Diagnostic imaging data

Identifies diagnostic imaging data references in healthcare and patient records. Protected health information under applicable data protection regulations.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: identifier/document-structure anchored regex with constrained context replaces phrase-only detection.
Detection quality: Mixed
Jurisdictions: au
Regulations: HRIPA (Cth), IPA 2009 (Qld), My Health Records Act 2012 (Cth), NDB Scheme (Cth), Privacy Act 1988 (Cth)
Frameworks: ISO 27001, ISO 27701, SOC 2
Data categories: healthcare, phi
Scope: wide
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?is)\b(?:diagnostic\s+imaging|medical\s+imaging|CT\s+scan|imaging\s+data|imaging\s+report)\b

Corroborative evidence keywords

diagnostic imaging data, diagnostic, imaging, data, health, biomedical, information, My Health Record, pathology result, diagnostic imaging, discharge summary, prescription record, immunisation history, immunization history, organ donor, clinical trial, medical history, allergy, blood test, X-ray (+4 more)

Proximity: 300 characters

Should match

diagnostic imaging — Primary topic phrase match
medical imaging — Case-insensitive topic phrase match
CT scan — Alternative topic phrase match
imaging data — Additional topic phrase match

Should not match

unrelated generic text without domain phrases — No relevant topic phrases present
placeholder value 12345 — Random text should not match topic-specific regex
patient biometric — Generic word pair from old broad template should not match

Known false positives

Medical terminology in health education materials, research publications, clinical guidelines, or public health documents without patient-specific data. Mitigation: Require corroborative evidence keywords confirming patient context. Look for co-occurrence with patient identifiers such as medical record numbers or dates of birth.
General wellness and fitness content using medical vocabulary without constituting protected health information. Mitigation: Layer with patient identifier patterns or healthcare-specific document structure detection to distinguish clinical records from general health content.

References

https://www.legislation.gov.au/C2012A00063/latest/text
https://www.safetyandquality.gov.au/standards/nsqhs-standards