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Radiology, Vol 178, 647-651, Copyright © 1991 by Radiological Society of North America

ARTICLES

Dose reduction during fluoroscopic placement of feeding tubes

S Rudin, DR Bednarek and JA Miller
Department of Radiology, School of Medicine and Biomedical Sciences, State University of New York, Buffalo 14215.

By both increasing the optical iris of the video camera and removing the grid in fluoroscopic procedures involved in placement of a Dubbhoff feeding tube, the radiation dose to patients and staff was reduced by five to seven times. An average expected dose to a patient of about 300 mGy per procedure was reduced by two to three times when the grid was removed and by an additional three times when an iris of increased diameter was used. Because Dobbhoff procedures do not involve obtaining a diagnosis, the image degradation was acceptable and did not affect the total exposure times or ability to conduct the procedure. With the grid out, the difference between the mean exposure times of 5.1 minutes in 96 patient studies done with a normal iris opening and 4.0 minutes in 52 studies done with an enlarged iris was not statistically significant. The importance of reducing patient dose is reinforced by the finding that one-third of the patients underwent repeated procedures, accounting for almost 60% of the total.


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T. Xu, H. Q. Le, and S. Molloi
Patient-specific Region-of-Interest Fluoroscopy Device for X-ray Dose Reduction
Radiology, February 1, 2003; 226(2): 585 - 592.
[Abstract] [Full Text] [PDF]


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