1. Use Cases- access issues Level 1 Todd Perlstein at BWH wants to study the ultrasound data on all cases of X he has reviewed in the past 3 years. Hypothesis: N = Y scans Analysis uses clinically available tools

2. Use Cases- access issues Level 2 Todd Perlstein at BWH wants to study the ultrasound data on all cases of X he has reviewed in the past 3 years. Hypothesis: N = Y scans Analysis uses research tools not available within local clinical environment, must download DICOM files

3. Use Cases- access issues Level 3 Todd Perlstein at BWH wants to study the ultrasound data on all cases of X done at his own institution in past 3 years. Hypothesis: N = Y scans Analysis uses clinically available tools

4. Use Cases- access issues Level 4 Todd Perlstein at BWH wants to study the ultrasound data on all cases of X done at his own institution in past 3 years. Hypothesis: N = Y scans Analysis uses research tools not available within local clinical environment, must download DICOM files

5. Use Cases- access issues Level 5 Todd Perlstein at BWH and collaborator at CHB want to study the ultrasound data on all cases of X done at their own institutions in past 3 years. Hypothesis: N = Y scans Analysis uses clinically available tools

6. Use Cases- access issues Level 6 Todd Perlstein at BWH and collaborator at CHB want to study the ultrasound data on all cases of X done at their own institutions in past 3 years. Hypothesis: N = Y scans Analysis uses research tools not available within local clinical environment, must download DICOM files

7. Use Cases- access issues Level 7 and on….. To be continued….