The Quality Standard for Imaging (QSI)

  • QSI stage 0 Start the conversation: You want to find out more about the QSI process. Services can informally start working on the QSI.
  • QSI stage 1 Start the process: You apply for a business case for QSI staff and, if possible, accreditation costs.
  • QSI stage 2 Gap analysis and dedicated staff. You are working through the initial stages of a gap analysis.
  • QSI stage 3 Gap analysis and dedicated staff: You are working through the initial stages of a gap analysis.
  • QSI stage 4 Apply for accreditation: You apply for accreditation with UKAS or have a rolling QSI quality programme.
  • QSI stage 5 Accreditation and continuous quality improvement: You have been successfully accredited and have adopted a continuous cycle of quality improvement.

Supporting and enabling quality improvement in imaging services.

The QSI sets national quality criteria for imaging services. Services should assess their performance against this standard and continually make improvements. The QSI is a collaboration between The Royal College of Radiologists (RCR) and the College of Radiographers (CoR).

Download the standard (PDF)

The QSI:

  • Supports clinicians in improving the quality of care. It sets a minimum level of expectation rather than a ceiling of quality
  • Stands alone. Services can use it as part of their own internal improvement assessment.

The standard applies to all four UK countries. This includes NHS, commercial and not-for-profit imaging services in any of those countries. Services meeting the standard are independently accredited by the United Kingdom Accreditation Service (UKAS).

The Quality Standard for Imaging 2021

The QSI 2021 has undergone a rigorous development and review process and represents the judgements of panels of lay representatives, radiographers, radiologists, medical physicists and sonographers who have overseen its creation and revision. It reflects wide consultation and valuable comments and suggestions received from professional colleagues and relevant UK government agencies, professional and regulatory bodies. The QSI has been assessed for country-specific applicability.

The QSI aims to improve the quality of care for people attending an imaging service. It sets out best practice to improve patient care and outcomes. Clinical practice is a continually evolving field, and the QSI will be independently reviewed every four years. 

Find out more about the benefits of the QSI, the QSI process and how to access support from the colleges.

Contact our Quality Improvement Partners

We welcome your feedback on the new standards. Please send your questions or comments to

The Quality Standard for Imaging process

The stages towards QSI accreditation

Benefits of the Quality Standard for Imaging

What QSI 2021 means for radiology departments and imaging services

Support for the Quality Standard for Imaging

Supporting tools, templates and networks for the QSI

QSI days

23 March and 8 June 2022