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U.S. Department of Health and Human Services

Radiation-Emitting Products

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During clinical exams, how long must our mammography unit maintain the final compression force set by the radiologic technologist?

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The regulations do not specify a time frame in seconds or minutes. Instead, the minimum time frame is determined by the conditions at each facility. During clinical exams, the mammography unit must maintain the final compression force set by the radiologic technologist until the exposure is completed. If the radiologic technologist or interpreting physician notices that the compression force decreases significantly (such that the image quality is adversely affected) before the exposure is completed, the unit must be fixed, modified, or replaced.

Back to Application of Compression