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Document Type |
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Article In Journal |
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Document Title |
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Assessment of Radiation Dose to Eyes Lens from CT of the Head and Trunk تقييم الجرعة الإشعاعية لأجزاء من الجسم في الفحوصات القياسية عند استخدام جهاز التصوير الإشعاعي المقطعي للجذع والرأس |
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Subject |
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Original Articles |
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Document Language |
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English |
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Abstract |
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Radiation exposure of the patient during Computerized Axial Tomography
examinations is known to be relatively high. Limited knowledge is
available on doses received indirectly by organs, during diagnostic procedures.
In the present study, the radiation dose to the lens of the eyes was measured
from various Computerized Axial Tomography protocols for head and trunk
imaging. Thermoluminescence dosimeters were used to measure organ doses
in an anthropomorphic Rando Alderson phantom. The unwanted (non-useful)
radiation doses delivered to the eye lens during Computerized Axial Tomography
examination of head, facial bone, orbits, abdomen, chest, pelvis,
neck, nasopharynx, cervical spine, lumbar spine, and sacroiliac joint were assessed.
The following results are obtained: head scans, mean value 8.74 mGy;
facial bone scans, mean value 8.03 mGy; orbital scans, mean value 61.51
mGy; abdomen scans, mean value 0.76 mGy; chest scans, mean value1.03
mGy; pelvis scans, mean value 0.46 mGy; neck scans, mean value 1.81 mGy;
nasopharynx scans, mean value 8.56 mGy; cervical spine scans, mean value
6.15 mGy; lumber spine scans, mean value 0.46 mGy; and sacroiliac joint
scans, mean value 0.35 mGy. The doses received by the eye lens from Computerized
Axial Tomography examinations and general rediogaphy examinations
are compared. It is observed that relatively high doses of unwanted radiations
are delivered to the eye lens from Computerized Axial Tomography
examinations. |
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ISSN |
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1319-1004 |
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Journal Name |
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Medical Science Journal |
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Volume |
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11 |
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Issue Number |
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1 |
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Publishing Year |
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1423-1424 AH
2003-2004 AD |
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Number Of Pages |
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10 |
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Article Type |
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Article |
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Added Date |
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Sunday, October 11, 2009 |
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