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Table 2 Reply alternatives for the question “What basis of prescription do you typically use?” Therapy types are denoted A–R, as listed in Table 1. Alternatives denoted “All” implies that all therapies (A–R) included this option

From: Variations in the practice of molecular radiotherapy and implementation of dosimetry: results from a European survey

No. Included in questions Prescription basis
1 All Fixed activity
2 All Fixed activity adjusted based on diagnosis, stage, or other clinical factors
3 A–J, M–R Fixed activity calculated per body surface area or patient weight
4 A–J, N–R Individually calculated activity to give a prescribed absorbed dose to whole body
5 A–J, N–R Individually calculated activity to give a prescribed absorbed dose to organ at risk
6 A–J, M–R Individually calculated activity to give a prescribed absorbed dose to target tissue
7 Q, R Stepwise escalation of activity based on patient response
8 K, L Body-Surface-Area (BSA) method with reductions
9 K, L Individually calculated activity based on prescribed absorbed dose to the target volume (lobe or segment) to be treated
10 K, L Individually calculated activity based on 99mTc MAA SPECT to give a prescribed absorbed dose to non-tumoral liver tissue
11 K, L Individually calculated activity based on 99mTc MAA SPECT to give a prescribed absorbed dose to tumor
12 All Other prescription