1. Radiation dose:
||CBCT effective dose (µSv) ICRP 2007
|| Medical CT effective dose (µSv) ICRP 2007
*Average from 3 scanners (Somaton VolumeZoom 4, Somatom Sensation 16, and Philips Mx8000 IDT)
M Loubele et al. Comparison between effective radiation dose of CBCT and MSCT scanners for dentomaxillofacial applications. European Journal of Radiology 2009:71(3);461-8.
2. Image resolution: For hard tissues and teeth, CBCT offers higher resolution and image sharpness compared to medical CT (Multi-Slice CT or MSCT).
M. Loubele et al. A comparison of jaw dimensional and quality assessments of bone characteristics with Cone-Beam CT, Spiral Tomography, and Multi-Slice Spiral CT. Int. J. Oral Maxillofac Implants 2007:22:446-454.
3. Metal artifact reduction: CBCT offers better metal artifact reduction compared to medical CT. This is important because many patients have metallic crowns or restorations that cause streaking artifacts that may interfere with the visualization of the region of interest.
C von See et al. Forensic imaging of projectiles using cone-beam computed tomography. Forensic Science International 190 2009:38-41.
4. Soft tissue contrast: One of the limitations of CBCT is the poor soft tissue contrast compared to medical CT or Magnetic Resonance Imaging (MRI). While CBCT is appropriate to evaluate osteoarthritic changes of the temporomandibular joint (TMJ), it is not suited for evaluation of TMJ disc displacement. Similarly, tumors within the soft tissue cannot be adequately evaluated using CBCT.