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In this study a parallel groups design was used, with respondents randomly allocated to either the mobile (n = 100) or paper (n = 100) completion arm.
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Participants randomised to the self-completion arm were handed the final tool (see above) and asked to complete it.
For those randomised to the researcher-completion arm, the researcher sat with the participant in a quiet place and went through the tool with them, reading out the questions and entering their answers.
This design ensures the standardisation of time since treatment completion across arms.
(ODS 10 kb) Additional file 5: MLAA-based arm completion for different acquisition durations.
This demonstrates at least one causative role of insufficient arm completion in the MLAA attenuation maps in the emergence of halo artefacts.
This effect is most probably caused by the insufficient arm completion and the resulting emergence of halo artefacts, overcompensating the effect of increasing image noise.
In order to further investigate the role of MLAA arm completion, we investigated differences in the resulting attenuation map when varying the duration of data acquisition.
Reduction of acquisition time showed a significant impact on arm completion in the MLAA-based attenuation map (Fig. 7 and Additional file 5).
The pelvic bed positions were analysed to assess the influence of decreasing emission data statistics on MLAA-based arm completion in the computed attenuation maps.
The datasets supporting the conclusions of this article (Open Office spreadsheets of the evaluations concerning halo artefacts, lesion detectability, SUVmax, and arm completion values) are included within the additional supplementary files.
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