Effect of rare earth filtration on patient exposure, dose reduction, and image quality in oral panoramic radiology

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Health Phys.; (United States)

DOI:https://doi.org/10.1097/00004032-198701000-00001· OSTI ID:6694644

Tyndall, D A; Washburn, D B

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.

• Research Organization: Univ. of North Carolina School of Dentistry, Chapel Hill
• OSTI ID: 6694644
• Journal Information: Health Phys.; (United States), Journal Name: Health Phys.; (United States) Vol. 1; ISSN HLTPA
• Country of Publication: United States
• Language: English

Related Subjects

560151* -- Radiation Effects on Animals-- Man
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
DENTISTRY
DOSES
EQUIPMENT
FILTERS
MEDICINE
PATIENTS
RADIATION DOSES
RADIATION PROTECTION
X-RAY EQUIPMENT