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Technical Aspects of Cardiac CT - ImPACT CT Scanner Evaluation ...

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Multi-sector reconstruction - issues<br />

• Temporal resolution optimised only for specific heart rates<br />

• Worst case when heart rate in synchrony with tube rotation<br />

900 ms = 67 bpm<br />

300 ms rotation<br />

75 ms<br />

Time for 3 rotations<br />

same z-axis position<br />

Harefield <strong>Cardiac</strong> Course

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