Invalidity of SUV Measurements of Lesions in Close Proximity to Hot Sources due to “Shine-Through” Effect on FDG PET-CT Interpretation

<table>Transaxial FDG PET-CT images of the chest show physiologic myocardial uptake with <svg height="15.65" id="M12" style="vertical-align:-3.3907pt" version="1.1" viewbox="0 0 57.512501 15.65" width="57.512501" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> 7.0 (arrow A) and no visible uptake in a 2.0 cm lingular nodule of the left lung (arrow B). However, measured <svg height="15.65" id="M13" style="vertical-align:-3.3907pt" version="1.1" viewbox="0 0 57.512501 15.65" width="57.512501" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,0,0,-.012,32.275,15.45)"><path d="M797 0h-214v26q46 5 58 17.5t12 63.5v167q0 116 -88 116q-48 0 -112 -52q3 -18 3 -42v-195q0 -46 11 -58t53 -17v-26h-214v26q48 5 59.5 17t11.5 60v172q0 115 -88 115q-47 0 -109 -52v-235q0 -47 10 -59.5t48 -17.5v-26h-211v26q50 5 62.5 17t12.5 60v207q0 48 -9 59.5
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</svg> of the nodule is 5.6.</table>

Radiology Research and Practice

fig1

Figure 1

Figure 1: Invalidity of SUV Measurements of Lesions in Close Proximity to Hot Sources due to “Shine-Through” Effect on FDG PET-CT Interpretation 