Effect of gadolinium oxysulfide filter disks in panoramic radiography
Thesis/Dissertation
·
OSTI ID:6567637
This study was designed to measure the absorbed radiation dose at fifteen sites in the head and neck of a tissue-equivalent phantom with primary interest in the dose delivered to the bone marrow, ocular lens, and the thyroid gland. The objectives were to quantify the dose reduction potential of gadolinium oxysulfide filtration in rare-earth imaging compared to the more conventional calcium tungstate imaging compared to the more conventional calcium tungstate imaging system, and to reduce patient exposure while still maintaining an acceptable degree of radiographic image quality. The biologic risk to man in terms of doubling dose for the induction of leukemia was also estimated.
- Research Organization:
- Saint Louis Univ., MO (USA)
- OSTI ID:
- 6567637
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560151 -- Radiation Effects on Animals-- Man
61 RADIATION PROTECTION AND DOSIMETRY
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
655003* -- Medical Physics-- Dosimetry
BODY
BODY AREAS
CHALCOGENIDES
CONTROL
DISEASES
DOSES
EVALUATION
FILTERS
GADOLINIUM COMPOUNDS
GADOLINIUM SULFIDES
HEAD
HEMIC DISEASES
LEUKEMIA
MATERIALS
MOCKUP
NECK
NEOPLASMS
PHANTOMS
QUALITY CONTROL
RADIATION DOSES
RADIOINDUCTION
RARE EARTH COMPOUNDS
RISK ASSESSMENT
STRUCTURAL MODELS
SULFIDES
SULFUR COMPOUNDS
TISSUE-EQUIVALENT MATERIALS
61 RADIATION PROTECTION AND DOSIMETRY
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
655003* -- Medical Physics-- Dosimetry
BODY
BODY AREAS
CHALCOGENIDES
CONTROL
DISEASES
DOSES
EVALUATION
FILTERS
GADOLINIUM COMPOUNDS
GADOLINIUM SULFIDES
HEAD
HEMIC DISEASES
LEUKEMIA
MATERIALS
MOCKUP
NECK
NEOPLASMS
PHANTOMS
QUALITY CONTROL
RADIATION DOSES
RADIOINDUCTION
RARE EARTH COMPOUNDS
RISK ASSESSMENT
STRUCTURAL MODELS
SULFIDES
SULFUR COMPOUNDS
TISSUE-EQUIVALENT MATERIALS