EN 61262-6:1994

Overview

EN 61262-6:1994 (CLC) titled Medical electrical equipment - Characteristics of electro‑optical X‑ray image intensifiers - Part 6: Determination of the contrast ratio and veiling glare index applies to electro‑optical X‑ray image intensifiers used in medical diagnostic X‑ray equipment. The standard describes a method for determining two key image‑quality metrics: the contrast ratio (CR) and the veiling glare index (VGI). The published Slovenian adoption references IEC 1262-6:1994 and is intended for use in radiographic equipment evaluation and quality assessment.

Key topics

• Contrast ratio (CR) - measurement focus for the amplitude between bright and dark image regions produced by an image intensifier.
• Veiling glare index (VGI) - quantifies stray light or background illumination that reduces image contrast.
• Measurement method - standardized procedure for determining CR and VGI of electro‑optical X‑ray image intensifiers (as components of diagnostic X‑ray systems).
• Scope and applicability - applies specifically to image intensifiers for medical use within diagnostic radiography equipment.
• Terminology and scope alignment with the referenced IEC document (IEC 1262-6:1994).

Applications

• Acceptance testing and factory verification of electro‑optical X‑ray image intensifiers used in fluoroscopy and radiography.
• Image quality assurance (QA) programs in hospitals and diagnostic imaging facilities to ensure consistent contrast performance and minimal veiling glare.
• Procurement and specification drafting for medical device manufacturers and suppliers to verify that image intensifiers meet expected optical performance.
• Support for regulatory compliance, performance benchmarking, and comparative testing of intensifier models.

Who uses this standard

• Medical device manufacturers and R&D teams designing or manufacturing image intensifiers.
• Test laboratories and third‑party conformity assessment bodies performing standardized image‑quality measurements.
• Clinical engineers, radiology QA managers, and biomedical technicians responsible for equipment performance and acceptance testing.
• Procurement specialists and regulatory affairs professionals specifying performance criteria for diagnostic X‑ray systems.

Related standards

• EN/IEC series on electro‑optical X‑ray image intensifiers (other parts of EN/IEC 61262) and broader medical electrical equipment standards for diagnostic X‑ray systems may be consulted for complementary performance and safety criteria.

Keywords: EN 61262-6:1994, IEC 1262-6:1994, contrast ratio, veiling glare index, electro‑optical X‑ray image intensifiers, medical electrical equipment, diagnostic X‑ray, image intensifier testing, radiography QA.