Question

If a reconstruction FOV of 32 cm and a 512x512 matrix are used, the pixel size is ________mm.

A. 0.125
B. 0.25
C. 0.5
D. 1.0

Answer 1

Main answer:

The pixel size is calculated as 0.625 mm using the formula FOV/matrix size, ensuring precise medical image resolution.The pixel size is 0.625 mm.

Step-by-step explanation:

In medical imaging, the pixel size can be determined using the formula:
`\[ \text{Pixel Size} = \frac{\text{Field of View (FOV)}}{\text{Matrix Size}}`\]Given that the reconstruction FOV is 32 cm and the matrix size is 512x512, we can substitute these values into the formula
`:\[ \text{Pixel Size} = \frac{32 \, \text{cm}}{512} \]`

Solving this equation yields a pixel size of 0.625 mm. This result represents the dimensions of each pixel in the reconstructed image.Understanding pixel size is crucial in medical imaging as it directly influences the resolution of the image. A smaller pixel size corresponds to higher resolution, enabling the detection of smaller structures or abnormalities in the scanned area. Conversely, a larger pixel size may result in a lower resolution image with less detailed information.

In the context of this question, the correct answer is 0.625 mm, which aligns with the calculation based on the provided FOV and matrix size. It's essential for professionals in the field to grasp these concepts to optimize image quality and diagnostic accuracy.