Document Detail

Determinants of radiation exposure during EVAR.
MedLine Citation:
PMID:  20561802     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: Endovascular aneurysm repair (EVAR) is an established method of aortic aneurysm repair, in favourable anatomical configurations. It does however expose patients to radiation. The study aim was to determine if the aneurysm neck morphology influenced radiation exposure. PATIENTS AND METHODS: All elective and emergency EVAR patients were identified. Elective patients had a bifurcated stent-graft deployed, while emergency patients were repaired with an aorto-uni-iliac stent-graft and fem-fem crossover bypass. Proximal and distal aortic neck diameters, neck length, neck angles and sac diameter were recorded, with the radiation dose, screening time and contrast volume. The two subgroups of elective and emergency patients were compared and correlation between anatomical and radiological parameters calculated by using Pearson's correlation coefficient. RESULTS: 320 (270 male) elective patients and 64 (55 male) emergency patients from October 1998 to October 2008 underwent EVAR. The mean proximal (p = 0.004) and distal (p = 0.01) neck diameters were smaller and mean sac diameter (p < 0.0001) was greater in emergencies. No difference between groups existed in the neck length (p = 0.36) and suprarenal diameter (p = 0.30), sagittal (p = 0.05) and coronal (p = 0.62) neck angles. The screening time (p = 0.053) and contrast volume (p = 0.04) were lower, with a slightly higher radiation dose (p = 0.12) in emergencies. There was no definite correlation between the seven anatomical and three radiological parameters. CONCLUSION: While radiation exposure is different in emergency patients, this is thought due to surgical technique rather than the aneurysm neck morphology.
S A Badger; C Jones; C S Boyd; C V Soong
Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2010-06-18
Journal Detail:
Title:  European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery     Volume:  40     ISSN:  1532-2165     ISO Abbreviation:  Eur J Vasc Endovasc Surg     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-08-30     Completed Date:  2010-09-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9512728     Medline TA:  Eur J Vasc Endovasc Surg     Country:  England    
Other Details:
Languages:  eng     Pagination:  320-5     Citation Subset:  IM    
Copyright Information:
Copyright 2010 European Society for Vascular Surgery. Published by Elsevier Ltd. All rights reserved.
Vascular and Endovascular Surgery Unit, Belfast City Hospital, Lisburn Road, Belfast BT9 7AB, UK.
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MeSH Terms
Aortic Aneurysm / radiography*,  surgery*
Aortic Rupture / radiography*,  surgery*
Aortography / adverse effects
Blood Vessel Prosthesis
Blood Vessel Prosthesis Implantation* / instrumentation
Contrast Media / diagnostic use
Middle Aged
Northern Ireland
Radiation Dosage*
Radiography, Interventional / adverse effects*
Risk Assessment
Surgical Procedures, Elective
Time Factors
Tomography, X-Ray Computed / adverse effects*
Treatment Outcome
Reg. No./Substance:
0/Contrast Media

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