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The Journal of Bone and Joint Surgery, Vol 65, Issue 1 5-12, Copyright © 1983 by Journal of Bone and Joint Surgery, Inc

JOURNAL CONTENTS

Reduction of radiation exposure during radiography for scoliosis

JE Gray, AD Hoffman and HA Peterson

To reduce the radiation exposure received by young scoliosis patients during treatment, six changes in technique were instituted: (1) a posteroanterior projection, (2) specially designed leaded acrylic filters, (3) a high-speed screen-film system, (4) a specially designed cassette-holder and grid, (5) a breast-shield, and (6) additional filtration in the x-ray tube the thyroid, breast, and abdominal areas were made on an Alderson phantom. They revealed an eightfold reduction in abdominal exposure for both the posteroanterior and the lateral radiographys. There was a twentyfold reduction in exposure to the thyroid for the posteroanterior radiography from 100 to less than five milliroentgens and for the lateral radiograph there was a 100-fold reduction from 618 to six milliroentgens. For the breasts there was a sixty-ninefold reduction from 344 to less than five milliroentgens for the posteroanterior radiography and a fifty-fivefold reduction from 277 to less than five milliroentgens for the lateral radiograph. These reductions in exposure were obtained without significant loss in the quality of the radiographs and in most instances with an improvement in the over-all quality of the radiograph due to the more uniform exposure.
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H. Geijer, K.-W. Beckman, B. Jonsson, T. Andersson, and J. Persliden
Digital Radiography of Scoliosis with a Scanning Method: Initial Evaluation
Radiology, February 1, 2001; 218(2): 402 - 410.
[Abstract] [Full Text]