Lauranne Piron1, Julien Le Roy2, Christophe Cassinotto3, Julien Delicque3, Ali Belgour3, Carole Allimant3, Jean-Paul Beregi4, Joel Greffier4, Nicolas Molinari5, Boris Guiu3,6. 1. Department of Radiology, St-Eloi Hospital, CHU Montpellier, University of Montpellier, 80 Avenue Augustin Fliche, 34295, Montpellier, France. l-piron@chu-montpellier.fr. 2. Department of Medical Physics, CHU Montpellier, Montpellier, France. 3. Department of Radiology, St-Eloi Hospital, CHU Montpellier, University of Montpellier, 80 Avenue Augustin Fliche, 34295, Montpellier, France. 4. Department of Radiology, CHU Nimes, University of Montpellier, Nimes, France. 5. IMAG, CNRS, University of Montpellier, CHU Montpellier, Montpellier, France. 6. INSERM U1194, Montpellier Cancer Research Institute, Montpellier, France.
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.
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.
Authors: Jonathan Fergus; Karan Nijhawan; Nicholas Feinberg; Mark Hieromnimon; Rakesh Navuluri; Steve Zangan; Brian S Funaki; Osman Ahmed Journal: Abdom Radiol (NY) Date: 2021-07-06
Authors: Fugang Chen; Yang Li; Hongyan Zhou; Chuang Sun; Sun Li; Lu Wang; Xin Li; Xiaoqiang Liu Journal: Biomed Res Int Date: 2021-04-09 Impact factor: 3.411