Table 2.

Comparison of different Imaging Modalities for CAC measurement.

Imaging Method	Characteristics	Limitations
Initial Scanning Techniques	Utilized chest X-rays, fluoroscopy, digital subtraction fluoroscopy [27]	Potential for predicting CAD and coronary events, low sensitivity (52%) [14]
Electron-Beam CT (EBCT)	Introduced cardiac gating; higher sensitivity (90%) for CAC detection, localization, and quantification [14]; adequate temporal resolution for a moving heart [2]; quicker imaging through electronic movement [20]	Not suitable for general CT imaging, replaced by MDCT for CAC [2]
Multidetector CT (MDCT)	Allows reconstruction of a complete image [17], higher mean Hounsfield units (compared to EBCT) [28], superior spatial resolution, cost-effective option [20]	More significant motion artifacts (compared to EBCT) [28]