Indian Journal of Radiology Indian Journal of Radiology  

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Year : 2012  |  Volume : 22  |  Issue : 4  |  Page : 251-253
Fusion of intravenous contrast-enhanced C-arm CT and pretreatment imaging for ablation margin assessment of liver tumors: A preliminary study

1 Department of Radiology, Nissay Hospital, Itachibori, Nishiku, Osaka, Japan
2 Department of Radiology, Komatsu Hospital, Kawakatsucho, Neyagawa, Japan

Correspondence Address:
Jin Iwazawa
Department of Radiology, Nissay Hospital, 6-3-8 Itachibori, Nishiku, Osaka 550-0012
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0971-3026.111470

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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.

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