Fixing split studies: How IMPAX derives attribute values

Automatically derived values from HIS verification

When repairing studies that have been split out of a study, IMPAX derives the following patient and study attributes automatically by performing fixup (HIS verification) using data available from the HIS or RIS:

• Patient ID, name, birth date, and sex

• Other patient IDs

• Current patient location

• Study instance UID

• Requested procedure ID and code

• Study description, date, and time

• Referring, requesting, and performing physician

• Requesting service

• Station name—When split, the station name is taken from the series. If the attribute is NULL, HIS verification provides it during fixup.

• Military rank and branch of service

• Study status ID

• Study comments

• Additional patient history—The original study takes what was in the field and the new study is NULL when first split and then is populated during fixup if the HIS has information.

• Reason for study

Calculated or automatically derived attribute values

The following attributes are calculated or are automatically derived:

• Patient age—Calculated if the study date changes.

• Study date and time—Copied from the study series.

• Specialty and body part—Determined based on study description, which may be updated during HIS verification.

• Station name—When split, the station name is taken from the series. If the attribute is NULL, HIS verification provides it during fixup.

• Modality—Calculated from the most common value in the series.