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CardioVascular and Interventional Radiology
Published in: CardioVascular and Interventional Radiology 11/2019

01-11-2019 | Computed Tomography | Clinical Investigation

Radiation Exposure During Transarterial Chemoembolization: Angio-CT Versus Cone-Beam CT

Authors: Lauranne Piron, Julien Le Roy, Christophe Cassinotto, Julien Delicque, Ali Belgour, Carole Allimant, Jean-Paul Beregi, Joel Greffier, Nicolas Molinari, Boris Guiu

Published in: CardioVascular and Interventional Radiology | Issue 11/2019

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Abstract

Introduction

Cone-beam computed tomography (CBCT) has been developed to improve reliability of many interventional radiology (IR) procedures performed with Angio system, such as transarterial chemoembolization (TACE). Angio-CT has emerged as a new imaging technology that combines a CT scanner with an Angio system in the same IR suite. The purpose of our study was to compare Angio system with CBCT capability and Angio-CT in terms of patient radiation exposure during TACE procedures.

Materials and Methods

Consecutive TACE procedures performed between January 2016 and September 2017 with the two imaging modalities (Artis Zeego defining the CBCT group and Infinix-i 4D-CT defining the Angio-CT group) were reviewed. TACE and patient’s characteristics and patient radiation exposure parameters were collected. Dose-area products (DAP) and dose-length products (DLP) were converted into effective doses (ED) using conversion factors. Accuracy of tumor targeting and response was retrospectively assessed.

Results

A total of 114 TACE procedures in 96 patients were included with 57 procedures in each group. The total ED in the Angio-CT group was 2.5 times lower than that in the CBCT group (median 15.4 vs. 39.2 mSv, p < 0.001). Both 2D ED and 3D ED were lower in the Angio-CT group than in the CBCT group (5.1 vs. 20 mSv, p < 0.001, and 7.4 vs. 17.9 mSv, p < 0.001, respectively). There was no significant difference neither in terms of classes of tumor targeting (p = 0.509) nor in terms of classes of tumor response (p = 0.070) between both groups.

Conclusion

Angio-CT provides significant decrease in patient effective dose during TACE procedures compared to Angio system with CBCT.
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Metadata
Title
Radiation Exposure During Transarterial Chemoembolization: Angio-CT Versus Cone-Beam CT
Authors
Lauranne Piron
Julien Le Roy
Christophe Cassinotto
Julien Delicque
Ali Belgour
Carole Allimant
Jean-Paul Beregi
Joel Greffier
Nicolas Molinari
Boris Guiu
Publication date
01-11-2019
Publisher
Springer US
Published in
CardioVascular and Interventional Radiology / Issue 11/2019
Print ISSN: 0174-1551
Electronic ISSN: 1432-086X
DOI
https://doi.org/10.1007/s00270-019-02269-8

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