Abstract Aims The magnetic technique using a magnetic tracer and handheld magnetometer was successfully evaluated in breast surgery. Residual tracer at the injection site can cause susceptibility artefacts on breast magnetic resonance imaging (MRI), therefore for lesion localization a solid marker would be preferable. Four magnetic markers were developed for localization to evaluate its clinical applicability. Methods Comparison was made of the maximum magnetic counts and artefact-volume on MRI. Results All markers were successfully detected, the spring marker showed the highest mean magnetic counts (627.8 ± 400.2, mean ± SD) with unequal variances ( p 3 ) with a significant difference between markers ( p = .049). Conclusion Localization using a magnetic marker is feasible and further evaluation is required within a clinical trial.

中文翻译：

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在离体猪模型中评估磁性标记的可行性研究

摘要 目的使用磁力示踪剂和手持式磁力计的磁技术在乳房手术中得到成功评估。注射部位残留的示踪剂会导致乳房磁共振成像 (MRI) 的磁敏感伪影，因此对于病变定位，最好使用固体标记物。开发了四种磁性标记用于定位以评估其临床适用性。方法比较MRI上的最大磁计数和伪影体积。结果所有标记均成功检测到，弹簧标记显示最高平均磁计数（627.8±400.2，平均值±SD），具有不等方差（p 3），标记之间存在显着差异（p = .049）。结论 使用磁性标记进行定位是可行的，需要在临床试验中进一步评估。