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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Data acquisition – how much data do you need?<br />
• Opposing projections provide the same information<br />
– To reconstruct images only 180° <strong>of</strong> scan data is required<br />
• Image time = rotation / 2<br />
0°<br />
attenuation<br />
300 ms rotation<br />
150 ms<br />
attenuation<br />
180°<br />
one z-axis position<br />
Harefield <strong>Cardiac</strong> Course