TITLE:
Artefacts in cone beam CT
AUTHORS:
Prashant P. Jaju, Mayuri Jain, Ajita Singh, Akanksha Gupta
KEYWORDS:
CBCT; Artefacts; Metal Artefacts
JOURNAL NAME:
Open Journal of Stomatology,
Vol.3 No.5,
August
16,
2013
ABSTRACT:
Cone beam computed tomography (CBCT) is the modern
third dimension applied in the field of oral maxillofacial region. With lower
radiation dose compared to conventional CT, its applications in dentistry has
increased tremendously. Artefacts can seriously degrade the quality of computed
tomographic (CBCT) images, sometimes to the point of making them diagnostically
unusable. To optimize image quality, it is necessary to understand why
artifacts occur and how they can be prevented or suppressed. CT artifacts originate
from a range of sources; physical based, scanner based and patient based.
This article highlights the causes of artefacts on CBCT images and methods to
avoid them.