What type of equipment is commonly used in Quantitative Computed Tomography (QCT)?

• A. Standard fluoroscopy systems
• B. Dedicated computer tomography scanners
• C. Handheld ultrasound devices
• D. Magnetic resonance imaging machines

Answer: (B)

Quantitative Computed Tomography (QCT) specifically utilizes dedicated computed tomography scanners to assess bone mineral density. This method provides cross-sectional images of the bone, allowing for precise measurement of bone quantity and quality. The specialized nature of these scanners enables them to target and evaluate specific areas of interest, which is crucial for accurate bone assessments.

In contrast, standard fluoroscopy systems are primarily designed for real-time imaging and do not provide the appropriate capabilities for quantitative assessments of bone density. Handheld ultrasound devices, while useful for some musculoskeletal measurements, lack the precision and detailed imaging necessary for accurate QCT evaluations. Magnetic resonance imaging machines, although valuable for soft tissue imaging and other purposes, are not typically used for the quantitative assessment of bone density in the same way that dedicated CT scanners are. Thus, their functionalities do not align with the specific requirements of QCT.