AWS DICOMWeb StudyDate/Time range search does not seem to work.

Based on the information provided, it appears you're encountering limitations with the DICOMweb QIDO-RS range queries in AWS HealthImaging.

While AWS HealthImaging does support range queries for DICOM data, the documentation doesn't specifically indicate that time range queries using StudyTime are supported in the DICOMweb interface. The examples shown for range queries only demonstrate date ranges (e.g., StudyDate=AABBYYYY-BBCCYYYY).

For time-based range searches, AWS HealthImaging provides an alternative approach using the native SearchImageSets API with the BETWEEN operator. This API allows you to search for image sets within specific date and time ranges using the DICOMStudyDateAndTime structure.

For example, you can search for image sets with DICOM Studies generated between specific dates and times by using the AWS CLI:

aws medical-imaging search-image-sets \
--datastore-id 12345678901234567890123456789012 \
--search-criteria file://search-criteria.json

Where search-criteria.json contains:

{
"filters": [{
"values": [{
"DICOMStudyDateAndTime": {
"DICOMStudyDate": "20250815",
"DICOMStudyTime": "072500"
}
},
{
"DICOMStudyDateAndTime": {
"DICOMStudyDate": "20250815",
"DICOMStudyTime": "073000"
}
}],
"operator": "BETWEEN"
}]
}

This approach should allow you to search within the 30-minute window you're looking for. Note that the DICOMStudyTime is optional in this structure, but when provided, it allows for more precise time-based filtering.
Sources
Searching DICOM data in HealthImaging - AWS HealthImaging
Searching image sets - AWS HealthImaging
Use SearchImageSets with an AWS SDK or CLI - AWS HealthImaging
SearchByAttributeValue - AWS HealthImaging