Table 3. Determinants of temporal resolution in CCT and potential improvements.

Factor	Issue	Solution
Gantry rotation time	Mechanical limits; tube power/radiation dose	Shortest gantry rotation time 50–100 ms (above 25 ms of coronary angiography)
Novel scanner concepts	Cost; tube power/radiation dose	Dual source computed tomography
New software solutions	Arrhythmias; tube power/radiation dose	Multisegment reconstruction approaches Iterative reconstruction algorithms

CCT, cardiac computed tomography.