What WED means — and why it matters for accurate skin-dose verification.

Water-equivalent depth (WED) describes the depth in tissue that a dosimeter  reading represents. With a world leading WED of <0.15 mm (reproducible within 2%), MOSkin™ against the known standard 0.07mm MOSkin measures dose at a depth that clearly aligns with the sensitive layers of human skin — giving teams confidence in surface-level dose verification.

Why WED Matters

In radiation therapy, small shifts in surface dose can have meaningful implications for treatment planning, safety checks, and quality assurance. A minimal water equivalent depth provides clinical verification that surface dose satisfies the intended dose. Especially in treatment scenarios where surface-sparing or buildup effects are important.

MOSkin’s validated Water Equivalent Depth (WED) is intentionally matched to the internationally recognised reference depth for skin dose, providing data that is directly relevant to clinical evaluation.

For Administrators

A WED of <0.15 mm means MOSkin measures dose where skin-level verification matters most. This gives clinical teams a clearer picture of surface-dose accuracy and supports confident decision-making during treatment delivery.

Traditional in-vivo dosimetry systems often measure deeper in tissue, which can make surface-level readings less specific. MOSkin fills that gap with a measurement point designed for skin-dose relevance.

For Medical Physicists

MOSkin’s measurement depth is as close as practicable  to the basal layer of the epidermis, approximately 70 μm tissue depth which is widely used in skin-dose reference models.

Key Characteristics

  • WED <0.15 mm = 150μm depth
  • Closely matches established skin reference depth
  • Ideal for assessing dose in the buildup region
  • Radio-translucent substrate minimises beam perturbation
  • MOSFET architecture enables direct, real-time dose measurement
  • Tested & validated across 6–14 MV Linac photon beams

Where to Learn More

For full validation data, methodology, and accuracy specifications, refer to MOSkin’s peer-reviewed publications and technical datasheet.

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