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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Helical (spiral) scanning<br />
• Continuous gantry rotation + continuous table feed<br />
• Scan data traces a helical path - or ‘spiral’ - around<br />
patient<br />
– data used to form axial images<br />
Detector array<br />
x-axis<br />
Sub-mm detectors<br />
Full extent <strong>of</strong> detector matrix<br />
z-axis<br />
xy plane<br />
Harefield <strong>Cardiac</strong> Course<br />
z