Every viral tracing or optogenetics experiment needs to verify that the injection hit the intended target and characterize its spread. Injection site mapping:
- Confirms the injection center is within the target structure
- Quantifies spread into neighboring regions (potential off-target effects)
- Enables exclusion of animals with mistargeted injections
- Correlates injection volume with downstream labeling efficiency
With PanoBrain's atlas registration, the injection site boundary is automatically mapped to anatomical regions, replacing subjective manual assessment.