How many decimal places does the areal measurement contain?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: (B)

In bone densitometry, the areal measurement typically refers to the results provided in grams per square centimeter (g/cm²), which is the standard unit of measurement for bone mineral density (BMD). The results are expressed with two decimal places to ensure an adequate level of precision for clinical interpretation and assessment of bone health. This standardization allows healthcare providers to detect changes in bone density over time, aiding in the diagnosis and monitoring of conditions such as osteoporosis.

The choice of two decimal places strikes a balance between sufficient accuracy for clinical decision-making and practical reporting efficiency. Presenting more than two decimal places could lead to confusion without a significant increase in clinical value, while fewer than two may not provide enough detail for proper assessment.

Therefore, the correct answer is that the areal measurement contains two decimal places, reflecting the established convention in the field.