Download PDF
CC BY-NC-ND 4.0 · Indian J Radiol Imaging 2012; 22(04): 251-253
DOI: 10.4103/0971-3026.111470
ORIGINAL ARTICLE

Fusion of intravenous contrast-enhanced C-arm CT and pretreatment imaging for ablation margin assessment of liver tumors: A preliminary study

Jin Iwazawa
Department of Radiology, Nissay Hospital, Itachibori, Nishiku, Osaka
,
Naoko Hashimoto
Department of Radiology, Nissay Hospital, Itachibori, Nishiku, Osaka
,
Takashi Mitani
Department of Radiology, Nissay Hospital, Itachibori, Nishiku, Osaka
,
Shoichi Ohue
Department of Radiology, Komatsu Hospital, Kawakatsucho, Neyagawa
› Author Affiliations Source of Support: Nill.
› Further Information
  PDF Download Permissions and Reprints

Abstract

The aim of this preliminary study was to evaluate the feasibility of assessing ablation margins after radiofrequency ablation (RFA) of liver tumors from fusion images of post-treatment C-arm computed tomography (CT) images fused to pretreatment images. Five patients with liver tumors underwent RFA. Intravenous contrast-enhanced C-arm CT images were obtained for all patients immediately after RFA, and multi-detector CT (MDCT) images were obtained 3-7 days later. The C-arm CT and MDCT images were fused to pretreatment images using a multimodality image fusion software. The minimum ablation margins were assessed in the C-arm CT and MDCT fusion images. Ablation margins after RFA of liver tumors can be measured using intravenous contrast-enhanced C-arm CT images fused with pretreatment images. This technique has the potential for use in the intra-procedural assessment of liver tumor ablation.

Keywords

Cone-beam CT - multimodality fusion - radiofrequency ablation - safety margin


Publication History

Article published online:
04 October 2021

© 2012. Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

Thieme Medical and Scientific Publishers Private Ltd.
A-12, Second Floor, Sector -2, NOIDA -201301, India

 

  • References

  • 1 Kim KW, Lee JM, Klotz E, Kim SJ, Kim SH, Kim JY, et al. Safety margin assessment after radiofrequency ablation of the liver using registration of preprocedure and postprocedure CT images. AJR Am J Roentgenol 2011;196:W565-72.
  • 2 Wallace MJ, Kuo MD, Glaiberman C, Binkert CA, Orth RC, Soulez G. Three-dimensional C-arm cone-beam CT: Applications in the interventional suite. J Vasc Interv Radiol 2008;19:799-813.
  • 3 Orth RC, Wallace MJ, Kuo MD. C-arm cone-beam CT: General principles and technical considerations for use in interventional radiology. J Vasc Interv Radiol 2008;19:814-20.
  • 4 Iwazawa J, Ohue S, Hashimoto N, Mitani T. Ablation margin assessment of liver tumors with intravenous contrast-enhanced C-arm computed tomography. World J Radiol 2012;4:109-14.
  • 5 Mori K, Fukuda K, Asaoka H, Ueda T, Kunimatsu A, Okamoto Y, et al. Radiofrequency ablation of the liver: Determination of ablative margin at MR imaging with impaired clearance of ferucarbotran-feasibility study. Radiology 2009;251:557-65.