Reduction of absorbed doses in radiography of the facial skeleton
Radiation absorbed doses from radiography of the paranasal sinuses and the facial skeleton were measured with thermoluminescent dosimeters (TLD) on a phantom head using high-sensitivity screens in an Orbix stand. The entrance doses to the skin of the head ranged from 0.31 to 2.9 mGy per exposure. The absorbed dose from a full series of sinus exposures averaged 0.33 mGy for the oral mucous membrane, 0.33 mGy for the maxillary sinus mucous membrane, 0.11 mGy for the parotid gland, 0.15 mGy for the submandibular gland, 0.61 mGy for the eye lens, and 0.75 mGy for the thyroid gland region. A leaded soft collar adapted to the thyroid region reduced the thyroid doses by more than one order of magnitude, but also reduced the image field. The mean energy imparted from a full series of paranasal sinus projections was 4.8 mJ and from a total series of the facial skeleton, 7.9 mJ.
- Research Organization:
- Karolinska Inst., Huddinge, Sweden
- OSTI ID:
- 6135658
- Journal Information:
- AJR, Am. J. Roentgenol.; (United States), Vol. 143:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
62 RADIOLOGY AND NUCLEAR MEDICINE
EYES
RADIATION DOSES
FACE
BIOMEDICAL RADIOGRAPHY
HEAD
MUCOUS MEMBRANES
SALIVARY GLANDS
SINUSES
THYROID
BIOLOGICAL SHIELDS
PHANTOMS
SKELETON
SKIN
THERMOLUMINESCENT DOSIMETRY
BODY
BODY AREAS
DIAGNOSTIC TECHNIQUES
DOSES
DOSIMETRY
ENDOCRINE GLANDS
GLANDS
MEDICINE
MEMBRANES
MOCKUP
NUCLEAR MEDICINE
ORGANS
RADIOLOGY
SENSE ORGANS
SHIELDS
STRUCTURAL MODELS
560151* - Radiation Effects on Animals- Man
550602 - Medicine- External Radiation in Diagnostics- (1980-)