[MRI artifacts caused by keepers in a dental arch].
OBJECTIVE
This research was designed to observe the degree of artifacts caused by 1-4 keepers.


METHODS
Samples were imaged in a living human subject by 0.15 Tesla MR devices in sagital plane. Results were analyzed and the maximal diameters of artifacts were measured.


RESULTS
The maximal diameters of the artifacts caused by 1-4 keepers were 101-109.6mm.


CONCLUSIONS
Even with four keepers in the dental arch, the degree of artifact is still limited.
Wei
B
B
Department of Prosthodontics, Ninth People's Hospital, School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China.
Zhang
F Q
FQ
Yu
Q
Q