Effect of Different Breast Densities and Average Glandular Dose on Contrast to Noise Ratios in Full-Field Digital Mammography: Simulation and Phantom Study

<table class="fixed-width table-group" id="tab2"><tr><td><table class="table"><colgroup><col style="width:12.59em"/><col style="width:5.40em"/><col style="width:2.10em"/><col style="width:7.34em"/><col style="width:4.15em"/><col style="width:4.65em"/></colgroup><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Variables</td><td class="align_center">Parameter</td><td class="align_center">df</td><td class="align_center">Sum of squares</td><td class="align_center">F value</td><td class="align_center">p</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Mammary gland tissue ratio</td><td class="align_center">2</td><td class="align_center">2</td><td class="align_center">26.3</td><td class="align_center">3.66</td><td class="align_center">0.0476</td></tr><tr><td class="align_left">AGD</td><td class="align_center">1</td><td class="align_center">1</td><td class="align_center">376.6</td><td class="align_center">105.06</td><td class="align_center">&lt; 0.0001</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><div>AGD: average glandular dose, CNR: contrast to noise ratio, and df: Degrees of Freedom.<br/></div></td></tr></table>

<div>Results of the multivariate analysis for effect of mammary gland density and AGD on CNR.</div>

Radiology Research and Practice

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Table 2

Table 2: Effect of Different Breast Densities and Average Glandular Dose on Contrast to Noise Ratios in Full-Field Digital Mammography: Simulation and Phantom Study 

Table 2 | Effect of Different Breast Densities and Average Glandular Dose on Contrast to Noise Ratios in Full-Field Digital Mammography: Simulation and Phantom Study 