized fibers, specks, and masses to be 4, 3, and 3, respectively; however, there have been no scoring criteria for Digital Phantom.

ACR Phantom = American College of Radiology Mammography Accreditation Phantom, Digital Phantom = Digital Mammography Accreditation Phantom