Electromagnetic tracking for US-guided interventions: standardized assessment of a new compact field generator
Electromagnetic tracking for US-guided interventions: standardized assessment of a new compact field generator
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美国引导干预的电磁跟踪：新型紧凑型场发生器的标准化评估
DOI：
10.1007/s11548-012-0740-3
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发表时间：
2012
影响因子：
3
通讯作者：
Maier-Hein L
中科院分区：
文献类型：
--
作者：
Franz M;März K;Hummel J;Birkfellner W;Bendl R;Delorme S;Schlemmer HP;Meinzer H-P;Maier-Hein L
目的：在临床环境中，与电磁跟踪相关的主要挑战之一是磁场发生器（FG）的放置，以优化传感器定位的可靠性和准确性。最近，一种用于NDI Aurora®跟踪系统的新型移动FG已经提出。这种紧凑型FG是第一个可以直接连接到超声（US）探头的FG。本研究的目的是评估在附近安装US探针的情况下compact f6的精度和准确性。材料和方法通过定制设计的安装适配器将六个不同的美国探头安装到紧凑型fgg上。为了评估compact FG的精密度和准确性，我们采用了标准化的评估方案。利用特制的钢板，我们测量了距离FG的三个水平的位置数据以及旋转数据。结果一些探针对跟踪精度的影响可以忽略不计，但两个探针的平均距离误差比参考测量的0.5 mm增加了1.5 mm。在所有情况下，抖动误差始终保持在0.2 mm以下。定位的平均相对误差小于3°。结论在大多数情况下，将美国探针附着在紧凑型fgg上对跟踪精度没有关键影响。这种有前途的移动FG的临床效益必须在未来的研究中显示。
PurposeOne of the main challenges related to electromagnetic tracking in the clinical setting is a placement of the field generator (FG) that optimizes the reliability and accuracy of sensor localization. Recently, a new mobile FG for the NDI Aurora®tracking system has been presented. ThisCompact FGis the first FG that can be attached directly to an ultrasound (US) probe. The purpose of this study was to assess the precision and accuracy of theCompact FGin the presence of nearby mounted US probes.Materials and methodsSix different US probes were mounted onto theCompact FGby means of a custom-designed mounting adapter. To assess precision and accuracy of theCompact FG, we employed a standardized assessment protocol. Utilizing a specifically manufactured plate, we measured positional data on three levels of distances from the FG as well as rotational data.ResultsWhile some probes had negligible influence on tracking accuracy two probes increased the mean distance error up to 1.5 mm compared with a reference measurement of 0.5 mm. The jitter error consistently stayed below 0.2 mm in all cases. The mean relative error in orientation was found to be smaller than 3°.ConclusionAttachment of an US probe to theCompact FGdoes not have a critical influence on tracking accuracy in most cases. Clinical benefit of this promising mobile FG must be shown in future studies.
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DOI：
--
发表时间：
2003
期刊：
影响因子：
--
作者：
M. Birth;P. Iblher;P. Hildebrand;J. Nolde;H. Bruch
通讯作者：
H. Bruch
影响因子：
2.9
作者：
Hastenteufel, Mark;Vetter, Marcus;Wolf, Ivo
通讯作者：
Wolf, Ivo
影响因子：
3.8
作者：
Maier-Hein, L.;Franz, A. M.;Meinzer, H. -P.
通讯作者：
Meinzer, H. -P.
超声波自校准
DOI：
--
发表时间：
2006
期刊：
SPIE Medical Imaging
影响因子：
--
作者：
E. Boctor;I. Iordachita;G. Fichtinger;Gregory Hager
通讯作者：
Gregory Hager