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. 2013 Nov;55(11):1365-72.
doi: 10.1007/s00234-013-1276-0. Epub 2013 Sep 5.

Radiation dose in neuroangiography using image noise reduction technology: a population study based on 614 patients

Michael Söderman  1 , Maria Mauti, Sjirk Boon, Artur Omar, María Marteinsdóttir, Tommy Andersson, Staffan Holmin, Bart Hoornaert
Affiliations

Radiation dose in neuroangiography using image noise reduction technology: a population study based on 614 patients

Michael Söderman et al. Neuroradiology. 2013 Nov.

Abstract

Introduction: The purpose of this study was to quantify the reduction in patient radiation dose by X-ray imaging technology using image noise reduction and system settings for neuroangiography and to assess its impact on the working habits of the physician.

Methods: Radiation dose data from 190 neuroangiographies and 112 interventional neuroprocedures performed with state-of-the-art image processing and reference system settings were collected for the period January-June 2010. The system was then configured with extra image noise reduction algorithms and system settings, which enabled radiation dose reduction without loss of image quality. Radiation dose data from 174 neuroangiographies and 138 interventional neuroprocedures were collected for the period January-June 2012. Procedures were classified as diagnostic or interventional. Patient radiation exposure was quantified using cumulative dose area product and cumulative air kerma. Impact on working habits of the physician was quantified using fluoroscopy time and number of digital subtraction angiography (DSA) images.

Results: The optimized system settings provided significant reduction in dose indicators versus reference system settings (p<0.001): from 124 to 47 Gy cm(2) and from 0.78 to 0.27 Gy for neuroangiography, and from 328 to 109 Gy cm(2) and from 2.71 to 0.89 Gy for interventional neuroradiology. Differences were not significant between the two systems with regard to fluoroscopy time or number of DSA images.

Conclusion: X-ray imaging technology using an image noise reduction algorithm and system settings provided approximately 60% radiation dose reduction in neuroangiography and interventional neuroradiology, without affecting the working habits of the physician.

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Figures

Fig. 1
Fig. 1
Distribution of DAP values for diagnostic procedures. Dashed lines represent third quartile (Q3). For graph layout purposes, the x-axis is limited to 410 Gy cm2, with 5% of the procedures for the reference system not being displayed on the scale (max value is 2,997 Gy cm2)
Fig. 2
Fig. 2
Distribution of DAP values for interventional procedures. Dashed lines represent third quartile. For graph layout purposes, the x-axis is limited to 900 Gy cm2, with 5% of the procedures for the reference system not being displayed on the scale (max value is 1,114 Gy cm2)
See this image and copyright information in PMC

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