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Radiation Protection Dosimetry Advance Access originally published online on June 18, 2006
Radiation Protection Dosimetry 2007 123(1):113-117; doi:10.1093/rpd/ncl073
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

SCIENTIFIC NOTES

Patient dose during radiological examination in the follow-up of bariatric surgery

Luca Moro1,*, Claudio Cazzani2, Orazio Tomarchio2, Giovanni Morone3, Antonio Catona3 and Daniele Fantinato1

1 Department of Medical Physics, Salvatore Maugeri Foundation, IRCCS, Scientific Institute of Pavia, via Ferrata 8, 27100 Pavia, Italy
2 Department of Radiology, Salvatore Maugeri Foundation, IRCCS, Scientific Institute of Pavia, via Ferrata 8, 27100 Pavia, Italy
3 Department of Mini-invasive Surgery, Salvatore Maugeri Foundation, IRCCS, Scientific Institute of Pavia, via Ferrata 8, 27100 Pavia, Italy

*Corresponding author: lmoro{at}fsm.it

Received November 29, 2005, amended March 10, 2006, accepted May 7, 2006


  Abstract

A patient dose survey was carried out measuring the kerma-area product (KAP) values during radiological evaluation in the follow-up of bariatric surgery. The procedures were performed by three radiologists to adjust laparoscopic gastric bands and to detect postoperative complications after Roux-en-Y gastric bypass procedures to treat morbid obesity. Total fluoroscopy time, exposure factors and the overall contribution of fluoroscopy to the accumulated KAP value were recorded. The median KAP values were used to estimate organ doses and effective dose to a standard patient; the radiation risk associated with the procedures was also evaluated. The doses were smaller for one of the three radiologists, owing to a more appropriate beam collimation and a reduction of the screening time. The KAP values ranged from 1.6 to 7.1 Gy cm2 for the laparoscopic adjustable gastric banding management, and from 3.0 and 8.3 Gy cm2 for the radiological examinations after gastric bypass. As a whole, the effective doses associated to these procedures were between 0.5 and 2.7 mSv. The organs receiving the highest doses were not only breast, stomach, pancreas and liver, but also lungs, owing to of their high radiosensitivity, significantly contributed to the effective dose.


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