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. 2019 May;60(5):608–614. doi: 10.2967/jnumed.118.209544

TABLE 2.

Patient Characteristics

Characteristic Same site/scanner (n = 10) Same institution, different scanner (n = 2) Different site/scanner (n = 11) All patients (n = 23)
Age (y) 53.5 (32–67) 58 (45–71) 66 (43–76) 60 (32–76)
Body mass index at scan 1 (kg/m2) 28.3 (18.3–37.6) 38.6 (31.4–45.7) 28.4 (22.5–43.2) 28.4 (18.3–45.7)
Time between scans (d) 8 (2–15) 7 (1–13) 10 (7–14) 9 (1–15)
Lesions* (n) 5 (1–9) 17 (9–25) 5 (1–17) 5 (1–25)
Sex (n)
 Male 3 3 (13%)
 Female 10 2 8 20 (87%)
Diagnosis (n)
 Breast cancer 10 2 6 18 (78%)
 Other 5 5 (22%)
Ongoing treatment between scans (n)
 None 2 5 7 (30%)
 Bisphosphonates or biologic only 1 1 1 3 (13%)
 Endocrine therapy 4 3 7 (30%)
 Chemotherapy§ 3 1 2 6 (26%)
PET/CT scanner (n)
 Discovery STE (both) 10 2 12 (52%)
 Ingenuity TF 6 6 (26%)
 Biograph 6 3 3 (13%)
 Biograph 20 mCT 2 2 (9%)
*

All identified, but ≤25 lesions/patient used in analysis.

1 each: colorectal, head/neck, stage IV lung, stage III melanoma, neuroendocrine/Merkel cell cancer.

2 also bisphosphonates; 3 also biologic.

§

4 also biologic; 1 also endocrine. Biologics: erlotinib, trastuzumab, everolimus, pertuzumab, denosumab, ado-trastuzumab emtansine. Cytotoxic agents: capecitabine, cyclophosphamide, doxorubicin.

Continuous data are expressed as median and range.