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
Answer
\( \text{Pixel size} = 1.6 \mathrm{~mm}/\mathrm{pixel} \)
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 ：\( \text{Pixel size} = 1.6 \mathrm{~mm}/\mathrm{pixel} \)
