Problem
Pixel size \( = \) FOV \( / \) Matrix size Example: Compute the pixel size for the characteristics of CT images: FOV \( 200 \mathrm{~cm}, 128 \times 128 \) matrix Pixel size \( =200 \mathrm{~mm} / 128 \) pixels \( =1.6 \mathrm{~mm} / \) pixel - In addition, in a real CT image, all tissues within a single pixel would be the same shade of gray - مجم البكسل = حجمFOV / الفصفوفة • مثال: احسب حجم البكسل لخصائص صور التصوير المقطعي المحوسبة FOV 200 - حجم البكسل = 200 ملم 128 بكسل = 1.6 ملم / بكسل بنفس درجة اللون الرمادي The measurements are reconstructed with the help of an algorithm and CT Image - An attenuation measurement quantifies the fraction of radiation the final image is displayed on a TV monitor. removed in passing through a given amount of a specific material of
Solution
Step 1 ：\( \text{Pixel size} = \frac{\text{FOV}}{\text{Matrix size}} \)
Step 2 ：\( \text{Pixel size} = \frac{200 \mathrm{~mm}}{128 \mathrm{~pixels}} \)
Step 3 ：\( \text{Pixel size} = 1.6 \mathrm{~mm}/\mathrm{pixel} \)
