Supplemental Methods and Supplemenal Figures 1 through 5 from [&lt;sup&gt;18&lt;/sup&gt;F](2&lt;i&gt;S&lt;/i&gt;,4&lt;i&gt;R&lt;/i&gt;)4-Fluoroglutamine PET Detects Glutamine Pool Size Changes in Triple-Negative Breast Cancer in Response to Glutaminase Inhibition