What type of detector system does the fan beam scanner employ?

• A. Analog detector
• B. Solid state multi-element array
• C. Pencil detector
• D. Single element detector

Answer: (B)

The fan beam scanner employs a solid-state multi-element array as its detector system due to its ability to efficiently collect data over a larger area with high sensitivity and resolution. This type of detector consists of multiple individual detectors arranged in an array format, allowing for simultaneous measurement of bone density at various points.

This is particularly advantageous in bone densitometry, as it enables faster scanning times and the ability to capture more comprehensive data in one pass compared to systems using single element or pencil detectors. This multi-element configuration enhances the system's performance and accuracy, making it well-suited for detecting variations in bone mineral density across different anatomical sites.

The design of the solid-state multi-element array also contributes to the overall efficiency and reliability of the fan beam scanner, facilitating more detailed evaluations of bone health.