Document Detail

Patient radiation exposure measurements during interventional procedures: a prospective study.
MedLine Citation:
PMID:  16775478     Owner:  NLM     Status:  MEDLINE    
This is a prospective study with the purpose of assessing patient radiation dose and stochastic risk (risk for fatal cancer) in a patient population undergoing interventional radiological (IR) procedures. Measurements were performed on 36 consecutive patients undergoing percutaneous transluminal angioplasty (PTA, n=18), transjugular intrahepatic portosystemic shunt (TIPS, n=3), diagnostic angiography (DA, n=6), arterial embolization (AE, n=3), and hepatic neoplasm chemoembolization (HCE, n=6). Kerma area product (KAP) was used as a measure of x-ray exposure to the patient. Mean KAP value per procedure was 79+/-50 Gy cm for PTA, 139+/-55 Gy cm for TIPS, 110+/-44 Gy cm for DA, 325+/-145 Gy cm for AE, and 150+/-76 Gy cm for HCE. Forty-six percent of total KAP value was attributed to fluoroscopy. In conclusion, we showed that a linear correlation between effective dose and KAP was found (r=0.84), which could be used for estimating patient effective dose using KAP measurements. Small changes to the number of digital frames acquired result in substantial change of the total KAP in interventional radiological procedures. Stochastic risk from IR procedures is quite low for the patient. Measuring KAP is a simple and accurate method, which provides the interventional radiologist with a good estimation of the patient's relative risk for stochastic effects.
Efstathios P Efstathopoulos; Elias N Brountzos; Efthimia Alexopoulou; Stylianos Argentos; Dimitrios A Kelekis; Panagiota D Raptou; Nikolaos L Kelekis
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Health physics     Volume:  91     ISSN:  0017-9078     ISO Abbreviation:  Health Phys     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-06-15     Completed Date:  2006-07-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985093R     Medline TA:  Health Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  36-40     Citation Subset:  IM    
2nd Department of Radiology, University of Athens, General University Hospital "Attikon," Rimini 1, 12462, Athens, Greece.
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MeSH Terms
Environmental Exposure / statistics & numerical data*
Greece / epidemiology
Neoplasms, Radiation-Induced / mortality*
Prospective Studies
Radiation Dosage
Radiation Injuries / mortality*
Radiation Protection / methods
Radiography / statistics & numerical data*
Risk Assessment / methods*
Surgery, Computer-Assisted / statistics & numerical data*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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