Technical Aspects of Cardiac CT - ImPACT CT Scanner Evaluation ...
Technical Aspects of Cardiac CT - ImPACT CT Scanner Evaluation ...
Technical Aspects of Cardiac CT - ImPACT CT Scanner Evaluation ...
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<strong>CT</strong> Image<br />
• Pixel value (<strong>CT</strong> number)<br />
– Represents average attenuation <strong>of</strong> the 3-D volume element<br />
512<br />
pixels<br />
slice<br />
width<br />
voxel<br />
• Pixel size = fov / matrix<br />
– eg 350 / 512 = 0.68 mm, If 1024 matrix = 0.34 mm<br />
Harefield <strong>Cardiac</strong> Course