TABLE 1

Results of Quantification of Same PET Data Attenuation Corrected by HCT and ACT

ParameterData
Patient12345678
Tumor12345678910111213
Location*LRLRLHULULLLLRLRLRRHDERHUL
Size (cm)1.81.02.01.50.91.42.21.21.41.02.01.72.3
SUV (HCT)2.32.611.810.83.96.86.64.63.44.31.97.79.3
SUV (ACT)3.63.112.213.73.76.38.47.54.37.43.89.810.9
SUV difference (%)59.017.43.626.9−4.7−7.627.462.128.570.197.427.317.2
  • * LR = lower right; LH = left hilar; UL = upper left; LL = lower left; RH = right hilar; DE = distal esophagus.

  • Tumors 1, 8, 10, and 11 had SUV differences of more than 50%.