TABLE 2

DRs for Patient-Based Analysis

Timing123I-MIBG SPECT/CT18F-DOPA PET/CTP*
Before induction chemotherapy
 Primary tumors15 (83%)17 (94%)0.5
 Soft-tissue metastases6 (50%)11 (92%)0.06
 Bone or bone-marrow metastases12 (92%)13 (100%)1.0
After induction chemotherapy
 Primary tumor13 (72%)15 (83%)0.6
 Soft-tissue metastases4 (33%)9 (75%)0.06
 Bone or bone-marrow metastases5 (38%)7 (54%)1.0
  • * Exact McNemar significance probability.

  • DRs (%) were calculated for each single diagnostic modality at each site of disease. Denominator for DRs on primary tumors is total number of patients (n = 18), considering that all are subjects with established cancer. For evaluations on soft-tissue and bone or bone-marrow lesions, denominator is maximum number of patients found to be positive by 2 diagnostic modalities (n = 12 for soft tissue; n = 13 for bone or bone-marrow lesions).