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  • Title: [Estimation of effective dose from CT examination].
    Author: Nishizawa K, Maruyama T, Takayama M, Iwai K, Furuya Y.
    Journal: Nihon Igaku Hoshasen Gakkai Zasshi; 1995 Sep; 55(11):763-8. PubMed ID: 8532509.
    Abstract:
    Tissue or organ doses related to radiological risk were determined for four different types of CT scanners with a spiral scan function. Dose measurements were performed using a Rando phantom and two types of thermoluminescent dosimeters. The effective doses recommended by the International Commission on Radiological Protection in 1990 were evaluated using the tissue or organ doses determined with the phantom measurement. The resultant effective dose per CT examination ranged from 4.6 to 10.8 mSv for chest examination and from 6.7 to 13.3 mSv for upper abdominal examination. It should be noted that the effective dose from CT examination will be increased by increasing in the frequency of CT examinations and technical development of CT scanners.
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