Graduate Thesis Or Dissertation
 

Measurement of gastro-intestinal and gonadal exposures in routine upper gastro-intestinal examinations using a conventional and an image intensifier fluoroscope

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/j9602383h

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  • This study modified certain existing techniques used in the determination of the radiation exposure to various anatomical structures of the gastro-intestinal tract during fluoroscopic examinations. Monitoring films were attached directly to the patient during the routine upper gastro-intestinal examination, instead of placing the films on the panel of the fluoroscope. The variations in exposure at 34 different locations along the gastro-intestinal tract were monitored for 30 examinations performed by three different radiologists. The results showed a definite decrease in exposure when the image intensifier fluoroscope was used instead of the conventional type. A variation in the exposure to the patient was noted between the different radiologists examining the patients. Data are also presented for gonadal exposure. A 2:1 reduction in exposure was observed when the examination was performed with the image intensifier unit as compared to the conventional type. The technique can be adapted for use in other studies concerned with measuring the exposure to the human trunk in diagnostic x-ray examinations.
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