New material offers better alternative to lead in healthcare applications

Medical equipment and devices that produce x-rays and gamma rays must be shielded to protect operators, clinicians, patients and sensitive electronic components from tube leakage and room scatter. The European Union's Restriction of Hazardous Substances (RoHS) directive calls for the near-elimination of lead in most electrical and electronic equipment. In addition, lead has design drawbacks. Lead-encapsulated glass plates for protection against x-rays must be very thick, limiting usage and design options. Further, lead shielding can have “hot spots” – areas where x-rays can penetrate. Due to increasing regulation of lead for toxicity and environmental risks, manufacturers are seeking new replacement materials.

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