Radiation Exposure During Transarterial Chemoembolization: Angio-CT Versus Cone-Beam CT - Université de Montpellier Accéder directement au contenu
Article Dans Une Revue CardioVascular and Interventional Radiology Année : 2019

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

Joël Greffier

Résumé

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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Dates et versions

hal-02634959 , version 1 (27-05-2020)

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Citer

Lauranne Piron, Julien Le Roy, Christophe Cassinotto, Julien Delicque, Ali Belgour, et al.. Radiation Exposure During Transarterial Chemoembolization: Angio-CT Versus Cone-Beam CT. CardioVascular and Interventional Radiology, 2019, 42 (11), pp.1609-1618. ⟨10.1007/s00270-019-02269-8⟩. ⟨hal-02634959⟩
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