Abstract:
:Rare earth intensifying screen material (Gd2O2S:Tb) was added to the standard Al filtration of an oral panoramic x-ray unit, resulting in a beam capable of achieving reductions in patient dose without a loss of image quality. The added rare earth filtration technique resulted in patient dose reductions of 21-56%, depending on anatomic sites, when compared to the conventional Al filtration technique. Films generated from both techniques were measured densitometrically and evaluated by a panel of practicing clinicians. Diagnostically significant differences were minimal. The results indicate that use of rare earth filters in oral panoramic radiography is an effective means of reducing exposures of dental patients to ionizing radiation.
journal_name
Health Physjournal_title
Health physicsauthors
Tyndall DA,Washburn DBdoi
10.1097/00004032-198701000-00001subject
Has Abstractpub_date
1987-01-01 00:00:00pages
17-26issue
1eissn
0017-9078issn
1538-5159journal_volume
52pub_type
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