Additional investigations.

<p>Additional investigations.</p

Example head/neck area.

<p>Significant false-positive finding on PET/CT in the head/neck area. Intense FDG uptake in a lymph node (red arrow), revealing inflammation in a patient who eventually did not have lung cancer. Bowel-hotspots were ignored (blue arrows). Left: maximum intensity projection of PET. Right: Corresponding transverse slices of PET (top), PET/CT (middle), and CT (bottom).</p

FDG PET-findings summarised by scan area.

<p>FDG PET-findings summarised by scan area.</p

Example abdominal/pelvic area.

<p>True-positive but no-impact findings on PET/CT in the lower abdominal and pelvic area. Multiple skeletal metastases were detected (blue arrows), but these had no impact on staging as the thoracic field of view already showed multiple distant metastases (skeletal, adrenal glands, liver). An intense bowel hotspot (red arrow) is probably a colon carcinoma or large dysplastic polyp, but this was ignored as the prognosis of this patient was determined by the lung cancer. Imaging of the lower abdomen and pelvic area did not change the stage or therapy for this patient. Left: Coronal maximum intensity projection of PET. Right: Corresponding transverse slices of PET (top), PET/CT (middle), and CT (bottom).</p

Scan regions.

<p>The regions evaluated in this study. The head and neck area (HN): all above the shoulder line. The lower abdominal and pelvic area (LAP): all below the caudal tip of the right liver lobe. The region between HN and LAP (chest and upper abdomen, thoracic range) is the region of interest for imaging of (suspected) lung cancer.</p