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Scatter Sentry™ Our Lead-Free Bi-layer Product

Scatter Sentry


Ready for a lightweight apron with high-performance radiation protection? It’s here: Scatter Sentry™, our bi-layer product—the newest material exclusively from Bar-Ray Products.

More comfort. Better protection. What’s not to like?

The Latest in Innovative Protection

We’ve always been committed to combining maximum radiation protection with minimum weight material, and we keep our product developers busy seeking ever-better materials and solutions.

This latest innovation, Scatter Sentry™, our bi-layer product, joins Bar-Ray’s collection of radiation protection options—Prestige, Starlite, Truelite, and Cost Cruncher—to provide our newest shielding material yet. There’s plenty to love about Scatter Sentry™:

  • Meets current ASTM, IEC and DIN guidelines.
  • IEC 61331-1 (2014) compliant. IEC compliant aprons are somewhat heavier than equivalent non-compliant aprons. To be truly compliant, manufacturers must follow IEC apron protection coverage and size criteria.
  • Scatter Sentry™ is a recyclable product.
Larger Bodies, Increased Scatter Radiation
  • Fluoroscopy’s radiation hazard comes mainly from X-rays scattered from the patient’s body.
  • Scatter intensity varies substantially with the thickness of the anatomic parts being examined.
  • Heavier patients have thicker bodies, which produce more scatter radiation.
Scatter Sentry™ Bi-Layer Protection and Comfort
  • Provides optimal protection from scatter radiation for fluoroscopy imaging professionals.
  • Bi-layer material is lightweight and flexible.
  • Created using a new, more realistic measure of radiation protection.
  • Developed with new testing methods from ASTM International, the International Electrotechnical Commission, and the National Research Council of Canada.
Why Use Scatter Sentry™ Radiation Protection Aprons?
  • New testing methods are being adopted to take into account the different characteristics of no lead or low lead shielding materials.
  • Traditionally, shielding materials were tested for lead equivalence using a narrow beam attenuation set-up; ASTM F2547-06 (2013) or IEC 61331-1:1994
  • The use of no lead or low lead shielding materials has caused two testing complications:

1. Different elements attenuate X-rays better at certain energies; this means the lead equivalence of no lead or low lead will vary depending on the energies used in the test.

2. Traditional narrow beam attenuation testing may not accurately measure the protection of no lead or low lead shielding materials.

  • The new testing method incorporates an inverse broad beam attenuation set-up; ASTM F3094(2014) or IEC 61331-1:2014
  • Scatter Sentry™, our bi-layer product, conforms to the new IEC61331-1:2014 standards for customers who would like to adhere to these newer testing methods.
Scatter Sentry™, Our Bi-Layer Product Protection Ratings & Lead Equivalencies
  Level I Level II
  Apron Front Apron Back Apron Front

 Nominal Lead Thickness (mm Pb Equivalent)*

0.35 0.25 0.50
 80 kV Scatter Protection Rating  97%  92%  99%
 Pure Lead Protection Rating  97%  94%  99%
 100 kV Scatter Protection Rating  94% 88%  97%
 Pure Lead Protection Rating  93%  89%  97%
 130 kV Scatter Transmission 90%  83%  95%
Pure Lead Protection Rating  90%  84%  95%
*Note: Lead equivalence of Scatter Sentry™ is rated for 100 kV Scatter according to ASTM F3094:2014.