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Table 2 Comparison between the planned therapeutic activity, the delivered therapeutic activity, the activity measured in the PET’s FOV, and the activity in the liver measured from PET

From: Analysis of differences between 99mTc-MAA SPECT- and 90Y-microsphere PET-based dosimetry for hepatocellular carcinoma selective internal radiation therapy

 

Mean ± SD

Absolute deviation

Relative deviation

Planned therapeutic activity (MBq)

3673 ± 1387

Delivered therapeutic activity (MBq)

3525 ± 1225

− 148 ± 491

− 3 ± 9%

Activity measured in the PET’s FOV (MBq)

3301 ± 1162

− 372 ± 534

− 9 ± 12%

Activity in the liver measured from PET (MBq)

2663 ± 1002

− 1010 ± 579

−  27 ± 10%

  1. SD standard deviation, FOV field of view. All activities are given at the same time of injection. Deviation is computed with respect to the activity planned to be delivered