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NEMA Standard on CT Scanners Modifies Dose Alert Features

03/7/2019 10:00AMSign-up to receive press releases.

ROSSLYN, Va.—The National Electrical Manufacturers Association (NEMA) published NEMA XR 25-2019 Computed Tomography Dose Check. This revised Standard specifies an equipment feature for CT scanners to produce dose-related notification and alert messages to inform operators prior to scanning if the estimated dose would exceed the preset levels.

"This revision of XR 25 adds a modification to the 'dose alert' feature, permitting it to trigger only once for protocols deemed interventional by the user or manufacturer," said Kirsten Boedeker, CT Workgroup Co-Chair, Senior Manager of Medical Physics at Canon Medical Systems Corporation. "This Standard provides clear pathways for manufacturers to start implementing this modification."

NEMA XR 25-2019 is available in hard copy for $69 and as an electronic download at no cost on the NEMA website.


The National Electrical Manufacturers Association (NEMA) represents nearly 325 electrical equipment and medical imaging manufacturers that make safe, reliable, and efficient products and systems. Our combined industries account for 370,000 American jobs in more than 6,100 facilities covering every state. These industries produce $124 billion in shipments and $42 billion in exports of electrical equipment and medical imaging technologies per year.

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