Safety Margin Assessment After Radiofrequency Ablation of the Liver Using Registration of Preprocedure and Postprocedure CT Images
作者： Kyung Won Kim , Jeong Min Lee , Ernst Klotz , Soo Jin Kim , Se Hyung Kim
DOI: 10.2214/AJR.10.5122
关键词: Safety margin 、 Retrospective review 、 Radiology 、 Prototype software 、 Medicine 、 Mean difference 、 X ray computed 、 Treatment outcome 、 Radiofrequency ablation 、 Tomography
摘要: OBJECTIVE. The purpose of our study was to evaluate a new technique for registration postprocedure preprocedure CT images determine the effect on safety margin assessment after radiofrequency ablation (RFA).MATERIALS AND METHODS. Registration post-RFA pre-RFA performed using prototype software via nonrigid in 31 patients with hepato-cellular carcinoma who were treated RFA. accuracy validated by setting pairs corresponding landmarks registered and calculating mean difference between landmarks. Three radiologists independently conducted retrospective review without images. rated 4-point scale (1, residual tumor; 2, < 2 mm margin; 3, 5 4, ≥ margin). Interobserver agreement evaluated weighted kappa...
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