A DXA scanner equipped with a single detector and a pinhole collimator is classified as which type?

A DXA scanner equipped with a single detector and a pinhole collimator is classified as which type?

• A. Fan beam scanner
• B. Pencil beam scanner
• C. Array beam scanner
• D. Digital beam scanner

Answer: (B)

A DXA scanner equipped with a single detector and a pinhole collimator is classified as a pencil beam scanner. This type of scanner utilizes a narrow beam of X-rays that is focused into a pencil-like shape, which is then directed towards the bone being measured. The use of a single detector allows for precise measurement as the scanner moves across the area of interest. The pencil beam allows for high resolution, particularly in smaller areas, because it provides a more focused and narrow beam of radiation. The pinhole collimator further enhances this precision by allowing only the X-rays from a specific angle to reach the detector, improving the quality of the density measurement. Understanding this classification is important for interpreting the results and ensuring accurate assessments of bone density, especially in clinical settings where precise measurements are crucial for diagnosing conditions like osteoporosis.

A DXA scanner equipped with a single detector and a pinhole collimator is classified as a pencil beam scanner. This type of scanner utilizes a narrow beam of X-rays that is focused into a pencil-like shape, which is then directed towards the bone being measured. The use of a single detector allows for precise measurement as the scanner moves across the area of interest.

The pencil beam allows for high resolution, particularly in smaller areas, because it provides a more focused and narrow beam of radiation. The pinhole collimator further enhances this precision by allowing only the X-rays from a specific angle to reach the detector, improving the quality of the density measurement.

Understanding this classification is important for interpreting the results and ensuring accurate assessments of bone density, especially in clinical settings where precise measurements are crucial for diagnosing conditions like osteoporosis.