Exposure distribution, absorbed doses, and energy imparted for panoramic radiography using Orthopantomograph model OP 5

Journal Article · Fri Feb 01 04:00:00 EST 1985 · Oral Surg., Oral Med., Oral Pathol.; (United States)

DOI:https://doi.org/10.1016/0030-4220(85)90021-0· OSTI ID:5511509

Nilsson, L; Rohlin, M; Thapper, K

The absorbed doses and energy imparted for the Orthopantomograph model OP 5 using two different collimators (0.9-1.3 X 33 mm2 and 0.6-0.9 X 39.5 mm2, respectively) were examined at 70 and 75 kV. The absorbed doses were estimated by thermoluminescence dosimetry in a sectioned phantom and by the energy imparted from measurements of areal exposure using a plane parallel transmission ionization chamber. The exposure distribution was surveyed on radiographic film. The anterior part of the parotid glands received the highest absorbed doses (2.4-3.2 mGy) when the wider collimator was used, with a decrease of two to three times when the narrower collimator was used. Other areas received absorbed doses of about 1.0 to 1.5 mGy or below. An increase of the kV from 70 to 75 had a minor influence. The energy imparted for the wider collimator was 0.6-0.8 and for the narrower collimator, 0.4-0.6 mJ.

• Research Organization: Univ. of Lund, Sweden
• OSTI ID: 5511509
• Journal Information: Oral Surg., Oral Med., Oral Pathol.; (United States), Journal Name: Oral Surg., Oral Med., Oral Pathol.; (United States) Vol. 59:2; ISSN OSOMA
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
655003* -- Medical Physics-- Dosimetry
ABSORPTION
BIOMEDICAL RADIOGRAPHY
BODY
DIAGNOSTIC TECHNIQUES
DIGESTIVE SYSTEM
DOSES
DOSIMETRY
ENDOCRINE GLANDS
ENERGY ABSORPTION
FILM DOSIMETRY
GLANDS
MEDICINE
MOCKUP
NUCLEAR MEDICINE
ORAL CAVITY
ORGANS
PHANTOMS
RADIATION DOSE DISTRIBUTIONS
RADIATION DOSES
RADIOLOGY
SALIVARY GLANDS
STRUCTURAL MODELS
THERMOLUMINESCENT DOSIMETRY
THYROID
TONGUE
X-RAY DOSIMETRY