Optimization of a fluoroscope to reduce radiation exposure in pediatric imaging.

Abstract:

BACKGROUND:A new children's hospital provided the impetus to investigate radiation dose and image quality in a fluoroscope that was specially engineered for pediatric fluoroscopy. Radiation protection management recommends radiation exposures that are as low as reasonably achievable, while still maintaining diagnostic image quality. OBJECTIVES:To obtain comparative phantom imaging data on radiation exposure and image quality from a newly installed fluoroscope before and after optimization for pediatric imaging. MATERIALS AND METHODS:Images were acquired from various thickness phantoms, simulating differing patient sizes. The images were evaluated for visualization of high- and low-contrast objects and for radiation exposure. Effects due to use of the image intensifier anti-scatter grid were also investigated. RESULTS:The optimization of the new fluoroscope for pediatric operation reduced radiation exposure by about 50% (compared to the originally installed fluoroscope), with very little loss of image quality. Pulsed fluoroscopy was able to lower radiation dose to less than 10% of continuous fluoroscopy, while still maintaining acceptable phantom image quality. CONCLUSION:Radiation exposure in pediatric fluoroscopy can be reduced to values well below the exposure settings that are typically found on unoptimized fluoroscopes. Pulsed fluoroscopy is considered a requisite for optimal pediatric fluoroscopy.

journal_name

Pediatr Radiol

journal_title

Pediatric radiology

authors

Brown PH,Thomas RD,Silberberg PJ,Johnson LM

doi

10.1007/s002470050728

keywords:

subject

Has Abstract

pub_date

2000-04-01 00:00:00

pages

229-35

issue

4

eissn

0301-0449

issn

1432-1998

journal_volume

30

pub_type

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