How many decimal places does BMD typically have?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: (C)

In bone densitometry, bone mineral density (BMD) values are typically expressed with two decimal places. This level of precision is sufficient to convey meaningful differences in bone density measurements, which is crucial for diagnosing conditions such as osteoporosis or assessing fracture risk. The precision of two decimal places allows healthcare professionals to monitor changes over time in a patient's bone density and make informed decisions regarding treatment options.

Though some practices may vary slightly, especially in specific research settings or certain imaging modalities, the standard reporting for clinical purposes is generally set at two decimal places to ensure clarity and consistency in communication regarding patient care.