CAMRT Radiography Practice Exam

In bone mineral densitometry, what does a T-Score of -1 indicate?

1. Normal bone density

2. Osteopenia

3. Osteoporosis

4. Severe osteoporosis

The correct answer is: Normal bone density

A T-Score of -1 indicates normal bone density. In bone mineral densitometry, T-Scores are used to compare the bone density of an individual to the average peak bone density of a healthy young adult of the same sex. A score of 0 signifies average young adult bone density, while T-Scores ranging from -1 to +1 are considered normal. A T-Score between -1 and -2.5 typically suggests osteopenia, indicating lower than average bone density, while a score below -2.5 is associated with osteoporosis. Severe osteoporosis would be represented by even lower T-Scores, often below -2.5 with the presence of fragility fractures. Thus, a T-Score of -1 falls within the normal range, making it an important benchmark in assessing bone health.