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Updated: May 19, 2026

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Operator-controlled imaging significantly reduces radiation exposure during EVAR.

G Peach¹, S Sinha, S A Black

¹St George's Vascular Institute, 4th Floor, St James Wing, St George's Healthcare NHS Trust, Blackshaw Road, London SW17 0QT, UK. gpeach@doctors.org.uk

European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery

|August 28, 2012

Summary

Operator-controlled imaging (OCI) significantly reduces radiation exposure during endovascular aneurysm repair (EVAR). This change also decreased screening times, making EVAR safer for patients and interventionalists.

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Area of Science:

Vascular Surgery
Interventional Radiology
Medical Imaging

Background:

Endovascular aneurysm repair (EVAR) for abdominal aortic aneurysms (AAA) reduces short-term risks.
EVAR procedures can involve significant radiation exposure for patients and staff.
Optimizing imaging techniques is crucial for enhancing EVAR safety.

Purpose of the Study:

To evaluate the impact of transitioning from radiographer-controlled to operator-controlled imaging (OCI) on radiation exposure during EVAR.
To assess changes in screening time and contrast dose following the implementation of OCI.

Main Methods:

Retrospective analysis of 122 elective EVAR procedures for infra-renal AAA.
Data collected included dose area product (DAP), screening time, contrast volume, and operative duration.
Comparison of outcomes before and after the implementation of OCI.

Main Results:

Median DAP was significantly lower after OCI implementation (4.9 mGy m² vs. 6.9 mGy m²; p = 0.005).
Median screening times decreased from 20.0 min to 16.2 min (p = 0.027).
No significant difference was observed in median contrast volumes (100 ml vs. 90 ml; p = 0.21).

Conclusions:

Operator-controlled imaging significantly reduces radiation exposure during EVAR.
OCI implementation leads to shorter screening times.
OCI is effective in reducing high-dose radiation cases in EVAR procedures.